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SAT® Subject Test in Physics

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Moderate

Relative Specific Heats

SATPHY-QVYFEB

I place two substances, 1 and 2, in contact with each other so that they exchange heat with each other only, until they come to the same temperature. The mass of substance 1 is twice as much as the mass of substance 2. The temperature change for substance 2 is three times as much as the temperature change for substance 1.

How does the specific heat of substance 2 compare to the specific heat of substance 1?

A

The specific heat of substance 2 is 3/2 as much as the specific heat of substance 1.

B

The specific heat of substance 2 is 2/3 as much as the specific heat of substance 1.

C

The specific heat of substance 2 is bigger than the specific heat of substance 1, but we cannot determine how much bigger.

D

The specific heat of substance 2 is smaller than the specific heat of substance 1, but we cannot determine how much smaller.

E

We cannot determine how the specific heat of substance 2 is related to the specific heat of substance 1.