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Author Question: The current in an electron beam in a cathode-ray tube is measured to be 280 A. How many electrons ... (Read 237 times)

daltonest1984

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on: Jul 28, 2018
The current in an electron beam in a cathode-ray tube is measured to be 280 A. How many electrons hit the screen in 50 s? (e = 1.6  10-19 C)
 a. 2.2  1011 electrons
  c. 8.8  1015 electrons
  b. 8.8  1016 electrons
  d. 2.2  1015 electrons

Question 2

According to Newton's second law, the angular acceleration experienced by an object is directly proportional to:
 a. its moment of inertia. b. the net applied torque.
  c. the object's size.
  d. choices a and b above which are both valid.


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jackie

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

B

Answer to Question 2

B


daltonest1984

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


jackie

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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