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An electron initially at rest is accelerated between two parallel plate 2.000 cm apart. The pace between the plates is a vacuum. The potential difference across the plates is 300.0 V.
What kinetic energy does the electron have when it hits the positive plate?
If you double a blackbody's temperature, by what factor does its radiated power increase
A spaceship with a proper length of 101 m passes an observer at a speed of 0.82770c. What is the length of the ship as seen by the observer
A single-turn circular loop of radius 5.5 cm is to produce a field at its center that will just cancel the earth's field of magnitude 0.7
A rubber ball of mass 149 g is thrown directly at a wall with a speed of 4.7 m/s. what is the magnitude of the impulse imparted by the wall on the ball
q1. a 35.0-kg child swings in a swing supported by two chains each 2.90 m long. the tension in each chain at the lowest
A train is travelling up a 4.0 incline at the speed of 3.25 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily.
A car of mass 1290 kg rests on a hydraulic lift with a piston of radius 0.22 m that is connected to a second piston of radius 0.027 m. what is the force at the second piston
A horse walks in a 24 ft diameter circle, making 144 trips around the circle in one hour. Using the currently accepted value of 746 watts for 1 horsepower, calculate the force in pounds with which the horse must have been pulling.
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
Illustrate what was its angular acceleration (assumed constant) and what was its final angular speed in rpm?
A light bulb has a resistance of 260 . It is connected to a standard wall socket (120 V rms, 60.0 Hz, Determine the rms current in the bulb
You are kicking a ball in the air that is sitting on the ground. You are told the initial velocity and the distance to a wall of a known height. how fast the ball is going when it reaches the walls position
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