A silver pin is exactly 4.00 cm long when its temperature is 177∘C Find the decrease...

Question

Question

A silver pin is exactly 4.00 cm long when its temperature is 177∘C Find the decrease in long of the pin when it cools to 26.0∘C

science physics

Answer 1

Answer #1

dL = L*alpha*dT

where alpha = thermal coefficient of silver = 18*10^-6 / ^oC

=> dL = 0.04*18*10^-6*(26 - 177)

=> dL = - 108.72*10^-6 m = - 0.0108 cm

- ve sign shows decrease.

Answer 2

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