Which will stay cooler for a longer time in a picnic cooler on a hot summer day?
A) sandwiches
B) salami
C) Jello
Answer: C
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Which arrow best indicates the direction of the electric field at point P created by particle C?
A. A B. B C. C D. D E. Zero F. AA G. BB H. CC I. DD
Unpolarized light is passed through polarizer 1 . The light then goes though polarizer 2 with its plane of polarization at 60.0° to that of polarizer 1 . What fraction of the intensity of the original light gets though the second polarizer?
a. 0.125 c. 0.707 b. 0.250 d. 0.500
If you think of a battery as an electric charge ‘pump,' the battery voltage is analogous to
a. rate of fluid flow b. pressure c. flow velocity d. water e. none of the above
Radioactivity Basics: Polonium-216 decays to lead-212 by emitting what kind of nuclear radiation?
A. alpha B. beta-minus C. beta-plus D. gamma E. x-rays.