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A moving electron has kinetic energy K1. Aftera net amount of work W has been done on it, the electronis moving one-quarter as fast in the opposite direction. (a) Find W in terms of K1
If the balls are released from a height where the bottom of the basketball is at 0.781m above the ground, what is the absolute value of basketball's momentum just before it hits the ground.
A man wolks up a flight of stair, his power output is P. he runs up the same stairs with twice the speed. What's new power output
A hiker starts at his camp and moves the following distances while exploring his surroundings: 55.0 m north, 2.75x10^2 m east, Find his resultant displacement from camp
Two spherical shells have a common center. A -3.00 x10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 x10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitu..
A 200-N beam is held horizontally by a vertical steel cable at each end. The beam is 18 m long. A 650-N box sits 3.0 m from the left end. What is the tension in the right cable
q1. what do superstring theories try to elucidate?a. forces holding super clusters of galaxies togetherb. behaviour of
A woman on a bridge 83.3 m high sees a raft floating at a constant speed on the river below. calculate the speed of the raft
A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4 m down a q = 28° incline. The sphere has a mass M = 5.2 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere?
The thrust of a rocket is a gravitational force acting on the rocket the force of the exiting fuel gases on the rocket any force that is external to the rocket-fuel system a force that arises from the reduction in mass of the rocket-fuel system none ..
A 460 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, What is the tension in the main cable supporting the piano
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is ? = ?0x0/x, Determine the electric field at the origin
A paddle wheel frictionally adds thermal energy to an ideal monatomic gas in a sealed, insulated container. How many moles of gas must be present in this container
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