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The electron beam inside a television picture tube is 0.4 mm in diameter and carries a current of 55 µA. This electron beam impinges on the inside of the picture tube screen.
A) The electrons move with a velocity of 3.9 multiplied by 107 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance of 5.0 mm?
B) Each electron transfers its kinetic energy to the picture tube screen upon impact. What is the power delivered to the screen by the electron beam?
A solenoid (coil) has a radius of 7.2 cm, a length of 31.5 cm, and has 380 turns of wire. A current of 350 mA runs through the coil. Calculate the field strength inside the coil
The last piece has 4 times as much mass as each of the other pieces. Illustrate what is the magnitude of the velocity of the last piece?
If the energy that goes into evaporating one kilogram of water from Lake Michigan at 11.0 oC were used instead to raise, how high (in m) would it be lifted
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations (hypergravity) on test pilots and astronauts. In this device, an arm 8.84m long rotates about one end in a horizontal plane, and the..
Calculate the rest energy of an electron in joules and Calculate the rest energy of an electron in MeV (1MeV=1.60×10?13J)
water flows with soeed1 m/s from a small hole made at the bottom of a tank filled with water. find height of the tank
suppose that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand.
Portray how asynchronous simulation can be used to predict the motions of this system and outline the data structures that would be necessary to implement such a program.
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude - by using his pulse to time the period of swinging lamps, How long is the lamp chain
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
A long, straight wire carries a current of 48.9 A. The magnetic field produced by this current at a certain point is 7.80E-5 T. How far is the point from the wire
A spherical shell of radius R = 8.0 cm has a total charge Q = - 900nC uniformly distributed on its surface, Write the net electric field at the point P in unit vector notation
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