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Author Question: The potential of a uniformly charged sphere is lowest at A) infinity. B) a distance ... (Read 70 times)

mmm

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on: Jul 29, 2018
The potential of a uniformly charged sphere is lowest at
 
  A)
 
  infinity.
  B)
 
  a distance from the sphere equal to its radius.
  C)
 
  a distance from the sphere equal to its diameter.
  D)
 
  the surface of the sphere.
  E)
 
  the center of the sphere.

Question 2

John's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and erect, what is the focal length of the mirror?
 
  A)
 
  10 cm
  B)
 
  20 cm
  C)
 
  30 cm
  D)
 
  40 cm
  E)
 
  50 cm


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jojobee318

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

A

Answer to Question 2

D


mmm

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Reply 2 on: Jul 29, 2018
Gracias!

AmberC1996

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Reply 3 on: Yesterday
Wow, this really help

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