An electronic game requires 6 V for operation. With a transformer it can be powered by a 120-V outlet. If the primary has 500 turns, the secondary has
A) 4 turns.
B) 25 turns.
C) 50 turns.
D) more than 50 turns.
E) none of the above
Answer: B
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Which feature of this plot indicates that the neutrino has a very small rest mass?
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The person who first explained the photoelectric effect was
a. Max Planck b. Albert Einstein c. Neils Bohr d. Erwin Schroedinger e. Werner Heisenberg
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Six months of darkness at the North Pole begins when the Sun is at the
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