The amount of current produced by electromagnetic induction depends on the
A) amount of induced voltage.
B) resistance of the circuit to which it is connected.
C) both of these
D) none of the above
Answer: C
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The work done on an ideal gas system in an isothermal process is -400 J. What is the change in internal (thermal) energy of the gas?
A) 0 J B) -400 J C) 400 J D) 200 J
A person's eye lens is 2.8 cm away from the retina. What must the focal length of this lens be in order for an object placed at the far point of the eye to focus on the retina?
A) -2.8 cm B) 2.8 cm C) -2.4 cm D) 2.4 cm E) 2.2 cm
The outflow channels on Mars indicate a flood period in the history of Mars. During this time, based on the width and depth of the remaining riverbed, it is thought that the flow rate must have been
A) just a small trickle, barely more than a stream of water. B) moderate, about the flow rate of the Ohio River. C) fairly large, about the flow rate of the current Colorado River. D) significantly large, about the flow rate of the Amazon River. E) enormous, as much as 100 times the flow rate of the Amazon River.
How much time does it take a beam of light to travel 2.9 km through space? (c = 3.0 × 108 m/s)
A) 9.7 s B) 9.7 ms C) 9.7 ?s D) 9.7 ns E) 9.7 ps