A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The acceleration is zero
a. True
b. False
Indicate whether the statement is true or false
False
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The molar specific heat of a diatomic ideal gas at constant volume is Cv = 5/2 R. What is the heat needed to heat 28.00 g of air from 20.00
to 85.00
?
A. 1,350 J B. 2,890 J C. 1,753 J D. 1,540 J E. 1,443 J
A 90.0 kg person is sitting in a boat at rest with a mass of 100 kg. In the boat is a stone with a mass of 5.00 kg. The person throws the stone at 4.00 m/s horizontally in the NORTH direction. The kinetic energy of the boat and person after the throwing of the stone is
A. 5.20 J. B. 40.0 J. C. 1.05 J. D. 2.75 J.
In the context of the rings of Saturn, the F ring is clumpy and sometimes appears braided because:
A) of two shepherd satellites. B) resonances with moons remove the gaps in the ring. C) straying particles are gravitationally pulled out of the ring. D) shepherd satellites are absent.
What do we mean when we say that two light rays striking a screen are in phase with each other?
A) When the electric field due to one is a maximum, the electric field due to the other is also a maximum, and this relation is maintained as time passes. B) They are traveling at the same speed. C) They have the same wavelength. D) They alternately reinforce and cancel each other.