The highest high tides and the lowest low tides occur when the Moon is
A. full or new.
B. full only.
C. new only.
D. first and third quarter.
Ans: A. full or new.
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The total energy stored in simple harmonic motion is proportional to the
A) amplitude. B) square of the spring constant. C) reciprocal of the spring constant. D) square of the amplitude. E) frequency of motion.
What is created by the fusion of three helium nuclei?
B) oxygen C) carbon D) nitrogen E) iron
A 40-kg crate is being lowered with a downward acceleration is 2.0 m/s2 by means of a rope
(a) What is the magnitude of the force exerted by the rope on the crate? (b) What would be the magnitude of the force exerted by the rope if the crate were being raised with an acceleration of 2.0 m/s2?
A car accelerates from 5.0 m/s to 21 m/s at a constant rate of 3.0 m/s2 How far does it travel while accelerating?
A) 41 m B) 69 m C) 117 m D) 207 m