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Author Question: If the electric field is halved in a region of space, what happens to the electric field energy in a ... (Read 876 times)

geodog55

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on: Jul 28, 2018
If the electric field is halved in a region of space, what happens to the electric field energy in a 10 cm3 volume of this space.
 a. It quadruples.
  c. It halves.
  b. It becomes one fourth as much.
  d. It doubles.

Question 2

A 0.20-m radius grinding wheel starts at rest and develops an angular speed of 12.0 rad/s in 4.0 s. What is the average tangential acceleration of a point on the wheel's edge?
 a. 0.45 m/s2
  c. 28 m/s2
  b. 0.60 m/s2
  d. 14 m/s2


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trog

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

B

Answer to Question 2

B


geodog55

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Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

Sarahjh

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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