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Author Question: Why do bridges have expansion joints? a. They would buckle and crack otherwise. b. to let water ... (Read 41 times)

student77

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on: Jul 28, 2018
Why do bridges have expansion joints?
 a. They would buckle and crack otherwise.
  b. to let water run off
  c. to absorb vibrations due to traffic
  d. for ease in construction

Question 2

The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10  10-6/C. On a cold day when the temperature is 10C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40C is
 a. 300.0015 m
  b. 300.015 m
  c. 300.15 m
  d. 301.5 m
  e. 315 m


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nanny

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


student77

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Reply 2 on: Jul 28, 2018
:D TYSM

bblaney

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Reply 3 on: Yesterday
Excellent

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