The celebrated equation E=mc2 or m=E/c2 (c is the speed of light) tells us how much mass loss, m, must be suffered by a nuclear reactor in order to generate a given amount of energy, E. Which of the following statements is correct?
a) Thc same equation E=mc2 or m=E/c2, also tells us how much mass loss, m, must be suffered by a flashlight battery when the flashlight puts out a given amount of energy, E.
b) The equation E=mc2 applies to nuclear energy in a reactor, but not to chemical energy in a battery.
Light bulbs A and B are identical in all ways except that B's filament is thicker than A's. If screwed into 110-volt sockets,
a) A will be the brightest because it has the most resistance
b) B will be the brightest because it has the most resistance
c) A will be the brightest because it has the least resistance
d) B will be the brightest because it has the least resistance
e) Both will have the same brightness
On a clear and sunny day you are on snow and look at your shadow. You
see that it is tinted
a) red
b) yellow
c) green
d) blue
e) not at all
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