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A Square Plate Has an Area of 29 °\degree CIt Will Be Used in a Low Temperature Experiment at 20.0

Question 4

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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 form 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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