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Author Question: Electric power is measured in a)watts or kilowatts. b)amperes or milliamperes. c)ohms or megohms. ... (Read 80 times)

acc299

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on: Jul 29, 2018
Electric power is measured in
  a)watts or kilowatts.
  b)amperes or milliamperes.
  c)ohms or megohms.
  d) volts or megavolts.

Question 2

A celestial object called a pulsar emits its light in short bursts that are synchronized with its rotation. A pulsar in the Crab Nebula is rotating at a rate of 30 revolutions/second. What is the maximum radius of the pulsar, if no part of its surface can move faster than the speed of light (3  108 m/s)?

Question 3

Electric current is measured in which SI units?
  a) watts.
  b) joules.
  c) amperes.
  d) coulombs.

Question 4

A direct current
  a) often changes direction as it flows through a conductor.
  b) may change in magnitude but always flows in the same direction in a conductor.
  c) must always remain constant in magnitude but can travel in any direction through a conductor.
  d) can be used in a circuit with a transformer to change the voltage in that circuit.

Question 5

A horizontal force of magnitude 6.5 N is exerted tangentially on a Frisbee of mass 32 grams and radius 14.3 cm. Assuming the Frisbee, a uniform disk, is originally at rest and the force is exerted for 0.08 s, determine the angular velocity of rotation about the central axis when the Frisbee is released.


flannelavenger

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

a

Answer to Question 2

1 590 km

Answer to Question 3

c

Answer to Question 4

b

Answer to Question 5

227 rad/s


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acc299

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


flannelavenger

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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