In a double-slit experiment, the intensity of light at the center ...

[future617RT]

In a double-slit experiment, the intensity of light at the center of the central fringe is measured to be 6.2  10-6 W/ m2. What is the intensity halfway between the center of the fringe and the first dark band?
 
  A)
 
  6.2  10-6 W/ m2
  B)
 
  3.1  10-6 W/ m2
  C)
 
  4.7  10-6 W/ m2
  D)
 
  1.6  10-6 W/ m2
  E)
 
  0.12  10-6 W/ m2

Question 2

A 4.20-g bullet embeds itself in a 20.0-kg block, which is attached to a horizontal spring with a force constant of 980 N/m.
 
  The maximum compression of the spring is 2.40 cm. What is the speed of the bullet just before it hits the block?
  A)
 
  800 m/s
 
  B)
 
  700 m/s
 
  C)
 
  672 m/s
 
  D)
 
  900 m/s
 
  E)
 
  952 m/s

[leeeep]

Answer to Question 1

B

Answer to Question 2

A

[future617RT]

Both answers were spot on, thank you once again

[leeeep]

Great! Please up vote