If you change the magnetic field inside a closed loop of wire, you induce in the loop
A. all of these
B. a current
C. a voltage
D. an electric field
Answer: A. all of these
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Molecular Speeds: What is the average translational kinetic energy of a nitrogen molecule in the air in a room in which the air temperature is 17°C? The Boltzmann constant is 1.38 × 10-23 J/K.
A. 6.01 × 10-21 J B. 4.00 × 10-21 J C. 5.00 × 10-21 J D. 7.00 × 10-21 J E. 9.00 × 10-21 J
Sagittarius A* was first noted due to its strong ________ emissions
A) radio B) X-ray C) ultraviolet D) infrared E) gamma ray
What makes pink ink pink?
a. refraction b. selective absorption c. dispersion d. none of the above
A circuit consists of three identical lamps connected to a battery as in Figure OQ28.14. The battery has some internal resistance. The switch S, originally open, is closed. What happens to the potential difference across lamp C?