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Author Question: A 20-mF capacitor is attached across a 1000-V power supply. What is the net charge on the capacitor? ... (Read 139 times)

londonang

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on: Jul 28, 2018
A 20-mF capacitor is attached across a 1000-V power supply. What is the net charge on the capacitor?
 a. 20 mC
  c. 10 mC
  b. 40 mC
  d. none of these choices

Question 2

An 80-kg man is one fourth of the way up a 10-m ladder that is resting against a smooth, frictionless wall. If the ladder has a mass of 30 kg and it makes an angle of 60 with the ground, find the force of friction of the ground on the foot of the ladder.
 a. 7.8  102 N
  c. 50 N
  b. 2.0  102 N
  d. 1.7  102 N


Moriaki

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

D

Answer to Question 2

B


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