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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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?
Which units are appropriate for measurement of apparent brightness?
A) watts per square meter B) watts C) joules D) newtons