The intensity of the waves from a point source at a distance d ...

[MGLQZ]

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

[wergv]

Answer to Question 1

D

Answer to Question 2

A

[MGLQZ]

TYSM

[xiaomengxian]

YES! Correct, THANKS for helping me on my review