What must be exerted on an object to change the angular momentum?
a. Linear momentum
b. Torque
c. A force parallel to the motion
d. Inertia
b
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What is the symbol for the nuclide with 38 protons and 50 neutrons?
a. 
b. 
c. 
d. 
Consider an AC series circuit containing a coil, capacitor, and resistor. Doubling the frequency will change the circuit's impedance by what factor?
a. 2.0 b. 1.0 c. 1/2 d. Information is insufficient to determine answer.
Two thin layers of material with different indices of refraction are coated on a glass plate. The outer first material has n1 = 1.404, the inner second material has n2 = 1.176, and the glass has nglass = 1.62 . If light is incident from air on the first layer, what is the phase change relative to that of the first layer reflection for light that reflects from the glass?
a. 180° c. 360° b. 540° d. 0°
All organisms have finite lifetimes and eventually die. Which of the basic characteristics of life corrects for this?
A) energy utilization B) response to the environment C) evolutionary adaptation D) reproduction