Which thermodynamic law says that you cannot convert 100 percent of a heat source into mechanical energy?
A) first law of thermodynamics
B) second law of thermodynamics
C) third law of thermodynamics
D) law of increasing entropy
Ans: B) second law of thermodynamics
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An icy leftover planetesimal orbiting the Sun is
A) a comet. B) a meteor. C) an asteroid. D) a meteorite. E) possibly any of the above
The equation of motion of a particle undergoing simple harmonic motion in the y direction is y = (2.0 cm) sin(0.60 s-1 t). At time t = 0.60 s determine the particle's (a) position, (b) velocity, and (c) acceleration
What will be an ideal response?
A simple ac circuit consists of an inductor connected across the terminals of an ac power source. If the frequency of the ac source is decreased by a factor of four, what happens to the reactance of the inductor?
A) It increases by a factor of eight. B) It decreases by a factor of four. C) It increases by a factor of four. D) It increases by a factor of two. E) It decreases by a factor of eight.
The alpha particle has twice the electric charge of the beta particle but deflects less than the beta in a magnetic field because it
A) moves much slower. B) moves much faster. C) has much more inertia. D) has much less inertia.