Faraday's law describes
A) electromagnetic induction.
B) the connection between current, voltage, and resistance.
C) the attraction and repulsion of magnetic poles.
D) the force between magnetic poles.
E) all of the above
Answer: A
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Which of the following statements does not use the term angular size or angular distance correctly?
A) The angular distance between those two houses in the distance is 30 degrees. B) The angular distance between those two bright stars in the sky is about 2 meters. C) The angular size of the Sun is about the same as that of the Moon. D) You can use your outstretched hand against the sky to estimate angular sizes and angular distances.
A car weighing 5000 N is traveling along a straight level road powered by a forward drive force of 500 N. The force of air resistance is 200 N, and rolling resistance is 100 N. The net force on the car is
A) 200 N forward. B) zero. C) 300 N backward. D) 5000 N downward. E) 500 N forward.
For the wave described by y = 0.02 sin (kx) at t = 0 s, the first maximum at a positive x coordinate occurs where x = 4 m. Where on the positive x axis does the second maximum occur?
a. 20 m b. 18 m c. 24 m d. 28 m e. 16 m
A 2-kg ball is moving with a constant speed of 5 m/s in a horizontal circle whose radius is 50 cm. What is the acceleration of the ball?
A) 0 m/s2 B) 10 m/s2 C) 20 m/s2 D) 50 m/s2 E) 500 m/s2