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Author Question: A half-ring (semicircle) of uniformly distributed charge Q has radius R. What is the electric ... (Read 185 times)

luvbio

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on: Jul 29, 2018
A half-ring (semicircle) of uniformly distributed charge Q has radius R. What is the electric potential at its center?
 
  What will be an ideal response?

Question 2

Given that the wavelengths of visible light range from 400 nm to 700 nm, what is the highest frequency of visible light? (c = 3.0 x 108 m/s)
 
  A) 3.1  108 Hz
  B) 7.5  1014 Hz
  C) 2.3  1020 Hz
  D) 4.3  1014 Hz
  E) 5.0  108 Hz


tofugiraffe

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

Q/4 0R

Answer to Question 2

B


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luvbio

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Reply #2 on: Jul 29, 2018
TY


tofugiraffe

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Reply #3 on: Jul 29, 2018
You're welcome


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