ch18-p021 - 21. Consider half the bar. Its original length...

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22 2 2 2 00 0 0 x TT =+ Δ −= Δ AA αα and () 62 0 3.77m 2 2 25 10 /C 32 C 7.5 10 m. 2 xT α −− = × ° ° = × A 21. Consider half the bar. Its original length is /2 L = A and its length after the temperature increase is T Δ A . The old position of the half-bar, its new position, and the distance x that one end is displaced form a right triangle, with a hypotenuse of length A , one side of length
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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