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The brass bar and the aluminium bar in the drawing are each attached to an
immovable wall. The length of each bar is given in the figure below. At 28°C the air
gap between the rods is 1.3 x 103 m. At what temperature will the gap be closed?
The thermal expansion coefficients for Aluminium and brass are 23µ (°C)- and 19
µ(°C)*!respectively.
Brass
Aluminum
-2.0m -1.0m-
Copyright © 2012, 2009, 2007, John Wiley & Sons, Inc.

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