A uniform cylinder of radius R, mass M, and length L rotates freely about a horizontal axis parallel and tangent to the cylinder, as shown below. The rotational inertia of the cylinder about this axis is
?
?
A.
.B.
.C.
D.
.E.
.Answer: D
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A current loop is placed in a magnetic field which is coming out of the board, as indicated. Will the loop tend to rotate clockwise, counterclockwise, or not at all about a vertical axis?
A. clockwise B. counter-clockwise C. not at all
The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
A. A B. B C. C D. D E. C and D
When you are in a high-flying jet plane, does either your weight or your mass differ from their normal value as measured on the ground?
A) No, both your weight and your mass are exactly the same as on the ground. B) Both your weight and your mass are slightly reduced. C) Both your weight and your mass are slightly increased. D) Your weight is slightly reduced, but your mass is unchanged. E) Your weight is slightly increased, but your mass is unchanged.
A constant volume and mass of helium gas at 77°C is heated so that the pressure of the gas doubles. What is the new temperature of the gas in Celsius degrees?
a. 154°C b. 273°C c. 427°C d. 700°C