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An electron is accelerated from rest through through a potential difference of 35,000 V. What is the electron's kinetic energy in Joules?
A ball rolls off the edge of a table with a horizontal velocity v m/s. What is the initial speed of the ball
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. What is the index of refraction of the reflecting material
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
A small but measurable current of 7.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm, calculate the current density and electron drift speed
A 0.347-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron
Calculate the dc voltage applied to the circuit.
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
An engine flywheel initially rotates counterclockwise at 5.03 rotations per second. Define counterclockwise rotation as positive
Two converging lenses are separated by 23.20 cm. The focal length of each lens is 12.20 cm. Determine the final image distance relative to the lens on the right
75-kg person stands on a 6.0-m-long 47-kg ladder. The ladder is tilted 60° above the horizontal. The coefficient of friction between the floor and the ladder is 0.42. The coefficient of friction between the wall and the ladder is zero.What dis..
The silk has a density of 1300kg/m3. if you tap the branch and send a vibration down the thread how long does it take to reach the spider
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