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Question: A pyramid has a square base and four faces which are equilateral triangles. A charge Q is placed on the center of the base of the pyramid. What is the net flux of electric field Fe emerging from one of the triangular faces of the pyramid? Express your answer in terms of Q and e0.
A bucket of mass m is tied to a massless cable that is wrapped around the outer rim of a frictionless uniform pulley of radius R. what must be the moment of inertia of the pulley
An oil droplet with 15.0 excess electrons is observed between two parallel electrodes spaced 14.0mm apart. What is the radius of the droplet
A missile is shot straight up into the air. At the peak of its trajectory, it breaks up into three pieces of equal mass, What is the angle of the remaining piece
A 50g marble moving at 2.2m/s strikes a 30g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. What is the speed of the first marble
0.0023 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2, find the electric field energy density between the plates
Suppose you wish to lean a 3.00 m ladder against a smooth, vertical wall. The ladder's center of gravity is 2/3 of length from the top. If the coefficient of static friction between the ladder and the floor is 0.60, what is the largest angle ladde..
A hockey puck of mass m = 150 g is attached to a string that passes through a hole in the center of a table, what speed must the hockey puck have
Calculate the force needed to stop the downward motion of a jogger's leg, if his leg has a mass of 12.0 kg, a speed of 6.00 m/s
if a particle undergoes simple harmonic motion (SHM) withamplitude 0.25m, what is the total distance it travels in one period
A man with mass 70.0 kg stands on a platform withmass 25.0 kg. He pulls on the free end of a rope thatruns over a pulley on the ceiling and has its other end fastened tothe platform. What is the acceleration of the rope relativeto him
A ball is thrown straight up from a height of 1.56m above the ground and reaches a maximum height of 8.35m before falling to the ground. What the calls total time in the air
A 20kg hollow plastic sphere with a diameter of 130cm is used as a float to support an iron block in the water. What is the mass of the iron block
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