(I) The Eiffel Tower (Fig. 13–31) is built of wrought iron approximately 300 m tall. Estimate how much its height changes between January (average temper- ature of 2°C) and July (average temperature of 25°C). Ignore the angles of the iron beams and treat the tower as a verti- cal beam. IGURE 13–31 Problem 9. he Eiffel Tower in Paris.

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