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Author Question: A steel cable spanning a river is 200.000 m long when the temperature is 20.C. What will be its ... (Read 27 times)

leo leo

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on: Jul 27, 2018
A steel cable spanning a river is 200.000 m long when the temperature is 20.C. What will be its length when the temperature drops to 0C? (The coefficient of thermal expansion of steel is 12.  10-6K-1.)
 
  What will be an ideal response?

Question 2

How far apart should two protons be if the electrical force of repulsion is equal to the weight (attraction to the Earth) of one of the protons?
 
  What will be an ideal response?


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momtoalll

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Reply #1 on: Jul 27, 2018
Answer to Question 1

199.952 m

Answer to Question 2

12. cm


leo leo

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

Liddy

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Reply 3 on: Yesterday
:D TYSM

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