Summary

• Special relativity
• Relativistic mechanics

• Written Quiz    Timer
  
  
• Relativistic mechanics
  • mass-energy
    Example #1
    
  • momentum & energy
    Example #2
    
  • nuclear energy
  • relativistic addition of velocities
    Example #3
    
  
  
• General relativity
  • equivalence principle
  • gravity & space
  • gravity & time
  • experimental evidence
  
  

kw5 10.
For how much time could you run a 7 kilowatt air conditioner using the mass-energy in one kilogram?
A. 7,000 years
B. 407,000 years
C. 2.85�10⁹ years
D. 9�10¹⁶ years
Answer







sj6 39.39
A proton moves at 0.950c. Calculate its kinetic energy.
A. 0.950E₀                B. 1.00E₀
C. 2.20E₀                  D. 3.20E₀
Answer







gc6 26.tb34
A spaceship moves away from the Earth at 0.80c. The spaceship then fires a missile in the forward direction at 0.50c relative to the spaceship. What is the velocity of the missile measured by observers on the Earth?
A. 0.500c                B. 0.834c
C. 1.30c                  D. 0.929c
Answer







 



B. 407,000 years













 



C. 2.20E₀













 



D. 0.929c