A square plate has an area of 29.00 cm2 at 20.0°C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2. What area must be removed from the plate at 20.0°C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 × 10?6 (°C)?1.)

A. 0.079 3 cm2
B. 0.159 cm2
C. 0.238 cm2
D. 0.836 cm2
E. 0.921 cm2


Answer: D

Physics & Space Science

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