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A pitcher throws a 0.15 kilogram ball so that it crosses home plate horizontally with a speed of 20 m/s. The ball is hit straight back at the pitcher with a final speed of 29 m/s. (Assume the direction of the initial motion of the ball to be positive.)
(a) Estimate the impulse delivered to the ball?
kg•m/s
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest att = 0. what is the amplitude of the ossilation
A train 350 m long is moving on a straight track with a speed of 84.8 km/h. determine how long the train blocked the crossing
A stone is dropped from the top of a building. if it takes 3 seconds for the stone to drop to the ground, (a) calculate the height of the building, (b) with what speed will the stone hit the ground?
A sinusoidal traveling water wave has a wavelength of 25 cm and a frequency of 0.60 Hz. What is the phase speed of this wave
A positive point charge of magnitude 2.5 μC is at thecenter of an uncharged spherical conducting shell of inner radius60 cm and outer radius 90 cm. Find the electric field everywhere
If the average velocity of an object is nonzero in some finite time interval, which of the following must be true during this interval? (Select all that apply.)
The drive train of a bicycle includes wheels 67.3 cm indiameter and pedal cranks 17.5 cm long. Calculate the angular speed of the bicycle wheels
question1there are two identical vessels a and b of volume v each one empty and other containing the block of wood of
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a pump for a power plant takes in saturated water at 1.5 psi and boosts its pressure to 1500 psi. the pump has an
q1. a spaceship of mass 2.50806 kg is to be accelerated to a speed of 0.820c.a what minimum amount of energy does this
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