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A basketball player makes a jump shot. The 0.600 kg ball is released at a height of1.90 m above the floor with a speed of7.00 m/s. The ball goes through thenet 3.10 m above the floor at a speed of 3.60 m/s. What is the work done on the ball by air resistance, a nonconservative force?
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A 40.6 kg keg of beer rolls down a 3.40 m long plank leading from the flatbed of a truck 0.880 m above the ground
Starting from rest, a 12-cm-diameter compact disk takes 2.5s to reach its operating angular velocity of 1500rpm. How much torque is applied to the disk
An electric field of 9.50 105 V/m is desired between two parallel plates, each of area 44.5 cm2 and separated by 2.45 mm of air. What charge must be on each plate
We are going to treat this approximatly as an elastic collision. What are these final velocities in the reference frame of the ground
A helicopter is ascending vertically with a speed of 9 m/s. At a height of 200 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach ground.
A chair of weight 75.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 41.0N directed at an angle of 41.0degree below the horizontal and the chair slides along the floor.
A uniform sphere and a uniform cylinder with the same mass and radius roll at the same velocity side by side on a level surface without slipping. What will be the percentage difference of the heights
An electron enters a region where the electric field is uniform, directed vertically downward, and has a magnitude of 700 N/C. This region of uniform field is 1. 5 cm long and 0. 7 cm high. Find the magnitude of the vertical deflection of the elect..
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.3 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west, what is the mass of the ball
You throw a 1 kg rock down a 5m-deep wishing well. It hits the water with a velocity of 7.5 m/s. How much work did air resistance do
A charge of +2q is fixed to one corner of a square, while a charge of -1q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of square, so the potential is zero at each of the two empty c..
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