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A Copper Plate Has a Hole with a Diameter Of 2.50

Question 32

Multiple Choice

A copper plate has a hole with a diameter of 2.50 cm2.50 \mathrm{~cm} . A copper shaft with a diameter of 2.501 cm2.501 \mathrm{~cm} is to be inserted into the hole. If the linear coefficient of thermal expansion for copper is 17.0×106/C17.0 \times 10^{-6} /{ }^{\circ} \mathrm{C} , then what decrease in temperature of the copper shaft is required for the shaft to just fit inside the hole?


A) 33.3C33.3^{\circ} \mathrm{C}
B) 39.5C39.5^{\circ} \mathrm{C}
C) 30.1C30.1^{\circ} \mathrm{C}
D) 23.5C23.5^{\circ} \mathrm{C}
E) 26.4C26.4^{\circ} \mathrm{C}

Correct Answer:

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