A 20.0-mH inductor is connected in series with a 100-? resistor at 1000 Hz. What is the phase angle of this circuit?
A) 90.0°
B) 51.5°
C) 38.5°
D) 0°
E) 45°
B
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A. Moment of inertia * velocity B. Mass * angular velocity C. Mass * velocity D. Moment of inertia * angular velocity
Which one of our 8 standard physical forms of energy is present in gasoline?
A) solar B) kinetic C) radiant D) thermal E) chemical
Starting from rest, a car accelerates down a straight road with constant acceleration a for a time t, then the direction of the acceleration is reversed, i.e., it is -a, and the car comes to a stop in an additional time t, the time for the whole trip being 2t. At what time, or times, is the average velocity of the car for the trip equal to its instantaneous velocity during the trip?
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Indicate whether the statement is true or false