In simple harmonic motion, the acceleration is proportional to
A)
the velocity.
B)
the frequency.
C)
the amplitude.
D)
the displacement.
E)
all of the above
D
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Which units are appropriate for measurement of apparent brightness?
A) watts per square meter B) watts C) joules D) newtons
You observe an x-ray burster. Based on current understanding, you can also conclude that you are observing
A) a close binary system in which one member is a white dwarf. B) a close binary system in which one member is a neutron star. C) a close binary system in which one member is a black hole. D) a close binary system in which one member is a neutron star and the other is a black hole.
The apparent shape of an elliptical galaxy is an effect of perspective.
Answer the following statement true (T) or false (F)
The period of a pendulum is 2.0 s in a stationary inertial frame of reference. What is its period when measured by an observer moving at a speed of 0.60c with respect to the inertial frame of reference?
What will be an ideal response?