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Author Question: Suppose that an aluminum wire were to be strung out in a loop that just fits snugly around the ... (Read 20 times)

theo

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on: Jul 29, 2018
Suppose that an aluminum wire were to be strung out in a loop that just fits snugly around the equator (assuming a perfectly spherical Earth with a radius of 6.37  106 m).
 
  If the temperature of the wire is increased by 0.50C, and the increase in length is distributed equally through the entire length, how far off the ground will the wire loop be? The coefficient of linear expansion of aluminum is 24  10-6 K-1.
  A) 7.6 mm
  B) 76 mm
  C) 76 cm
  D) 76 m
  E) 760 m

Question 2

A 4.00-kg block slides down a frictionless inclined plane with an acceleration 3.00 m/s2. What is the angle of the incline above horizontal?
 
  A) 35.3
  B) 45.2
  C) 17.8
  D) 23.6
  E) 53.7


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Mollythedog

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

C


theo

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Reply 2 on: Jul 29, 2018
Gracias!

softEldritch

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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