Which of the following are characteristics of a mass in simple harmonic motion? I. The motion repeats at regular intervals. II. The motion is sinusoidal. III. The restoring force is proportional to the displacement from equilibrium
A) I and II only
B) I and III only
C) II and III only
D) all of the above
E) none of the above
D
Physics & Space Science
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What did Harlow Shapley study in order to deduce the Milky Way's size and the Sun's position in it?
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Fill in the blank(s) with correct word
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A 10-m uniform beam weighing 100 N is supported by two vertical ropes at its ends. If a 400-N person sits at a point 2.0 m from the left end of the beam, what is the force that each rope exerts on the beam?
What will be an ideal response?
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Explain how energy is generated inside a planet and how it is transported out of a planet
What will be an ideal response?
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