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View offset next&assignmentProblemlDa73628959; Secure https//sessionmasteringphysics.com/myot nem signed in as shameaa Shields Physics 2350 Winter 2017 previous 12of Part A of as ignore the angles of Estimate how much height changes between January taverage temperature of 2 and July (average temperature The Enel Tower he figure)is but of wrought iron approximately 300 m tal Assume the coefficient of themal the iron beams and treat the tower as a vertical beam expansion of wought iron is 12 x 10 1/C Express your answer to two signiscant figures and indude the appropriate units. Al. Value Units Submi My Answers Grew CD a

Explanation / Answer

Given

Eiffle tower height approximately l1 = 300 m

coefficient of thermal expansion of iron is alpha = 12*10^-6 /0C

the temperatures in Jan 2 0C , in july is 25 0C

the temperature difference is dT = 23

from the definition of linear expansion of solids upon heating is

   alpha = (l2-l1)/ l1(T2-T1)

   dL = l1(T2-T1)*alpha

   dL = 300(23)(12*10^-6) m

   dL = 0.0828 m
the Eiffle Tower changes its height about 0.0828 m , or 8.28 cm

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