A fast spaceship is traveling with a speed of 0.80c. How fast ...

[storky111]

A fast spaceship is traveling with a speed of 0.80c. How fast would light travel from the headlights of the ship relative to a stationary observer?
 
  A)
 
  0.20c
  B)
 
  0.80c
  C)
 
  1.0c
  D)
 
  1.2c
  E)
 
  1.8c

Question 2

The coefficient of linear expansion of lead is 29  10-6K-1. What change in temperature will cause a 10-m long lead bar to change in length by 3.0 mm?
 
  A)
 
  5.0 K
 
  B)
 
  10 K
 
  C)
 
  15 K
 
  D)
 
  20 K
 
  E)
 
  25 K

[GCabra]

Answer to Question 1

C

Answer to Question 2

B

[storky111]

Thank you!

[GCabra]

Always glad to help...