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Question

An iron ball at 104°F is dropped in a mug containing​ water at 40°C. ​ The heat will ______.



Your Answer
A
flow from the iron ball to the water
Your Answer
B
flow from the water to the iron ball​
Correct Answer
C
not flow at all
Your Answer
D
increase for both

Solution

The correct option is C not flow at all
We first need to know the temperature on a common scale.

Converting 40C to Fahrenheit:

xC=[95x+32]F
40C=[95×40+32]F
40C=[72+32]F
40C=104F

Heat flows from a body at high temperature to a body at low temperature. Since the iron ball and the mug of water is at same temperature, no heat will flow at all.​

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