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A 620g object traveling at 2.1m/s collides head-on with a 320g object traveling in the opposite direction at 3.8m/s. If the collision is perfectly elastic, what is the change in the kinetic energy of the 620g object?
Because of your knowledge of physics, you head your boat 44° west of north and have a velocity of 8.0 m/s due north relative to the shore. Illustrate w hat is the velocity of the current? What is your speed relative to the water.
He would like a prescription for contact lenses to serve the similar purpose. What is the correct contact lens prescription, in diopters.
Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
A nonconducting disk of radius a lies in the z = 0 plane with its center at the origin. The disk is uniformly charged and has a total charge Q. Find Ez on the z axis at the following positions.
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter- deep lake. When the sun is 30 degrees above the horizon, how long will the shadow of the mast be on the bottom of the lake?
A 13.0-g wad of sticky clay is hurled horizontally at a 110-g wooden block initially at rest on a horizontal surface. The clay sticks to the block.what was the speed of the clay immediately before impact
A large tank is filled with methane gas at a concentration of 0.690 kg/m3. What is the cross-sectional area of the pipe
The maximum speed of a 2.5-kg mass attached to a spring is 0.55 m/s, and the maximum force exerted on the mass is 11 N. What is the amplitude of motion for this mass
A ball of mass 2.4 kg hangs at the end of a string 1.4 m in length from the ceiling of a room. What is the gravitational potential energy of the ball relative to the floor
A horse canters away from its trainer in a straight line, moving 150m away in 14 sec. It then turns abruptly and gallops halfway back in 4.5 sec.
a rifle with a mass of 1.2kg fires a bullet with a mass of 6.0g (0.006kg). What is the momentum of the bullet after the rifle is fired
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, Determine the centripetal acceleration of the moon
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