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A volleyball is spiked so that its incoming velocity of +2.71 m/s is changed to an outgoing velocity of -20.1 m/s. The mass of the volleyball is 0.350 kg. What is the magnitude of the impulse that the player applies to the ball?
A steel rod (? = 7860 kg/m3) has a length of 2.19 m. It is bolted at both ends between immobile supports. Initially there is no tension in the rod, because the rod just fits between the supports. Find the tension that develops when the rod loses 3..
q1. a force vector points at an angle of 50.6deg above the x axis. it has a y component of 280 newtons. calculate the
a 5.0 micro c charge experiences a 0.45- n force in the positive direction. if this charge is replaced with a -2.7
A baseball coach shouts loudly at an umpire standing 3.8 meters away. If the sound power produced by the coach is 2.2 × 10?3 W, what is the intensity of the sound when it reaches the umpire? Answer in units of W/m2.
When a battery is connected to the plates of a 2.00-µF capacitor, it stores a charge of 30.0 µC. What is the voltage of the battery
a what supports a white dwarf from further collapse? b why cant a white dwarf have mass greater than 1.4m? c what
A large air conditioner has a resistance of 9.0 ohms and an inductive reactance of 13 ohms. Find the average power consumed by the air conditioner
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
You push a block with a constant force of magnitude 12.5N for adistance of 10 meters. The block weighs 10 kg, and startsfrom rest. What is its final velocity
A block, on a frictionless surface, is pulled horizontally by two opposing forces, F1 = 3 N to the left and F2 = 5 N to the right. What are the magnitude and direction of a third force
An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. What was the tension in the cable when the craft was being lowered to the seafloor
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
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