Questions: Wavelength - The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz. What wavelength is associated with this frequency? (Assume the speed of sound to be 340 m / s.) A) 1.7 cm B) 5.2 cm C) 34 cm D) 55 cm

Wavelength - The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz. What wavelength is associated with this frequency? (Assume the speed of sound to be 340 m / s.) A) 1.7 cm B) 5.2 cm C) 34 cm D) 55 cm
Transcript text: Wavelength - The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz . What wavelength is associated with this frequency? (Assume the speed of sound to be $340 \mathrm{~m} / \mathrm{s}$.) A) 1.7 cm B) 5.2 cm C) 34 cm D) 55 cm
failed

Solution

failed
failed

Solution Steps

Step 1: Convert kHz to Hz

The given frequency is 20 kHz. Since 1 kHz = 1000 Hz, we multiply 20 by 1000 to get 20,000 Hz.

Step 2: Calculate the wavelength

The speed of sound is given as 340 m/s. The formula relating speed (v), frequency (f), and wavelength (λ) is v = fλ. We want to solve for wavelength (λ), so we rearrange the formula to λ = v/f. Plugging in the values, we get λ = (340 m/s) / (20,000 Hz) = 0.017 m.

Step 3: Convert meters to centimeters

Since the answer choices are in centimeters, we need to convert the wavelength from meters to centimeters. Since 1 m = 100 cm, we multiply 0.017 m by 100 to get 1.7 cm.

Final Answer: The final answer is $\boxed{A}$

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Question 45 (2 points) Listen Humanistic theorists have been criticized for: overestimating the impact of childhood experiences on adult personality. underestimating the inconsistency of behavior from one situation to another. overestimating the degree of similarity among people. underestimating the inherent human capacity for destructive and evil behaviors.
failedAnswered
x 0 1 2 3 4 5 P(X) 0.10 0.20 0.45 0.15 0.05 0.05 Using the above information, the probability of less than 3 accidents is A. 0.15 B. 1.00 C. 0.90 D. 0.75
failedAnswered
Listed in the accompanying data table are student evaluation ratings of courses and professors, where a rating of 5 is for "excellent." Assume that each sample is a simple random sample obtained from a population with a a. Use the 93 course evaluations to construct a 99% confidence interval estimate of the standard deviation of the population from which the sample was b. Repeat part (a) using the 93 professor evaluations c. Compare the results from part (a) and part (b).
failedAnswered
Flu shots and other goods with external benefits generate a deadweight loss because: some units for which the cost exceeds the value are produced. some units for which the value exceeds the cost are produced. some units for which the cost exceeds the value are not produced. some units for which the value exceeds the cost are not produced.
failedAnswered
To characterize the microbes living on healthy human bodies and how those microbes differ during a disease are the goals of the Human (HMP)