Doubling the displacement from equilibrium of an object in simple harmonic motion will bring about a change in the magnitude of the object's acceleration by what factor?
a. 4.0
c. 1.0
b. 2.0
d. 0.5
B
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Which of the following has the largest momentum relative to Earth?
A) a tightrope walker crossing Niagara Falls B) a pickup truck speeding along a highway C) a Mack truck parked in a lot D) a dog running down the street
Suppose that a symmetry argument of some kind tells us that the electric field in a certain region points in the +y direction and has a magnitude that depends only on y. For which of the following gaussian surfaces would it be easiest to calculate the net flux of the electric field?
A. A cubical surface oriented so that two opposite faces are perpendicular to the y axis. B. A spherical surface. C. A cylindrical can-like surface oriented with its central axis perpendicular to the y axis. D. A cylindrical can-like surface oriented with its central axis parallel to the y axis. E. A cone-like surface oriented with its central axis parallel to the y axis.
The significance of a Carnot engine is that
A. all automobiles operate on the Carnot cycle B. it has the maximum possible efficiency of any engine operating between the same two temperatures C. it violates the second law of thermodynamics D. it violates the first law of thermodynamics
Two different isotopes of the same element have
A) the same chemical properties, and also the same properties in nuclear processes. B) different chemical properties, but the same properties in nuclear processes. C) different chemical properties, and also different properties in nuclear processes. D) the same chemical properties, but different properties in nuclear processes. E) None of the above.