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Author Question: A proton with initial kinetic energy E is moving in circular motion in a uniform magnetic field. ... (Read 46 times)

cmoore54

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on: Jul 28, 2018
A proton with initial kinetic energy E is moving in circular motion in a uniform magnetic field. When it has completed one fourth of a revolution, what is its kinetic energy?
 a. 1.4 E
  c. E
  b. 0.71 E
  d. The value is not given.

Question 2

Water pressurized to 4  105 Pa is flowing at 5.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction? (density of water = 1  103 kg/m3)
 a. 2  105 Pa, 15 m/s
  c. 3  105 Pa, 15 m/s
  b. 3  105 Pa, 10 m/s
  d. 4  105 Pa, 1.5 m/s


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huda

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

C

Answer to Question 2

C


cmoore54

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

6ana001

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Reply 3 on: Yesterday
Excellent

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