Thermal Expansion: The coefficient of linear expansion of copper is 17 × 10-6 K-1. A sheet of copper has a round hole with a radius of 3.0 m cut out of it. If the sheet is heated and undergoes a change in temperature of 80 K, what is the change in the radius of the hole?
A. It decreases by 4.1 mm.
B. It increases by 4.1 mm.
C. It decreases by 8.2 mm.
D. It increases by 8.2 mm.
E. It does not change.
Answer: B
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