A Square Plate Has an Area of 29 $\degree$ C It Will Be Used in a Low Temperature Experiment

question 24

Multiple Choice

A square plate has an area of 29.00 cm² at 20.0 $\degree$ 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 $\degree$ C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10* 10-6 ( $\degree$ C) -1.)

• A)0.079 3 cm²
• B)0.159 cm²
• C)0.238 cm²
• D)0.841 cm²
• E)0.921 cm²

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