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At a carnival, you can try to ring a bell by striking a target with a 9.68-kg hammer. In response, a 0.358-kg metal piece is sent upward toward the bell, which is 5.36 m above. Suppose that 18.6 percent of the hammer's kinetic energy is used to do the work of sending the metal piece upward. How fast must the hammer be moving when it strikes the target so that the bell just barely rings?
Two rays leave a point source and strike a front-silvered mirror, making angles with the normal of 30.0° and 52.5°, respectively. What is the angle between the two reflected rays
sample of an ideal gas is taken through the cyclic process abca at point a, T = 385 K. How many moles of gas are in the sample, What is the net energy added to the gas during the cycle
You are standing 3.0 m from a convex security mirror in a store. Estimate the radius of curvature of the mirror
A system consisting of two positive particles is altered by an outside force so that its potential energy increases by 5.4 ?J. What is the work done by the outside force
A sled of mass 5.37 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.13 m/s. At what speed does the sled move once the book is on it
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 2.1 minutes
You are driving home from school steadily at 94 km/h for 150 km. It then begins to rain and you slow to 63 km/h. You arrive home after driving 3 hours and 30 minutes. How far your hometown from school and what is was your average speed.
A flywheel with a radius of 0.310m starts from rest and accelerates with a constant angular acceleration of 0.660rad/s2, Compute the magnitude of the tangential acceleration
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 50.6 m when its initial speed is 79..
A light ray is incident upon a plane interface between two materials. what is the refracted angle (in degrees) in that material
A 37-kg girl is bouncing on a trampoline. All through a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 215 J from 430 J. How high does she rise during this interval? Avoid air resistance.
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