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A solid conducting ball with charge +2Q is placed inside aconducting shell. The conducting shell carries a charge of-7Q, and has a greater radius than the conducting ball. Inequilibrium, how much charge is on the outer surface of the shell?
A 6 kg block, starting from rest, slides down a frictionless incline of length 2 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block 0.5 vf.
A rifle with weight of 30N fires a 5.0g bullet with a speed of300m/s. find the recoil speed ofthe man and rifle
A volleyball is spiked so that it has an initial velocity of 14 m/s directed downward at an angle of 45 degrees below the horizontal. What is the horizontal component of the ball's velocity
The water level in a vertical glass tube 1.300 m long can be adjusted to any position in the tube. What is the greatest depth of water for which there will be resonance in the air in the tube
The alarm at a fire station rings and a 79-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.3 m). Just before landing, his speed is 1.2 m/s. What is the magnitude of the kinetic frictional force exerted on the fi..
Sand falls from a hopper onto a moving conveyor belt at a mass rate of 0.68 kg/s. The belt moves at constant velocity 9.00 m/s. What is the force on the belt that is required to keep the velocity constant? Assume the sand does not slip as it lands on..
Light of wavelength 400 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
A horizontal spring-mass system has low friction, spring stiffness 155 N/m, and mass 0.6 kg. What is the maximum stretch during the motion
An electron ( mass = 9.11×10?31 ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is 1.79 away. It reaches the grid with a speed of 2.96×106 . (You can ignore the gravitati..
Consider electrons accelerated to a total energy of 20.0 GeV in the 3.00-km-long Stanford Liinear Accelerator. What is the factor ? for the electrons? What is the electrons' speed at the given energy?
A 150? resistor is across a 24.0V battery. Find the energy supplied by the battery in 4min
A massless spring with spring constant 9.60 N/m hangs vertically. A body of mass 2.70 kg is attached to its free end and then released. Calculate the amplitude of the motion and frequency
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