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A ball of mass 0.30 kg is fired with velocity 160 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to friction. What fraction of the ball's initial kinetic energy is stored in the spring?
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. What is the weight of the bananas in newtons
What is momentum of a truck speeding down the highway at a given instant? Discuss how the momentum is changed if the truck loses some of its cargo while maintaining the same velocity.
What is the maximum speed with which a 1060kg car can round a turn of radius 75m on a flat road if the coefficient of static friction between tires and road is 0.80.
A 21 kg solid door is 220 cm tall, 94 cm wide. What is the door's moment of inertia for rotation about the vertical axis inside the door, 17 cm from one edge.
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 550 kg. Find the kinetic energy stored in the flywheel
35.0g of copper pellets are removed from a 300?C oven and immediately dropped into 90.0mL of water at 25.0?C, What will the new water temperature be
A draw bridge of length L is being held up by an axel at its pivot and by a chail that is also of length L. The drawbridge has uniform mass. What is the minimum angle to shoot an arrow
What is the total negative charge, in coulombs, of all the electrons in a small 1.05{\rm g} sphere of carbon? One mole of C is 12.0{\rm g} , and each atom contains 6 protons and 6 electrons.
If the surface area of a human is 1.7 m^2 and each square inch of skin contains 75 pressure sensors
A 14 g ball of clay travelling east at 3.0 m/s collides with a 30 g ball of clay travelling north at 2.00m/s. What are the speed and the direction of resulting 44 g ball of clay.
A physicist\'s left eye is myopic (i.e., nearsighted). This eye can see clearly only out to a distance of 21 cm. what is the power in Diopters
A magnifying glass of focal length 150. mm is used to examine an old manuscript. What is the maximum magnification given by the lens
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