Explain what happens when the angular speed of the coil in an electric generator is increased
What will be an ideal response?
When the angular speed of the coil in an electric generator is increased, the rate at which the magnetic flux changes increases as well. As a result, the magnitude of the induced emf produced by the generator increases. Of course, the frequency of the induced emf increases as well.
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Work done within an isolated system can increase the energy of the system
a. True b. False Indicate whether the statement is true or false
A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5 m/s2 53° north of west. Which of the following is correct?
a. R = 0.29 km, and the car's speed is increasing. b. R = 0.23 km, and the car's speed is decreasing. c. R = 0.23 km, and the car's speed is increasing. d. R = 0.29 km, and the car's speed is decreasing. e. R = 0.29 km, and the car's speed is constant.
A particle (charge = 5.0 ?C) is released from rest at a point x = 10 cm. If a 5.0-?C charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
a. 1.6 J b. 2.0 J c. 2.4 J d. 1.2 J e. 1.8 J
Water held tightly to sediment grains is called
What will be an ideal response?