If the change in wavelength is less than zero, then the radial velocity tells you that the star is moving _______________ you
a. parallel to b. away from
c. towards d. in circles around
c
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Power: The circuit power factor of an RC circuit is 0.620. The rms value of the ac voltage applied to this signal is 120 V and the impedance is 200 ?. What is the average power of this circuit?
A. 44.6 W B. 89.2 W C. 60.0 W D. 0.620 W E. 124 W
Suppose that at a certain time a quanton has the (unrealistic) wave function shown below. 
If we were to perform an experiment to locate the quanton, what is the probability that the result will be ? 1 nm? (Assume that ? (x) = 0 at all points outside the picture.)
A. 1/8 B. 3/8 C. 1/12 D. 1/4 E. 5/12
Conservation of angular momentum means that a spinning body tends to:
A) fly apart. B) slow down. C) wobble into an eccentric orbit. D) gravitationally collapse. E) keep spinning.
Jane and Jake are looking at what happens to body 1 of mass m and body 2 of mass 2m, initially at rest, when equal forces are applied separately to the two bodies. Jake says that equal forces applied for equal times do equal amounts of work on the two bodies. Jane says that the two forces do equal amounts of work only if the two bodies move equal distances in the direction of the forces. Which
one, if either, is correct? a. Jake, because the speed of body 1 is half the speed of body 2, but m1v1 = m2v2. b. Jane, because work does not depend on mass, only on force times distance. c. Jake, because all bodies travel equal distances when equal forces are applied for equal times. d. Jane, because it takes the same time for all bodies to travel equal distances when equal forces are involved. e. Neither, because we can't compare the amounts of work done on bodies of different mass.