Physics Homework Questions & Answers Archive

At least one of the answers above is NOT correct. Consider the function f(x, y)=x^2 y+y^3-48 y f has some other critical point v at (0,-4). f has ? at (-4 sqrt(3), 0) f has ? at (4 sqrt(3), 0) f has ? at (0,0) f has ? at (0,4)

Identify the form of business that is considered a separate legal entity. Multiple Choice a sole proprietorship a corporation a limited liability partnership a partnership

19. What is the mass for the car above? a) 2760 kg b) 9800 kg c) 918 kg d) 9000 kg 20. What is the net force? a) 1380 N right b) 918 N right c) 2760 N right d) 0 N 21. A rightward force of 302 N is applied to a 28.6-kg crate to accelerate it across the floor. The coefficient of friction between the crate and the floor is 0.750. Determine the acceleration of the crate. a) a=7.3 m / s^2 b) a =10.5 m / s^2 c) a=6.4 m / s^2 d) a=3.2 m / s^2 22. Suppose that a cart is accelerating at a rate of 3 m / s^2. If the net force is halved and the mass is tripled, then what is the new acceleration of the cart? a) 3 m / s^2 b) 0.5 m / s^2 c) 4.5 m / s^2 d) 2 m / s^2

Question (1 point) Data from the reaction below is shown in a graphical format. A -> 2 B Which four statements are true at 20 μs ? Choose one or more: The reaction is at equilibrium. The reaction is not at equilibrium. The forward reaction is faster than the reverse reaction. The forward reaction is slower than the reverse reaction. Reactant concentration is increasing. Reactant concentration is decreasing. Product concentration is increasing. Product concentration is decreasing. The concentration of the reactants and products is the same.

What is the sound intensity level of a rock concert with intensity of 0.7 W / m^2?

The sweptback triangular wings of an aircraft have the dimensions given in the figure shown to the right. Find the area of one wing in square feet. The area of one wing is approximately square feet.

83. Three pure inductance are connected are shown in Fig the equivalent reactance to replace this circuit is (a) 0.4 H (c) 1.2 H (b) 0.8 H (d) 1.6 H

Question 14 1 pts Most dietary fat is absorbed in the mucosal cells of what organ? Colon (large intestine) Small intestine Liver

An athlete holds a 7.5-kg shot put in his hand with his lower arm horizontal, as shown in the figure. His lower arm has a mass of 2.8 kg and its center of gravity (or center of mass) is 12 cm from the elbow-joint pivot. How much force must the extensor muscle (which is FM in the figure) in the upper arm exert on the lower arm? 1500 N 100 N 500 N 1000 N

Which equation is appropriate for determining the vertical ground reaction force during the stance phase of running? Fw=mg Fz=mg+a Fz=Fw Fz=m(az-g)

Find an equation of the line. Write the equation in the standard form. Through (5,8); parallel to 3x-y=6. (Use integers or fractions for any numbers in the equation. Simplify your answer.)

전류가 흐르는 매우 긴 도선이 직사각형 도선 옆에 그림과 같이 놓여있다. 직사각형 도선을 긴 도선에서 멀어지는 쪽으로 일정한 속도로 움직일 때, 직사각형 도선에 유도되 는 전류 방향과 기전력의 세기는? i 하나를 선택하세요. 1. 반시계방향, 기전력의 세기는 일정 2. 시계방향, 기전력의 세기는 일정 3. 시계방향, 기전력의 세기는 점점 감소 4. 반시계방향, 기전력의 세기는 점점 감소

Problem 6: (17% of Assignment Value) Even when the head is held erect, as shown in the figure, its center of mass is not directly over the principal point of support (the atlanto-occipital joint). The muscles at the back of the neck should therefore exert a force to keep the head erect. That is why your head falls forward when you fall asleep in class. Part (a) If the head has a weight of 49.9 N, calculate the force in units of newtons exerted by these muscles using the information in the figure. Part (b) What is the force in newtons exerted by the pivot on the head?

14. Frequent earthquakes in a given zone are evidence that 15. How do volcanoes help to identify the locations of plates boundaries? 16. A zone of active volcanoes that encircles the Pacific Ocean is known as the 17. In addition to volcanoes, what also frequently occurs in the Pacific Ring of Fire? 18. What do the characteristics of the Pacific Ring of Fire indicate? TYPES OF PLATE BOUNDARIES In the space provided, write the letter of the definition that best matches the term or phrase. 19. divergent a. boundary between tectonic plates that are 20. convergent sliding past each other horizontally 21. transform b. region where one plate moves under another 22. mid-ocean ridge c. boundary between tectonic plates that are moving away from each other 23. subduction zone d. undersea mountain range 24. fracture zone e. short segments of a mid-ocean ridge that are connected by transform boundaries f. the boundary between colliding tectonic plates

6.8 [32] 그림 4.6에 제시한 2-링크 머니퓰레이티의 동역학 방정식을 도출하라. 링크 1 의 관 성 텐서는 다음과 같다. C1 I= Ix x 1 0 0 0 Iy y 1 0 0 0 Iz z 1 링크 2 는 말단 효과 장치의 한 젘애 모든 질량 m2 가 있다고 가정하라. 중력은 아래 방향 (음의 Z1 방향)으로 작용한다.

Martino e Sandra vivono a 9,00 km di distanza l'uno dall'altra. Oggi devono incontrarsi in un punto a 3,00 km di distanza da casa di Martino e a 6,00 km da casa di Sandra. Martino decide di muoversi a piedi (v1=1,10 m / s) e parte da casa alle 12:00. Sandra preferisce andare in bici (v2=4,35 m / s) ed esce di casa alle 12:08, impiegando 120 s per raggiungere il luogo in cui ha lasciato la bicicletta. I due riusciranno a raggiungere il luogo dell'appuntamento contemporaneamente? Nel caso ciò non avvenga, quanto dovrà aspettare la persona che arriva per prima?

P-3-24 그림과 같은 구조물에서 직경이 20 mm 인 케이블 BC 의 허용응력이 150 MPa 이고 케이블 길이의 늘어남이 3 mm 이상 허용되지 않을 때 이 구조물이 지 지할 수 있는 하중 P 의 최대값을 구하라(케이블의 탄성계수는 Es=150 GPa 이다).

Problem 1: A 100 kg man is skiing across level ground at a speed of 8.0 m / s when he comes to the small slope 1.8 m higher than ground level shown in the following figure. (a) If the skier coasts up the hill, what is his speed when he reaches the top plateau? Assume friction between the snow and skis is negligible. (b) What is his speed when he reaches the upper level if an 80 N constant frictional force acts on the skis?

Find the length of side a.

If ABCD is dilated by a factor of 2, the coordinate of D' would be:

angle A F P angle K F P=1: 5

Si 3,00 m^3 de un gas, inicialmente a PTE, se coloca bajo una presión de 3,20 atm, la temperatura del gas se eleva a 38,0°C. ¿Cuál es el volumen?

Uma partícula de massa de repouso m0 se move ao longo do eixo x com velocidade u e colide com outra partícula de massa de repouso m0/3 que se move em direção a primeira com velocidade -u. Após a colisão, as partículas se unem. Determine a massa de repouso M0 do sistema após a colisão.

Complete the following proof: Given: EH→ bisects ∠DEG Prove: m∠1+m∠3=m∠HEF

Item II: Desarrolle los siguientes problemas: 1. Dada dos cargas de 2,00 µC, como se muestra en la Figura 1, y una carga de prueba positiva q=1,28 × 10^-18 C colocada en el origen. a) ¿Cuál es la fuerza neta ejercida por las dos cargas 2,00 µC sobre la carga de prueba q ? b) ¿Cuál es el campo eléctrico en el origen debido a las dos cargas de 2,00 µ ? c) ¿Cuál es el potencial eléctrico en el origen debido a las dos cargas de 2,00 µC ?

Flint, chert, and jasper are microcrystalline forms of - hematite (Fe2O3) - quartz (SiO2) - calcite (CaCO3) - halite (NaCl)

Work from a Constant Force In this problem, you will calculate the work done by a constant force. A force is considered constant if F(r) is independent of r. This is the most frequently encountered situation in elementary Newtonian mechanics. Consider a particle moving in a straight line from initial point B to final point A, acted upon by a constant force F (Figure 1). In the figure, the force is indicated by a series of identical vectors pointing to the left, parallel to the horizontal axis. The vectors are all identical to reflect the idea that the force is constant everywhere along the path. The magnitude of the force is F, and the displacement vector from point B to point A is L (of magnitude L, making an angle θ (radians) with the positive x axis). Find WBA, the work that the force F performs on the particle as it moves from point B to point A. Express the work in terms of L, F, and θ. Remember to use radians, not degrees, for any angles that appear in your answer.

A 60.8-kg skateboarder starts out with a speed of 2.49 m/s. He does 101 J of work on himself by pushing with his feet against the ground. In addition, friction does -246 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 9.34 m/s. (a) Calculate the change (PEf-PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give the absolute value.

Which enzyme is part of the electron transport chain in many aerobic bacteria? a) Catalase b) Cytochrome c oxidase c) Coagulase d) Urease

4 of 19 Part A Is there a distinction between thermal energy and internal energy? Which term do physicists prefer? Internal energy emphasizes heat flow, whereas thermal energy is the grand total of all energies outside a substance. Physicists prefer thermal energy. Thermal energy is outside a substance, whereas internal energy is inside. Physicists prefer internal energy. Thermal energy emphasizes heat flow, whereas internal energy is the grand total of all energies inside a substance. Physicists prefer internal energy. Thermal energy and internal energy are the same. Physicists prefer thermal energy. Submit Request Answer

Effects of ANP Atrial natriuretic peptide (ANP) increases GFR to decrease blood volume. True or False True False

Insulators are materials containing free electrons that allow current to flow through the material. True False

The graph of y=h(x) is shown. Draw the graph of y=h(2x)-4.

Assume that a population is growing initially at the specified rate. A value for (Pn) is given. Use the logistic growth model to compute the value of (Pn+1). Explain what this calculation means. rate = 3.5 % ; (P7=0.69) (P8 approx 0.6975) (Round to four decimal places as needed.) Explain what (P8) means. Select the correct answer below and fill in the answer box(es) to complete your choice. A. Because % of the capacity for growth already has been used up by the population, the future growth rate can be only % of what it was originally. B. The future growth rate can be only % of what it was originally.

Weights of golden retriever dogs are normally distributed. Samples of weights of golden retriever dogs, each of size n=15, are randomly collected and the sample means are found. Is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? Explain. Choose the correct answer below. A. Yes; the sample size must be over 30 for the sample means to be considered normally distributed. B. No; the original population is normally distributed, so the sample means will be normally distributed for any sample size. C. No; as long as more than 30 samples are collected the sample means will be normally distributed. D. No; the samples are collected randomly, so the sample means will be normally distributed for any sample size.

NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=-4.9 t^2+286 t+304 Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? The rocket splashes down after seconds. How high above sea-level does the rocket get at its peak? The rocket peaks at meters above sea-level.

The diagram below shows triangle ABD, with vector ABC , BE perpendicular to AD, and angle EBD congruent to angle CBD. If m angle ABE=52, what is m angle D?

Given the function f(x)=-4x-7+6e^x Determine the equation of the tangent line at the point (0,-1).

Which statement about the typical wavelength of orange light is true? It is longer than that of blue light and shorter than that of red light. It is shorter than that of blue light and longer than that of red light. It is longer than that of blue light and of red light. It is shorter than that of blue light and of red light.

Correct the set of the following linear inequality: y + 4 < -x Choose the type of boundary line: Solid (-) Dashed ( -- -) Enter two points on the boundary line: Select the region you wish to be shaded: A B

The algorithm the machine uses to create color Doppler displays is called: Group of answer choices autocorrelation fast Fourier transformation the range equation phase quadrature detectio

Use the slope formula to find the slope of the line passing through the points (-2.7,-4.8) and (5.2, ÷ 4.8).

Complete the two-column proof Given: overline E congruent to overline GH, overline EF congruent to overline HF, F is the midpoint of overline GI Prove: triangle EFI congruent to triangle HFG Statements Reasons 1) overline IE congruent to overline GH, overline EF congruent to overline HF

is the period required for the earth to make one journey around the sun; 365 1/4 days. Select one of four - Calendar Year - Elapsed Time - Solar Year - Military Time

A small lead ball, attached to a 1.00-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of three revolutions per second and is released on the upward part of the circular motion when it is 1.2 m above the ground. The ball travels straight upward. In the absence of air resistance, to what maximum height above the ground does the ball rise?

According to the Central Limit Theorem, if a sample size is at least sampled populations, we can conclude that the sample means are approximately normal. a. 25 b. 20 c. 30 d. 50 e. 100

For many purposes we can treat methane (CH4) as an ideal gas at temperatures above its boiling point of -161 °C. Suppose the temperature of a sample of methane gas is raised from -35.0°C to 1.0°C, and at the same time the pressure is decreased by 15.0% Does the volume of the sample increase, decrease, or stay the same? O increase If you said the volume increases or decreases, calculate the percentage change in the volume. Round your answer to the nearest percent. %

Solve the equation for the given variable: 4 x = -5 If your answer is a fraction, write it in fraction form and reduce it.

Solve: n/7=3 n=

Solve the system for all real number solutions. y = log4(x-12) - 3 y = -log4 x (x, y) = ( , )

While working on a kinematics problem, you derive an expression that has the following units: sqrt(m / ((m / s) / (m / s))^2) Is this expression unitless?

The overhead reach distances of adult females are normally distributed with a mean of 195 cm and a standard deviation of 8 cm . a. Find the probability that an individual distance is greater than 207.50 cm . b. Find the probability that the mean for 25 randomly selected distances is greater than 192.80 cm . c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30 ? a. The probability is 0.0591 . (Round to four decimal places as needed.) b. The probability is 0.9154 . (Round to four decimal places as needed.) c. Choose the correct answer below. A. The normal distribution can be used because the original population has a normal distribution. B. The normal distribution can be used because the mean is large. C. The normal distribution can be used because the probability is less than 0.5 D. The normal distribution can be used because the finite population correction factor is small.

A square 400 km on each side is embedded in an easterly flow that increases in magnitude toward the north as a rate of 8 m s^-1 per 100 km and southerly flow that increases toward the east at 3 m s^-1 per 200 km. What is the mean relative vorticity in the square? Show this using two methods, and do NOT use natural coordinates.

A robot begins at point C and travels in a straight line across a warehouse floor to point A where it picks up some merchandise. It then turns a 37.0° corner and travels 46.8 m to point B where it drops off the merchandise, as in the figure to the right. If the robot must now turn a 28.0° corner to return to its original position, how far must it travel to get there? Describe how to solve this problem. To determine the desired distance, use the given information to determine and then use the formula The robot must travel to travel to its original position. (Round to one decimal place as needed.)

The force F on the blade of a wind generator varies jointly as the blade area A and the square of the wind velocity v. Find the equation relating F, A, and v if F=19.6 lb when A=3.76 ft^2 and v=31.7 ft / s. Choose the correct answer below. A. 0.00519 A v^2 B. 0.005187 Av^2 C. 0.005 Av^2 D. 0.0052 Av^2

Why is the y-intercept set to zero when graphing mass versus volume for density determination? To ensure mass is constant Because no mass should correspond to no volume To correct experimental errors To simplify the equation

Two identical stones are dropped from the rest. Stone A from height h, and stone B from height 2h. If stone A takes time (t) to reach the ground, then what time is taken by stone B to reach the ground? a) 4t b) 2t c) √2t d) t / √2 e) t / 2

An adventurous archaeologist crosses between two rock cliffs by slowly going hand over hand along a rope stretched between the cliffs. He stops to rest at the middle of the rope. The rope will break if the tension in it exceeds 2.50 x 10^4 N. Our hero's mass is 70.0 kg. What is the smallest value the angle θ can have if the rope is not to break? Express your answer in degrees.

In the above figure, the radius of curvature is 10 ft and the height of the segment is 2 ft. What's the length of the chord? A. 7.5 ft B. 15 ft C. 10 ft D. 12 ft

Ohm's law is often written in the form I=E/R where I is the current in amperes (A), E is the voltage, and R is the resistance in ohms. What is the voltage necessary to push a 0.80 -A current through a resistance of 430 ohms?

직경이 40 mm 굽힘으로 발생하는 응력을 구하시오 - 단면이 원형이 경우 (Lz=ly, c=d / 2) σmax = sqrt(My^2+Mz^2) * (d/2) / (πd^4/64) = 32/πd^3 sqrt(My^2+Mz^2)

5. Expansion: 6. Compressibility: 7. Diffusion: 8. The container to the right contains 7 gas particles. Represent these same particles under the change of conditions below. 9. 1 slow

At which stage in the new product development process does the company have a number of ideas that it thinks might work and gets customers' feedback as to which ideas sound most promising?

What are the magnitude and normalized vector, hat(v) = vec(k) / vec(∇), of vec(v) = (1,2,2)?

Question 5 The peak wavelength that an object emits determines the color we perceive and is based on an object's - chemical compsition temperature reflective properties charge

Which would best be described as photography's most important contribution to Science? Griffiths editing processes Eastmen's Celluloid Film Photo Journalism Muybridge's Motion Studies

Question 3 of 50 When molecules absorb heat, there is an increase in A the kinetic energy of the molecules. B The potential energy of the molecules. C The mass of the molecules. D The bond energy of the molecules.

A group of students measure the mass and velocity of two cars before and after they collide. Which of the following will the students be able to demonstrate? The total momentum of the two cars will increase after the collision. The total momentum of the two cars will decrease after the collision. The momentum of each car will stay the same before and after the collision. The total momentum of the two cars will be the same before and after the collision.

Consider the following XCl4 ions: AsCl4^-, ICl4^-, ICl4^+, and AlCl4^-. Which of the ions will have an octahedral electron-domain geometry? Check all that apply. AsCl4^- ICl4^- ICl4^+ AlCl4^-

Question 3 2 pts A family is going to the movies and pulls out of their driveway. The movie theater is 80 km away and they make the drive in 0.8 hours. Which statement is most likely true? Their instantaneous velocity while pulling out of their driveway was 0 km/hr and their average velocity for their drive to the theater was 64 km/hr. Their instantaneous velocity while pulling out of their driveway was 2 km/hr and their average velocity for their drive to the theater was 64 km/hr. Their instantaneous velocity while pulling out of their driveway was 2 km/hr and their average velocity for their drive to the theater was 100 km/hr. Their instantaneous velocity while pulling out of their driveway was 0 km/hr and their average velocity for their drive to the theater was 100 km/hr.

Question 7 1 pt Find the determinant of the matrix. det[[-9, 0, 0, 0, 0], [7, -5, 0, 0, 0], [-3, 1, 9, 0, 0], [1, 8, -1, 1, 0], [4, -5, -4, 5, 7]] = Question 8 1 pt Find 3 × 3 lower triangular matrix with determinant -7.

Multiple Choice Question When an overly shortened or overly stretched muscle fiber is stimulated, what kind of contraction is generated? No contraction Tetany A weak contraction A strong contraction

Problem 6: (10% of Assignment Value) Consider the following three forces: - F1 = (301 N) i + (467 N) j - F2 = (-173 N) i - F3 = (-639 N) j - Part (a) What is the x component, in newtons, of the net force? Fsecx = 128.0 N ✓ Correct! - Part (b) v What is the y component, in newtons, of the net force? - Fsay = -172 - Fseay = -172.0 N ✓ Correct! - Part (c) What is the magnitude, in newtons, of the net force? - Fed = 128 + (-172) - Fset = -44.00 N X Incorrect! Give Up used. Part (d) What is the direction of the net force? Express your answer as the angle which is measured counterclockwise, in degrees, from the positive x axis. θ=

For the circuit of Figure 13.15, determine (Ztext in ) and (Aw-Vi n=10 mathrmmV), [ ID S s=12 mathrm~mA, VG S(text of )=-2.5 mathrm~V, VD D=26 mathrm~V, RG=510 mathrmk Omega, RD=1.2 mathrmk Omega, RL=25 mathrmk Omega . ]

En el contexto de la electromovilidad, ¿cuál de las siguientes afirmaciones sobre la Ley de Faraday es correcta? Hay dos alternativas correctas. Alternativas incorrectas decuentan un 15% del valor de la pregunta. (A) Un conductor que se mueve a través de un campo magnético uniforme experimenta una fuerza electromotriz (B) La fuerza electromotriz inducida es directamente proporcional a la tasa de cambio del flujo magnético a través de un circuito. (D) La Ley de Faraday explica cómo se genera electricidad a partir del movimiento en los generadores eléctricos. (E) La Ley de Faraday se aplica principalmente en sistemas de corriente alterna. Hay solo unas pocas aplicaciones en sistemas de corriente continua.

Consider a U-tube filled with mercury as shown in the figure. The diameter of the right arm of the U-tube is D=1.5 cm, and the diameter of the left arm is twice that. Heavy oil with a specific gravity of 2.660 is poured into the left arm, forcing some mercury from the left arm into the right one. Determine the maximum amount of oil that can be added into the left arm. (Round the final answer to three decimal places.)

Graph the linear equation. x=-6

Chapter 4 Homework Question 13, 4.1.35 HW Score: 28%, 42 of 150 points Part 1 of 2 Points: 0 of 2 Determine visually whether the graph is symmetric about the x-axis, the y-axis, or neither. If the graph represents a function, determine whether the function is even, odd, or neither. Is the graph symmetric about the x-axis, the y-axis, or neither? Select all that apply. A. The graph is symmetric about the y-axis. B. The graph is symmetric about the x-axis. C. The graph is symmetric about neither the x-axis nor the y-axis.

Hannah can paint a room in 16 hours. Destiny can paint the same room in 12 hours. How long does it take for both Hannah and Destiny to paint the room if they are working together.

Determine whether the improper integral ∫ from 1 to ∞ of 7/x^3 dx converges or diverges. If it converges, find its value. If it diverges, enter DNE. Integral: The value of the integral is:

Graphing Inequalities Graph the following inequality. Note: To graph the inequality: 1. Select the type of line below (solid or dashed). 2. Plot two points on the line. 3. Click on the side that should be shaded. y < 1/5 x + 2

4. A gas occupies 3.5 L at 1.0 atm . Find the volume of the gas when the pressure is 1140 mm Hg .

Consider the formula: K=A^3 B^5/10. Given that both A and B vary with respect to t; find dK/dt. (A) dK/dt=3 A^2 B^5/10 dA/dt+A^3 B^4/2 dB/dt B dK/dt=3 A^2 B^5/10 C dK/dt=3 A^2 B^4/2 dA/dt dB/dt D dK/dt=A^3 B^5/10 dA/dt+A^3 B^5/10 dB/dt E dK/dt=3 A^3 B^5/10 dA/dt+A^3 B^5/2 dB/dt

30 OF 30 QUESTIONS REMAINING A p-type semiconductor joined to an n-type semiconductor ... Pick those that apply. (A) Makes a diode B In a circuit allows electrons to flow from the n-type to the p-type material (C) Is a component of a transistor D In a circuit allows positive current (e.g. holes) to flow from the p-type to the n-type material.

If a gas at 30.12°C is at 0.86 atm and 2.3 L, what will be the temperature in Kelvin at 0.8 atm and 1.6 L? Provide answer to 2 decimal places. Do not include units.

Find the surface area of the sphere. Round your answer to the nearest hundredth. The surface area is about square meters.

2.02 mol N2O moles of oxygen =

Una particula parte del reposo en (xi=0) y se mueve durante 10 s con una aceleración de (+2.0 mathrm~cm / mathrms^2). Durante los siguientes (20 s), la aceleración de la partícula es (-1.0 mathrm~cm / mathrms^2). ¿Cuál es la posición de la particula al final de este movimiento? a. -1.0 m . b. cero. c. +2.0 m . d. +3.0 m . e. (-3.0 m)

Given sphereRadius, compute the volume of a sphere and assign spherevolume with the result using point division, instead of (4 / 3) which performs integer division. Volume of sphere =(4.0 / 3.0) π r^3 (Hint: r^3 can be computed using *. Use the constant MPI for the value of pi.)

The period in which the completed project is presented to the client for final adjustments is called Testing Select one: True False

Sarah and lygen are working on a physics lab together. They each take measurements of three different timed experiments. Sarah has an analog stopwatch and records experimental times of 7 1/9, 8 5/7, and 8 2/3 seconds. lygen has a digital stopwatch and records experimental times of 7.1, 8.6, and 8.3 seconds. Determine the average time for the experiments, to the nearest tenth.

Stopping distance REACTION Braking Hazard Braking begins According to brake.org.uk, the average reaction time for an alert, sober driver is approximately 0.67 seconds. The braking distance for a car traveling 30 miles per hour is 45 feet. This means that the car will travel 45 feet between when the driver presses the brake and when the car comes to a complete stop. Part 1: Determining the Reaction Distance A car is driving down a street at 30 mph when the driver spots a ball entering the street ahead of them. How far does the car travel before the driver presses the brake? Part 2: Total Stopping Distance Once the car has begun braking, it travels a further 45 feet. What is the car's total stopping distance from when the ball is seen to when the car finally comes to a complete stop?

In a ballistic pendulum an object of mass m is fired with an initial speed v0 at a pendulum bob. The bob has a mass M, which is suspended by a rod of length L and negligible mass. After the collision, the pendulum and object stick together and swing to a maximum angular displacement theta as shown (Figure 1). Part A Find an expression for v0, the initial speed of the fired object. Express your answer in terms of some or all of the variables m, M, L, and theta and the acceleration due to gravity, g.

Determine whether the improper integral ∫ from 1 to ∞ of x^(-3/2) dx converges or diverges. If it converges, find its value. If it diverges, enter DNE. Converges or Diverges: □ ∫ from 1 to ∞ of x^(-3/2) dx = □

Questão 2 Um cilindro encontra-se carregado com uma densidade volumétrica de carga igual a (3 r+r^3), dada em coordenadas cilíndricas. Encontre a carga encerrada no volume definido pela região E(r, θ, z) 0 ≤ r ≤ 1 ; 0 ≤ z ≤ 1 ; 0 ≤ θ ≤ 2 π Dado: dV = r dz dr dθ Anexo - Consulte a imagem em melhor resolução no final do cadernos de questöes. Assinale a alternativa correta.

Identify the transformations for the following transformed cos function that is reflected over the x axis: Period = Choose... Vertical Shift = Choose... Amplitude = Choose... Phase Shift = Choose...

As a comet leaves the inner Solar System, its ion tail points Choose one: A away from the Sun. B. forward along the orbit. C. toward the Sun D. back along the orbit.

How many times brighter is a 1st magnitude star than a 6th magnitude star?

QUESTIONS: 1. Why did the higher wattage lamp draw more current than the lower wattage lamp? Support your answer with your own lab data in tables I and II, and Ohm's Law formulas. 2. How would the current in the circuit be affected if the load were removed from the circuit (in other words, if you unscrewed the lamp from the lamp socket)? 3. Were there any differences between the resistance readings measured with the multimeter and the calculated resistance values? If so, explain why. 4. Why was the coil of ten turns of wire used in this experiment? 5. Are the calculated wattage values for the lamps the same as the wattage values indicated (printed) on the lamps? Yes? No? Explain your answer.

Two horizontal forces F1 and F2 act on a 4.00 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the positive x direction and has a magnitude of 7.70 N. Force F2 has a magnitude of 9.10 N. The figure here gives the x component vx of the velocity of the disk as a function of time t during the sliding. What is the angle between the constant directions of forces F1 and F2?

A ball weighing 15.2 N is tied to a string fixed to the ceiling. The string makes a 27.9° angle with the ceiling. Initially, the ball is held in place by a force that is perpendicular to the string. θ₁=27.9° Just after the ball is released and allowed to start swinging back and forth, what is the tangential acceleration of the ball? m / s²

Use the accompanying radiation levels (in W/kg) for 50 different cell phones. Find the percentile P25=□ W/kg (Type an integer or a decimal. Do not round.)

What are the two primary types of waves generated by earthquakes?

Object A has a mass m and a speed v, object B has a mass m / 2 and a speed 4 v, and object C has a mass 3 m and a speed v / 3. Rank the objects according to the magnitude of their momentum. Rank from smallest to largest. To rank items as equivalent, overlap them. Object C Object A Object B Smallest momentum Largest momentum

Find the image of the quadrilateral to the right in a 180° clockwise rotation about D. Choose the correct figure of the rotation below.

Discuss the validity of the following statement. If the statement is always true, explain why. If not, give a counterexample. If two normal distributions have the same mean and standard deviation, then they have the same shape. Choose the correct answer below. A. The statement is false because the normal distribution with a mean equal to -1 and a standard deviation equal to 2 can change shape based on the value of x. B. The statement is true because a normal distribution is completely defined by its mean and standard deviation. C. The statement is true because all normal distributions have the same shape. D. The statement is false because the normal distribution with a mean equal to 1 and a standard deviation equal to 2 can change shape based on the value of x.

Question 18, 2.7.43-BE Part 1 of 6 The price p (in dollars) and the demand x for a particular clock radio are related by the equation x=3000-10 p. (A) Express the price p in terms of the demand x, and find the domain of this function. (B) Find the revenue R(x) from the sale of x clock radios. What is the domain of R ? (C) Find the marginal revenue at a production level of 1600 clock radios. (D) Interpret R'(1900)=-80.00. (A) p=p(x)=

Heating a bearing increases the size of the bearing, allowing it to slip over a shaft.

What is the name of the category of polygons that has 8 sides. 1) Quadrilateral 2) octagon 3) heptagon 4) pentagon 5) hexagon 6) Triangle

Dos fuentes de sonido idénticas emiten ondas con la misma intensidad. Si ambas fuentes se activan simultáneamente, ¿qué afirmaciones son correctas de acuerdo a lo que será percibido? Hay dos alternativas correctas. Alternativas incorrectas decuentan un 15% del valor de la pregunta. (A) La intensidad se mantiene constante porque las fuentes son idénticas. (B) El nivel sonoro permanecerá igual porque las fuentes son idénticas. (C) El nivel sonoro aumentará sólo ligeramente.

Graph (y=64 x-x^3) using the following. a. the window ([-10,10]) by ([-10,10]) b. a window that shows 2 turning points b. Choose the correct graph of the function using a window that shows two turning points. A. B. C. D.

Find the horizontal vertical asymptotes of f(x). f(x) = 4x / (x+4)

One of the tallest self-supporting towers in the world is the Tokyo Sky Tree in Japan, which stands 2080 feet tall. Mendocino trees in California are among the tallest in the world. If 6 of these trees were stacked on top of each other, they would still be 64 feet shorter than the Tokyo Sky Tree in Japan. Solve the following equation to determine the height of the tree: 6x + 64 = 2080. Round your answer to the nearest tenth.

Experiment VIII - Energy and Momentum The apparatus consists of a box resting on the table and a pendulum. You will raise the pendulum a specified height H, and release it so it hits the box. You are to determine the distance D that the box will slide before coming to rest. In its initial position the box should just touch the pendulum bob when the bob is hanging straight down. Treat the pendulum bob as a point particle located at its geometrical center. In particular, use its center as the point of reference for position measurements of the bob. You may assume the collision between the bob and the box is completely inelastic (it isn't, but it's a reasonable approximation.) Make sure you use center-of-mass to center-of-mass, not to table-top, when measuring H. Activity 1 Run the experiment several times so you have a clear picture of what happens. Use only H=45 cm. The bob is soft and becomes flattened after each collision with the box. Reshape it into something more like a ball before each trial. Reject any runs in which you do not hit the box near the center or for which the box twists. P=Nav Activity 2 Separate what you observe into several "steps" occurring sequentially. Try to find steps that conserve mechanical energy, momentum or both. It's okay if there are steps that don't conserve either. For example, you can deal with non-conservation of energy by calculating the work done by the force responsible for non-conservation.

Used Truck Prices A truck dealership tracked recent sales of a particular model. The table shows the Excel output for the regression of Price (response variable, measured in 1000's) on Miles driven (predictor variable, measured in 1000's) Use the Excel output to answer the questions below. a) What is the correlation between Price and Miles? What does that tell you in this context? b) Give the regression equation Price = a + b (Miles) with the correct numerical values of a and b. c) Give careful interpretations of the slope and intercept of the regression equation. d) What average price is predicted for trucks with 50,000 miles? e) What is the residual for a truck that has been driven for 50,000 miles, that sells for 55,500? What does that tell you about the truck?

Calculate the force required to punch a circular hole, 65 mm in diameter in a steel plate 10 mm thick. The ultimate shear stress of the material is 200 MN / m^2.

Problem 3-1: A concrete cylinder having a diameter of 6.00 in. and gage length of 12 in. is tested in compression. The results of the test are reported in the table as load versus contraction. Draw the stress-strain diagram using scales of 1 in. =0.05 ksi and 1 in. =0.2(10^-3) in./in. . From the diagram, determine approximately the modulus of elasticity. Load (kip) Contraction (in.) 0 0 5.0 0.0006 9.5 0.0012 16.5 0.0020 20.5 0.0026 25.5 0.0034 30.0 0.0040 34.5 0.0045 38.5 0.0050 46.5 0.0062 50.0 0.0070 53.0 0.0075

Determine whether the Mean Value Theorem can be applied to (f) on the closed interval ([a, b]). (Select all that apply.) (f(x)=6-x, quad[3,7]) Yes, the Mean Value Theorem can be applied. No, because (f) is not continuous on the closed interval ([a, b]). No, because (f) is not differentiable in the open interval ((a, b)). None of the above. If the Mean Value Theorem can be applied, find all values of (c) in the open interval ((a, b)) such that (f'(c)=fracf(b)-f(a)b-a). (Enter your answers as a comma-separated list. If the Mean Value Theorem cannot be applied, enter NA.) (c=)

Which one of the following is an example of physical maturation? Gaining weight from age two to age three Losing weight due to exercise Losing weight during a brief illness Learning which foods produce the most weight

A spinner with 10 equally sized slices has 5 yellow slices, 3 red slices, and 2 blue slices. Maya spun the dial 40 times and got the following results. Outcome Yellow Red Blue Number of Spins 21 12 7 Answer the following. Round your answers to the nearest thousandths. (a) From Maya's results, compute the experimental probability of landing on blue or red (b) Assuming that the spinner is fair, compute the theoretical probability of landing on blue or red (c) Assuming that the spinner is fair, choose the statement below that is true.

f(x)=e^x/(2 x^2+5) f'(x)=

Graph the given functions, (f) and (g), in the same rectangular coordinate system. Describe how the graph of (g) is related to the graph of (f). (f(x)=x) (g(x)=x-10) Use the graphing tool to graph the functions. How is the graph of (g) related to the graph of (f)? A. The graph of (g) is the graph of (f) shifted 10 units vertically up. B. The graph of (g) is the graph of (f) shifted 10 units vertically down. C. The graph of (g) is the graph of (f) shifted 10 units horizontally left. D. The graph of (g) is the graph of (f) shifted 10 units horizontally right.

QUESTION 5 Match each location with the process that is producing melt. Hint, location A is supposed to represent a hotspot and location E is a pluton in Earth's interior that used to be an old magma chamber that appears to be heating up rock around it. Location A - Hotspot 1. Adding volatiles to the mantle lowers the boiling temperature of the rock - called flux melting Location B - You decide the type of Plate Boundary Location C - You decide the type of Plate Boundary 2. Hot mantle rock heats nearby crustal rock - called heat transfer Location D - Rift zone, a type of Divergent Plate Boundary 3. Pressure is decreased - called decompression melting Location E- Igneous Plution, magmatic body in the subsurface

A rope is attached to a boat at water level and a woman on a dock is pulling on the rope at the rate of 50 ft / min. If the woman's hands are 16 ft above the water level, how fast is the boat approaching the dock when the amount of rope out is 20 ft?

Given that f(x)=x^2-6 and g(x)=3x+4, find (f-g)(-2), if it exists. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. (f-g)(-2)= (Simplify your answer.) B. The value for (f-g)(-2) does not exist.

Find the slope determined by the following pair of points. (-3,-4),(3,-2)

In the spinal cord, where is the white matter in relation to the gray matter? Distal Deep Proximal Superficial

A projectile is launched upward with a velocity of 256 feet per second from the top of a 60 foot stage. What is the maximum height attained by the projectile?

The function f(x)=3 *(1/2)^x is a decreasing function. True or False

Use the equation below to find v, if u = 15, a = 8, and t = 2. v = u + at v = [] Explanation Check

A rectangular plate is acted upon by the force and couple shown. This system is to be replaced with a single equivalent force. The force acting at point B is (FB=49 N). For (alpha=40^circ). determine the magnitude and the location of the line of action of the equivalent force. The magnitude of the equivalent force is 9 N and the line of action P intersects line AB at m to the left of B. (Round the final answer to three decimal places.)

In this example we considered the function W=f(T, v), where W is the wind-chill index, T is the actual temperature, and v is the wind speed. A numerical representation is given in this table. (a) What is the value of f(-15,60) ? What is its meaning? We get f(-15,60)= , which means that if the temperature is -15°C and the wind speed is 60 km / h, then the air would feel equivalent to approximately °C without wind. (b) Describe in words the meaning of the question "For what value of v is f(-20, v)=-30 ?" The question is asking: when the temperature is °C, what wind speed gives a wind-chill index of °C ? Answer the question. v= km / h (c) Describe in words the meaning of the question "For what value of T is f(T, 20)=-43 ?" The question is asking: when the wind speed is km / h, what temperature gives a wind-chill Index of °C ? Answer the question. T= °C (d) What is the meaning of the function W=f(-10, v) ? Describe the behavior of this function. The function W=f(-10, v) means that we fix T at and allow v to vary, resulting in a function of one variable. In other words, the function gives wind-chill index values for different wind speeds when the temperature is °C. From the table (look at the row corresponding to T=-10 ), the function - Select - and appears to approach a constant value as v increases. (e) What is the meaning of the function W=f(T, 80) ? Describe the behavior of this function. The function W=f(T, 80) means that we fix v at and allow T to vary, again giving a function of one variable. In other words, the function gives wind-chill index values for different temperatures when the wind speed is km / h. From the table (look at the column corresponding to v=80 ), the function -Select - almost linearly as T Increases.

Resultants of Coplanar Force Systems 3.1 through 3.3 Determine the magnitude, direction, and sense of the resultant for the coplanar concurrent force systems shown. Use the parallelogram law. Also sketch the force triangle.

An object of mass 10 kg is released from rest 2000 m above the ground and allowed to fall under the influence of gravity. Assuming the force due to air resistance is proportional to the velocity of the object with proportionality constant b=50 N sec/m, determine the equation of motion of the object. When will the object strike the ground? Assume that the acceleration due to gravity is 9.81 m / sec^2 and let x(t) represent the distance the object has fallen in t seconds. Determine the equation of motion of the object. x(t)=

Suppose that the cost, p, of shipping a 3-pound parcel depends on the distance shipped, x, according to the function p(x) depicted in the graph. Find each limit, if it exists. lim x → 500− p(x), lim x → 500 p(x), lim x → 500+ p(x) A. 5 ; 10,10 B. 5 , does not exist; 10 C. 5 ; 5 ; 10 D. 5 ; does not exist, does not exist

The figure below is reflected over x-axis and then translated right 5 units. What are the coordinates of the image of point Q after these transformations?

Use the triangle

Graph the following function: (y=frac52 cos (x-5 pi)) Step 1 of 2: Identify the shape of the more basic function that has been shifted, reflected, stretched or compressed.

Question 1 1 pts You are standing on Earth's equator. Which way is Polaris, the North star? 30 degrees up, due West. directly overhead. on the northern horizon. The answer depends on what time of day (or night) it is.

r(t) = ⟨t, sin t⟩, t = π/3

그림과 같이 36 m 높이에서 정지해 있던 질량이 10 kg 인 물체가 자유낙하하였다. 물체의 속력이 19.6 m / s 가 되는 순간의 높이 h 는? (단, 마찰과 공기 저항은 무시한다.) (1) 0 m (2) 16.4 m (3) 18.0 m (4) 20.4 m (5) 26.4 m

Starting 90 is a racehorse means that the doors according to the function A(t) = A0 e^0.024t, where A0 is the initial amount present and t is time in years. Assume that a scientist has a sample of 500 grams. (a) What is the decay rate of technetium-99? (b) How much will 240 grams of technetium-99 be left? (c) What is its half-life, assuming? (d) When will only 200 grams of technetium remain? (e) What is the initial amount?

(a) How many atoms of helium gas fill a spherical balloon of diameter 31.0 cm at 17.0°C and 1.00 atm? atoms (b) What is the average kinetic energy of the helium atoms? J (c) What is the rms speed of the helium atoms? km / s

A 0.437 g sample of an unknown pure noble gas occupies a volume of 0.335 L at a pressure of 1.00 atm and a temperature of 100.0°C. The unknown gas is most likely krypton, xenon, helium, argon, neon.

A thermometer reads 6°C is brought into a room with a constant temperature of 23°C. If the thermometer heats 1/2 all the way for 5 minutes, what will read after that?

While on a geologic expedition, you unearth a large, dark stone with an excellent print of a fossil embedded within the rock. Because of the dark color, your friend automatically assumes that it is an igneous rock. Explain why it is uncommon to find fossils in igneous rock.

At an ice cream stand, the purchases for one month are recorded in the table below: Smoothie Shake Ice Cream ------------------------------------------ Strawberry 41 53 43 Apple 73 59 37 Banana 89 13 29 If we choose a customer at random, what is the probability that they have purchased a shake or it is strawberry? P( Strawberry or Shake )=

Find the slope of the line tangent to the graph of f(x) = 2 sqrt(x) at x = 1/1.

Crossbracing is acceptable as a midrail when the crossing point is between inches and inches above the work platform.

A student is skateboarding down a ramp that is 7.46 m long and inclined at 17.3° with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 3.82 m / s. Neglect friction and find the speed at the bottom of the ramp.

Graph the following inequality. 3x + 4y > 12

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 585 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the same. Find the tensions in the rope to the left and to the right of the mountain climber. TL=mathbfi TR=mathbfi

20. 그림과 같이 일정량의 기체를 넣고 온도를 높였을 때 나타나는 변화로 옳은 것은? (단, 기체의 압력은 일정 하다.) (1) 입자의 수가 많아진다. (2) 기체의 부피가 늘어난다. (3) 기체의 질량이 작아진다. (4) 입자의 운동이 둔해진다. (5) 입자 사이의 거리가 가까워진다.

y > 2x - 2 y < -1/4 x + 2

Find the intercepts and asymptotes, use limits to describe the behavior at the vertical asymptotes, and analyze and draw f(x)=(x^2+2x-3)/(x^2-64) The function has no horizontal asymptote. The function has a slant asymptote.

A trough has ends shaped like isosceles triangles, and has a length of 10 m, width 3 m, and height 4 m. Water is being pumped into the trough at a rate of 1 m^3 / min. At what rate does the height of the water change when the water is 3 m deep? dh/dt m / min

Deep-sea hydrothermal vents (black smokers) are most commonly located at what plate boundary? convergent boundaries with oceanic to oceanic plate subduction divergent boundaries of the mid-ocean ridge divergent boundaries of the East African Rift convergent boundaries with subduction zones

Question 1 Express the number in terms of i. -√(-144) -12 i 12 i 12

A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. The mass of the losing player plus equipment is 95.0 kg, and he is accelerating at 1.17 m / s^2 backward. (a) What is the force of friction (in N) between the losing player's feet and the grass? (Enter the magnitude.) N (b) What force (in N) does the winning player exert on the ground to move forward if his mass plus equipment is 112 kg? (Enter the magnitude.) N

Calculate the volume of liquid in the test tube sketched below. Give your answer in milliliters, and round to the nearest 0.1 mL.

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that angle B1 is larger than angle B2.) a=32, c=42, angle A = 33° angle B1 = square°, angle B2 = square° angle C1 = C2 = C2 = b° b1 = b2

Differentiate. h(θ)=θ^2 sin (θ) h'(θ)=

r(x)=-7x p(x)=x^2+8x q(x)=sqrt(9-x)

A ball is thrown vertically upward from the top of a building 128 feet tall with an initial velocity of 112 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s=128+112t-16t^2. (a) After how many seconds does the ball strike the ground? (b) After how many seconds will the ball pass the top of the building on its way down?

You turn to the next task that you were assigned, where an object is moving at a constant speed of 3.4 meters per second (m / s). a. Find the distance d that the object as a function of the time spent moving, t. Call this function d(t). Use *, an asterisk, for any multiplication and /, a slash, for any division. d(t)=3.4 * t b. Find the inverse function by expressing the time spent moving, t, in terms of the distance moved, d. Call this function t(d). Use *, an asterisk, for any multiplication and /, a slash, for any division.

Concept Simulation 10.3 illustrates the concepts pertinent to this problem. A 0.47-kg object is attached to one end of a spring, as in the first drawing, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the second drawing. With the aid of there data, determine (a) the amplitude A of the motion, (b) the angular frequency ω, (c) the spring constant k, (d) the speed of the object at t=1.0 s, and (e) the magnitude of the object's acceleration at t=1.0 s.

En una paleteria se pretenden preparar 300 paletas de agua, cada paleta tiene una masa de 55 g de agua y, estas se encuentran a 20°C y el refrigerador las congelará a -5°C, calcula la cantidad de calor cedido en calorias que será necesario reducir para que el agua se congele. Debes de tomar en cuenta las constantes dadas en la tabla, debes de escribir el resultado de las unidades como se representan en la tabla.

Question 3 4 pts The authors of the paper "Action-Video-Game Alters the Spatial Resolution of Vision," (Psychological Science[2007]:88-94) concluded that spatial resolution, an important aspect of vision, is improved by playing action video games. They based this conclusion on an experiment in which 32 volunteers who had not played action video games were "equally and randomly divided between the experimental and control groups." Subjects in each group played a video game for 30 hours over a period of 6 weeks. Those in the experimental group played Unreal Tournament 2004, an action video game. Those in the control group played Tetris, a game that does not require the user to process multiple objects at once. Based on this description of the experiment, which control is part of the experiment design? Check all that apply. a control group random assignment direct control blinding

The temperature of a sample of copper increased by 23.5°C when 269 J of heat was applied. What is the mass of the sample? Substance Specific heat J /(g · °C) ------ lead 0.128 silver 0.235 copper 0.385 iron 0.449 aluminum 0.903 m= g

A scuba diver experiences a pressure of 2.86 × 10^4 torr. Convert this pressure to atm. Be sure your answer has the correct number of significant figures.

Problem 3: (9% of Assignment Value) A pebble is dropped from rest from the top of a building. It takes Δt=3.29 s for it to reach the ground. Use the coordinate axes provide in the image. Part (a) What is the initial velocity, in meters per second, of the pebble? vi= m / s

Question 15 4 points Save Answer Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move? right to left left to right in circles It is impossible to tell.

Question 12 4 points Save Answer If three identical bulbs are connected in parallel across a 12-V battery, the voltage across each bulb will be 12 V . 36 V . 4 V . none of the above.

Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation? E =

In a performance test, each of two cars takes 9.7 s to accelerate from rest to 27 m / s. Car A has a mass of 1427 kg, and car B has a mass of 1898 kg. Find the net average force that acts on (a) car A and (b) car B during the test.

Now that we have established Newton's Second Law of Motion ( ΣF=m a) what will happen to a box if I push it with 10N? Remember to switch among the tabs on your PC. a) The 5 kg box will accelerate more than the 10 kg box b) The 5 kg box will accelerate the same as the 10 kg box c) The boxes will not accelerate d) The 5 kg box will accelerate less than the 10 kg box

Solve the following system by the elimination method -x-6y=1 -3x-4ixy=3

To demonstrate springs in a two-dimensional lattice, you build the apparatus shown below that is composed of 8 parallel chains of springs, with each chain containing 2 identical low-mass springs in series. At the top and bottom, the springs are attached to a lightweight rod. A mass of 10 kg is attached to the bottom rod. Relaxed, the distance d from the bottom to the top of the apparatus is 0.12 m . (The top of the apparatus is attached to the ceiling in the lab which is not shown.) Each of the 16 springs has a stiffness of 48 N / m. If you support the bottom of the apparatus at rest and if d=0.503 m, what is the magnitude of the force by your hand on the apparatus? Fhand = i N

A 2.2 -m-long steel rod must not stretch more than 1.2 mm when it is subjected to a 5.0-kN tension force. It is given that E= 200 GPa. Determine the smallest diameter rod that should be used. The smallest diameter rod that should be used is mm.

Question 2 1 pts 2 Ignoring air resistance, the velocity of a falling object is constant. is constantly increasing. increases for a while, then becomes constant. depends on the mass of the object. Question 3 1 pts

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