Questions: Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5 minutes. Battery Initial temperature (°C) Final temperature (°C) -------------------------------------------------------------------------------------------- Battery in the less expensive phone 37 22 Battery in the more expensive phone 37 25 During this time, thermal energy was transferred from each battery to the surroundings.

Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5 minutes. Battery Initial temperature (°C) Final temperature (°C) -------------------------------------------------------------------------------------------- Battery in the less expensive phone 37 22 Battery in the more expensive phone 37 25 During this time, thermal energy was transferred from each battery to the surroundings.
Transcript text: Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5 minutes. | Battery | Initial temperature (°C) | Final temperature (°C) | |------------------------------------------|--------------------------|------------------------| | Battery in the less expensive phone | 37 | 22 | | Battery in the more expensive phone | 37 | 25 | During this time, thermal energy was transferred from each battery to the surroundings.
failed

Solution

failed
failed

Solution Steps

Step 1: Understanding the Problem

The problem involves two phone batteries with identical initial temperatures but different final temperatures after cooling. We need to determine the direction of thermal energy transfer.

Step 2: Analyzing Temperature Changes

Both batteries start at 37°C. The battery in the less expensive phone cools to 22°C, and the battery in the more expensive phone cools to 25°C. In both cases, the temperature decreases, indicating that thermal energy is being lost.

Step 3: Determining the Direction of Energy Transfer

Since the temperature of both batteries decreases, thermal energy is transferred from each battery to the surroundings. This is consistent with the principle that heat flows from a hotter object to a cooler one until thermal equilibrium is reached.

Final Answer

\[ \boxed{\text{each battery . . . the surroundings}} \]

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
The rectangular coordinates of a point are given. Find polar coordinates (r, θ) of this point with θ expressed in radians. Let r>0 and -2π<θ<2π (3,-3) One possibility for the polar coordinates of this point is.
failedAnswered
Under which condition below would you expect a coarse-grained intrusive rock like diorite to form? A. Lava slowly flowing out of a fracture in Earth's surface B. Quick cooling below Earth's surface C. Slow cooling in the upper mantle D. Within a zone of fractured rocks below Earth's surface
failedAnswered
Finding a difference quotient for a linear or quadratic function Find the difference quotient (f(x+h)-f(x))/h, where h ≠ 0, for the function below. f(x)=-8x+4 Simplify your answer as much as possible. (f(x+h)-f(x))/h= П.
failedAnswered
Multiply the real numbers. [ (-5.6)(7.4)= ]
failedAnswered
The image contains a geometric diagram depicting a rectangle. The text included in the image is: x 58° 38°