If a floating log is seen to bob up and down 15 times in 1.0 min as waves pass by you, what are the frequency and period of the oscillation?
What will be an ideal response?
0.25 Hz, 4.0 s
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What value of B should be used in a velocity selector to separate out 2.0-keV protons if E is fixed at 80 kV/m?
a. 0.18 T b. 0.11 T c. 0.15 T d. 0.13 T e. 0.23 T
Which of the Galilean moons is essentially a dirty, icy rock?
a. Titan b. Io c. Ganymede d. Phoebe e. Callisto
A 83 g steel ball is released from rest and falls vertically onto a steel plate. The ball strikes the plate and is in contact with it for 0.5 ms. The ball rebounds elastically, and returns to its original height
The time interval for a round trip is 4.00 s. In this situation, assume the plate does not deform during contact. The maximum elastic energy stored by the ball is closest to: A) 16 J B) 24 J C) 32 J D) 48 J E) 64 J
The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects
A. to the far point of the eye. B. to the near point of the eye. C. to the retina of the eye. D. none of the above.