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The Eiffel Tower (Fig. 13–31) is built of wrought iron approximately 300 m tall. Estimate how much its height changes between January (average temperature of $2 ^\circ \textrm{C}$) and July (average temperature of $25 ^\circ \textrm{C}$). Ignore the angles of the iron beams and treat the tower as a vertical beam.

Problem 9. The Eiffel Tower in Paris.

Figure 13-31 The Eiffel Tower in Paris.

Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014. Reprinted by permission of Pearson Education Inc., New York.
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Quick Answer: 

$8\textrm{ cm}$

Giancoli 7th Edition, Chapter 13, Problem 9