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Author Question: A 60-mC charge is held fixed at the origin and a -20-mC charge is held fixed on the x axis at a ... (Read 53 times)

pepyto

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on: Jul 28, 2018
A 60-mC charge is held fixed at the origin and a -20-mC charge is held fixed on the x axis at a point x = 1.0 m. If a 10-mC charge is released from rest at a point x = 40 cm, what is its kinetic energy the instant it passes the point x = 70 cm?
 a. 9.8 J
  b. 7.8 J
  c. 8.8 J
  d. 6.9 J
  e. 2.8 J

Question 2

A particle (charge = 5.0 mC) is released from rest at a point x = 10 cm. If a 5.0-mC charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
 a. 1.6 J
  b. 2.0 J
  c. 2.4 J
  d. 1.2 J
  e. 1.8 J


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Moriaki

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

C

Answer to Question 2

B


pepyto

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Reply 2 on: Jul 28, 2018
:D TYSM

frankwu0507

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Reply 3 on: Yesterday
Wow, this really help

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