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A photon of wavelength 0.72462 nm strikes a free electron that is at first at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision?
A 101-kg horizontal platform is a uniform disk of radius 1.97 m and can rotate about the vertical axis through its center. A 67.9-kg person stands on the platform at a distance of 1.19 m from the center and a 27.3-kg dog sits on the platform near the..
a charge of .4 mc is at -5 0 meters and a charge of -.6 mc is at 3 0 meters.a find the magnitude of the electric force
A soccer ball is kicked from the ground at an angle of ? = 60 degrees with respect to the horizontal, What is the total horizontal distance, (dm), in meters, traveled by the ball in the time, tm
In a perfectly inelastic collision, two identical 2kg objects collide head to head. What is the total linear momentum after collision
If the box is .6 meters below the level of a conveyor belt and.4 meters away from it, what must be the horizontal velocity of objects as they leave the conveyor belt
A person who is 1.7 m tall throws a ball with a speed of 4 m/s atan angle of 31 degrees above the horizontal. What are the x and y components of the velocity (in m/s) of the ball the instant before it strikes the ground?
A long cylindrical wire of radius R carries a current I. Let the z axis be a long the axis of the wire. The current density of the wire is j=1/pir^2. Find the current within the cross section of the wire or radius r
Two skaters, of mass mA = 60kg and mB = 90 kg, are skating toward each other at the same speed v = 4 m/s. What is the speed of skater A following the collision
A sudden gust of wind gives the boat an acceleration a, What is the boat's direction 6.4s later when the gust subsides
Ball 1, with a mass of 140 g and traveling at 12.0 m/s, collides head on with ball 2, which has a mass of 300 g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic
Two small metallic spheres, each of mass 0.30g, are suspended as pendulums by light strings from a common point, calculate the magnitude of the charge on each sphere
The figure is taken from a paper (Am J Sports Med 2004 32: 477) on injuries to the anterior cruciate ligament due to forces applied by the patella tendon. What is the horizontal force on the patella tendon
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