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A baseball player pitches a fastball toward home plate at aspeed of 47 m/s. The batter swings, connects with the ball of mass141 g, and hits it so that the ball leaves the bat with a speed of39 m/s. Assume that the ball is moving horizontally just before andjust after the collision with the bat.
What is the magnitude of the change in momentum of theball?
What is the impulse delivered to the ball by the bat?
If the bat and ball are in contact for 0.001s, whatis the magnitude of the average force exerted on the ball by the bat?
Assume the ball leaves Sarah's hand a distance 1.5 meters above the ground, reaches a maximum height of 15.0 m above the ground, and takes 2.692 s to get directly over Julie's head. What is the speed of the ball when it leaves Sarah's hand? m/s 6)..
the potential difference between the accelerating plates of a tv set is about 25 kv. if the distance between the plates
The work function of a certain metal is ? = 3.05 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck's constant is: h = 4.1357×10-15 eVs.)
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. Determine the angle of the total acceleration relative to the radial direct..
Three charged particles are fixed to an x axis: Particle 1 of charge q1 = 2.1e-8 C is at position x=20 cm and particle 2 of charge q2 = 2.00q1 is at position x = 30 cm, particle 3 of charge q3 = -4.00q1 is at position x = 70 cm.
q1. a 8.9 kg mass is attached to a light cord that passes over a massless frictionless pulley. the other end of the
A box is hanging from a chain having a mass of 60 kg. The box has a mass of 78 kg. Find the tension in the top of chain and the bottom of the chain.
To make a simple microscope a student places two converging lenses of +20 D at opposite ends of a 34 cm long tube. What is the tube length of the microscope
An alpha particle (?) has a rest mass m = 6.64x10-27 kg. What is the kinetic energy K of the alpha particle at this speed
a blue car with mass mc 484 kg is moving east with a speed of vc 18 ms and collides with a purple truck with mass mt
A 40ton rail car and a 80ton rail car, initially at rest, are connected together with a giant but massless compressed spring between them. When released, What is the speed of the 40ton car relative to the ground
The bottom of a flat bottom aluminum boat has an area = 4 msquared and the mass of the boat is 80 kg. how much lower will the boat ride in the water
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