How many states are in the n = 4 shell?
A. 4
B. 9
C. 16
D. 18
E. 32
E. 32
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Chromatic aberration is a consequence of different colors in a lens having different
A) aberrations. B) frequencies. C) energies. D) critical angles. E) speeds.
A small airplane with a wing span of 12 m flies horizontally and due north at a speed of 60 m/s in a region where the magnetic field of the earth is 60 ?T directed 60° below the horizontal. What is the magnitude of the induced emf between the ends of the wing?
a. 50 mV b. 31 mV c. 37 mV d. 44 mV e. 22 mV
A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone pass each other?
a. 17 m b. 21 m c. 18 m d. 27 m e. 31 m
The diameter of the Moon is approximately
a. 800 mi. b. 239,000 mi. c. 93,000,000 mi. d. 2200 mi.