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Two identical pucks are on an air table. Puck A has an initial velocity of 2.5 m/s in the positive x-direction. Puck B is at rest. Puck A collides elastically with puck B and A moves off at 1.7 m/s at an angle of +60° above the x-axis. What is the speed and direction of puck B after the collision? (Let angles above the +x-axis to be positive and below to be negative.)
A small block is released from rest at the top of a frictionless incline. The block travels a distance 0.263 m in the first second after it is released
A child whose weight is 262 N slides down a 4.80 m playground slide that makes an angle of 49° with the horizontal. The coefficient of kinetic friction between slide and child is 0.09.
A particle with a mass of 7.43 multiply.gif 10-27 kg has a de Broglie wavelength of 8.37 pm. What is the particle's speed
Stan accelerates from a standing start at 2 m/s^2 and one second later Kathy accelerates from a standing start at the same position at 4 m/s^2. how long does it take Kathy to catch Stan
A disk of radius 10 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.2 rad/s2. compute the angular velocity of the disk
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
A weight is suspended from two ropes, one of which makes an angle #1 = 35 degrees and angle 2 = 155 degrees measured form the horizontal, Find the tension in each of the two ropes
A simple pendulum consists of a 4kg mass attached to a 3m long rope. At t=0 it is moving to the right at 0.4m/s. What is the angular frequency of the oscillation
One charged particle of -1.3 × 10-6 C is moving north with a velocity of 5 × 106 m/s. What force is exerted between the particles
5 moles of a monatomic gas has its pressure increased from 105 Pa to 1.5*105 Pa. calculate How much work is done by the gas
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 79.9cm, Calculate the weight of the rod, w
suppose that visible light enters a Plexiglas cube containing water at a 20o angle of incidence, travels through the water and exits the cube.
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