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An 80 kg person in outer space is at rest when he catches a 10 kg asteroid moving at 15m/s. What is the final velocity of the man who is holding the asteroid? If that same man used a tennis racket to deflect the asteroid directly back in its original direction with exact conservation of energy, what would be the velocity of the man after the collision?
A beam of parallel light, 1.50 mm in diameter passes through a lens with a focal length of 13.7 cm. What is the distance between the two lenses
An audio amplifier delivers to the speaker alternating voltage at audio frequencies. what is the time-averaged power transferred to it
A hockey player is standing on his skates on the frozen pond when an opposing player, moving with a uniform speed of 13 m/s, skates by with the puck. After 2.5 s, the first player makes up his mind to chase his opponent.
A 42-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 56.2 mm, What is the density of the plastic
What value does this give for the speed of sound in air. What is the speed of the ball at that point.
A block of mass m1 = 3 kg rests on a table with which it has a coefficient of friction µ = 0.67. A string attached to the block passes over a pulley to a block of mass m3 = 5 kg. The pulley is a uniform disk of mass m2 = 0.7 kg and radius 15 cm. A..
Find out the magnitude and direction of forces
The particle with energy E moves in positive direction toward the potential step Vo > E. Determine the probability to find the particle on the distance x from the potential step.
Calculate the electric field at the center of a square 52.5 cm on a side if one corner is occuppied by a +45.0 uC charge and the other three are occupied by -27.0 uC charge
An 68.0-m-long brass rod is struck at one end. A person at the other end hears two sounds as a result of two longitudinal waves, What is the time interval between the two sounds
What is the maximum amount of energy the incident electron can lose in elastically in this collision? What is left over energy of the electron.
A 92.0-kg astronaut and a 1200-kg satellite are separated from the space ship, and are both at rest with respect to the ship without any method of getting to the ship. how far away from the ship is the satellite
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