If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum acceleration of the oscillator change?
A) 2
B) 4
C) 1
D) 1/2
E) 1/4
B
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Astronomers have decided that, rather than being a planet, Pluto is really just a large member of
A) the asteroid belt. B) the Kuiper belt. C) the Oort cloud. D) the moon system around Neptune. E) an extrasolar planetary system.
The short lifetime of muons created in the upper atmosphere of the Earth would not allow them to reach the surface of the Earth unless their lifetime increased by time dilation. From the reference system of the muons, the muons can reach the surface of the Earth because
a. time dilation increases their velocity. b. time dilation increases their energy. c. length contraction decreases the distance to the Earth. d. the relativistic speed of the Earth toward them is added to their velocity.
Mineral sample #1 is ____________.
Calcite - CaCO3 Dolomite - CaMg(CO3)2 Fluorite - CaF2
The vertical height attained by a basketball player who achieves a hang time of a full 1 s is about
A) 0.8 m. B) 1 m. C) 1.2 m. D) 2.5 m. E) more than 2.5 m.