A force of 12 N acts on a 2.0-kg object through a parallel distance of 1.5 m. How much work is done on the object?
18 J
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Which of the following statements about lunar phases is true?
A. The full Moon sometimes rises around midnight B. The time between new Moons is two weeks. C. It is possible to have two full Moons during January but not usually during February. D. It is possible to have two full Moons during November but not during December.
A hockey puck slides off the edge of a table at point A with an initial velocity of 20.0 m/s and experiences no air resistance. The height of the tabletop above the ground is 2.00 m
(a) What is the speed (not the velocity) of the puck just before it touches the ground? (b) What is the distance between point A and the point where the puck hits the ground? What will be an ideal response?
Suppose that Al the physicist observes a single radioactive nucleus. The length of time until that particular nucleus decays is
A) unpredictable because of the practical difficulties of obtaining all the information needed to make the prediction. B) unpredictable because of fundamental uncertainties arising from quantum physics C) predictable from the known half-life of the nucleus. D) unpredictable because of fundamental uncertainties arising from Newtonian physics. E) predictable, provided Al knows the precise nuclear state of this nucleus.
Fourier discovered that music can be
A) a series of non-periodic waves. B) reduced to simple sine waves. C) a binary code. D) pulses of the same amplitude.