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Author Question: A metal rod is falling toward the surface of the Earth near the equator. As it falls, one end of the ... (Read 41 times)

serike

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on: Jul 28, 2018
A metal rod is falling toward the surface of the Earth near the equator. As it falls, one end of the rod becomes positively charged due to the motional emf of the rod through the Earth's magnetic field. The rod is oriented so that:
 a. the rod is horizontal with the positive end toward the east.
  b. the rod is horizontal with the positive end toward the north.
  c. the rod is vertical with the positive end higher.
  d. the rod is horizontal with the positive end toward the west.

Question 2

Suppose a 0.30-kg mass on a spring that has been compressed 0.20 m has elastic potential energy of 1.0 J. How much further must the spring be compressed to triple the elastic potential energy?
 a. 0.35 m
  c. 0.10 m
  b. 0.15 m
  d. 0.05 m


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iman

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

A

Answer to Question 2

B


serike

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Reply #2 on: Jul 28, 2018
Thanks


iman

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Reply #3 on: Jul 28, 2018
Welcome :)


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