SAT Subject Physics Practice Question 131: Answer and Explanation

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Question: 131

4. On a cold winter day (5°C), the foundation block for a statue is filled with 2.0 m3 of concrete. By how much will the concrete’s volume increase on a very warm summer day (35°C) if its coefficient of volume expansion is 4.0 × 10–5/°C ?

A. 160 cm3
B. 1,200 cm3
C. 1,600 cm3
D. 2,400 cm3
E. 3,200 cm3

Correct Answer: D

Explanation:

The equation for volume expansion is ∆V = βViT, so

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