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Author Question: The intensity of the waves from a point source at a distance d from the source is I. What is the ... (Read 75 times)

MGLQZ

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on: Jul 29, 2018
The intensity of the waves from a point source at a distance d from the source is I. What is the intensity at a distance 2d from the source?
 
  A) 4I
  B) 2I
  C) I/2
  D) I/4
  E) I/

Question 2

If 3.0  1015 electrons flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current through the wire? (e = 1.60  10-19 C)
 
  A) 0.12 mA
  B) 0.24 mA
  C) 7.5  107 A
  D) 7.5  1014 A


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wergv

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

D

Answer to Question 2

A


MGLQZ

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

diana chang

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Reply 3 on: Yesterday
Excellent

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