If we have a new moon today, when we will have the next full moon?
A) in about 6 months B) in about 1 month C) in about 1 week D) in about 2 weeks
D
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An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could
A) double the amplitude of vibration. B) double the force constant (spring constant) of the spring. C) double both the amplitude and force constant (spring constant). D) double the mass. E) double both the mass and amplitude of vibration.
While an iron block near the Earth's surface is in free fall, it undergoes an increase in
A) speed. B) acceleration. C) both of these D) neither of these
Tarzan swings back and forth on a long vine. His friend Jane notices in amazement that he makes 30 complete swings in 2.4 minutes. (a) What is the frequency (in hertz) of Tarzan's swing? (b) How long is the vine he is using?
What will be an ideal response?
In Hubble's classification, which type of galaxy has a small bulge and loose, widely spread, poorly defined spiral pattern?
A) SO B) S9 C) Sa D) Sc E) SBw