As a spaceship moving toward you at half the speed of light fires ...

[Mollykgkg]

As a spaceship moving toward you at half the speed of light fires a probe toward you, relative to itself at 0.7 the speed of light, you see the probe approaching at about
 
  A) 0.70c.
  B) 0.87c.
  C) 0.89c.
  D) 0.92c.
  E) 0.96c.

Question 2

In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20  10-5 m. What is the angle corresponding to the first bright fringe?
 
  A) 1.56
  B) 2.22
  C) 3.12
  D) 4.70
  E) 6.24

[ecox1012]

Answer to Question 1

Answer: C

Answer to Question 2

A