A 2.00 kg mass is located at (4.00 m, 0.00 m, 0.00 m) and a 4.00 kg mass is located at (0.00 m, 3.00 m,0.00 m). If this system of masses rotated about the X-axis perpendicular to the Z-Y plane, then the moment of inertia of this system is
A. 23 kg 
B. 28 kg
C. 33 kg
D. 36 kg
E. 41 kg
D. 36 kg
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An interpretation of the photoelectric effect is that:
1.Light is emitted only when electrons change orbits. 2.Light has a wavelike character. 3.Light is absorbed in quanta of energy E = h? 4.Electrons have an associated wave having wavelength ? = h/p. 5.Photons must have some minimum energy to penetrate a material. 6.More than one of the above
This figure shows the force on a 0.1-kilogram mass at various distances from Earth. Notice that the force decreases as the square of the distance. Now, consider satellites A and B, both circling Earth. If A has ten times the mass of B but B is 1/10 of the distance to the center of Earth as is A, what is the gravitational force on A relative to that of B due to Earth?
a. 1/10 the amount. b. The two are equal. c. 10 times as much. d. 1/100 times as much. e. 100 times as much.
General Questions: An object is moving with constant non-zero velocity. Which of the following statements about it must be true?
A. A constant force is being applied to it in the direction of motion. B. A constant force is being applied to it in the direction opposite of motion. C. A constant force is being applied to it perpendicular to the direction of motion. D. The net force on the object is zero. E. Its acceleration is in the same direction as it velocity.
A resistor and an inductor are connected in series to a battery. The battery is suddenly removed from the circuit and replaced by a wire to complete the circuit
The time constant for of the new circuit represents the time required for the current to decrease to A) 75% of the original value. B) 25% of the original value. C) 63% of the original value. D) 37% of the original value. E) zero.