Two balls have the same size and surface texture, but one is twice as heavy as the other. How many times larger is the terminal speed of the more massive ball falling through air than that of the lighter ball?
A. The balls fall with the same speed in air.
B. The massive ball’s terminal speed is [2]1/2 times larger than the other’s.
C. The massive ball’s terminal speed is 2 times larger than the other’s.
D. The massive ball’s terminal speed is 4 times larger than the other’s.
E. The massive ball’s terminal speed is some other multiple of the other’s (specify).
B. The massive ball’s terminal speed is [2]1/2 times larger than the other’s.
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Spiral galaxies usually contain:
A) M stars. B) white dwarf stars. C) young stars. D) red giant stars.
In the diagram, which of the transitions would absorb a photon with the smallest energy (longest wavelength)?
a. Transition 1
b. Transition 2
c. Transition 3
d. Transition 4
e. Transition 5
Which spectrum is shown above?
a. continuous
b. emission
c. absorption
d. blackbody
Which of the following elements would be expected to be most stable?
A) Platinum-195 B) Iron-56 C) Carbon-12 D) Bismuth-209 E) Helium-3