Reference no: EM132521590
1. In Newtonian mechanics, the speed of light
a) is 3 x 108m/s
b) friction
c) strong nuclear
d) weak nuclear
e) electromagnetic
2. Simultaneous events in one frame of reference mean that the event will be
a) simultaneous in all frames of reference
b) only simultaneous if both frames are moving in the same direction
c) only simultaneous if both frames are moving in the opposite direction
d) only simultaneous in the same frame of reference
e) simultaneity cannot be determined
3) The length of a horizontal metere stick is 0.75c is
a) 1.00 m
b) 0.66 m
c) 0.44 m
d) 0.56 m
e) 1.51 m
4. A ship flies at 0.82c and is observed by ground-based radar to be 55m in length. What is the ship's proper length?
a) 96 m
b) 73 m
c) 45 m
d) 43m
e) 31 m
5. As the sun "burns" in a nuclear fusion reaction , it is
a) gaining mass
b) losing mass
c) neither gaining of losing mass
d) recycling mass energy levels
e) none of the above
6) Time is
a) dependent on the observer
b) absolute
c) the same for different observers
d) simultaneous in all cases
e) never changing
7) The equation E=mc2 illustrates that
a) energy can be converted into mass
b) rest mass and energy are equivalent
c) travelling at the speed of light converts matter into energy
d) Matter can be converted into energy
e) b and d are correct
8. In the photoelectric effect, the work function is
a) the amount of energy required to release an electron
b) the amount of kinetic energy possessed by the electron
c ) dependent on the frequency of light
d) the same as the threshold energy
e) none of the above
9. Newtonian mechanics are valid
a) in all frames of reference
b) in relativistic frames of reference
c) in inertia frames of reference
d) on Earth only
e) both b and c
10. Two spaceships are heading toward each other at a mutal speed of 0.999c. Both ships shine a laser beam at one another. How will each ship see the other light?
a) Both ships will see the other light
b) Both ships will see the light travelling at c
c) The one ship will see the light travelling at c, and the other will see it travelling at 2c
d) Neither will see the light travelling at 2c.
e) none of the above