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A tennis ball is traveling North towards a tennis racket with kinetic energy equal to 5 J. After contact with the racket, the tennis ball travels South, again with kinetic energy equal to 5 J. During this process, What is the change in kinetic energy?
Two identical containers are adjacent to each other. They both have Volume =3.5 L and Pressure = 1atm. One contains O2, a diatomic gas, (molar mass 32g/mol) at initial temperature 250K.
An unstable atomic nucleus of mass 1.92 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.00 10-27 kg, Find the velocity of the third particle
In an insulated vessel, 260 g of ice at0°C is added to 630 g of water at19.0°C. What is the final temperature of the system? How much ice remains when the system reaches equilibrium?
A potter's wheel moves uniformly from rest to an angular speed of 0.23 rev/s in 31.0 s. Find its angular acceleration in radians per second
If a second plane with the same charge density is placed parallel and a distance d above the first one, what is the electric field between the two planes
A laser beam is incident at an angle of 43.0° to the vertical onto a solution of corn syrup in water. If the beam is refracted to 25.44° to the vertical, what is the index of refraction of the syrup solution?
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +3.8 m/s, grabs him. determine the mass of the receiver
A neutron star has a mass of 2.20 × 10^30 kg (about the mass of our sun) and a radius of 5.20 × 10^3 m. Assume an object falls from rest near the surface of such a star. How fast would it be moving after it had fallen a distance of 0.0083 m.
A crate of mass 10.0 kilogram is pulled up a rough incline with an initial speed of 1.47 m/s. Calculate what is the change in kinetic energy of the crate
A fan at a rock concert is 50.0{\rm m} from the stage, and at this point the sound intensity level is 109{\rm dB}. How much energy is transferred to her eardrums
A rock of mass 43 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 257 N. What is the magnitude of the acceleration of the rock?
A fuel leak is discovered at this point, and crew calculates that the plane can safely fly no more than 170 km before an emergency landing should be attempted. The only appropriate location for an emergency landing is 100 km north of their current po..
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