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A Hooke's-law spring of spring constant 4900 N/m is compressed by 0.02 m. This spring, inside a toy gun, is used to ?re a 0.050 kg bullet directly upwards. How high does the bullet go (relative to its position when the spring was compressed)? (Neglect air friction and other such complications.)
A .005 kg block having a velocity of 500 m/s hits a 5 kg wooden block at rest on a horizontal at an angle of 30 degrees from the horizontal
If the balloon can barely lift an additional 2900N of passengers, breakfast, and champagne when the outside air density is 1.23kg/m3, FIND the average density of the heated gases in the envelope
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
A 5.1- kg concrete block rests on a level table. A 3.6- kg mass is attached to the block by a string passing over a light, find the coefficient of friction between the block and the table
An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man
A bullet is fired through a board 7.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board, Find the total time the bullet is in contact with the board
A space craft is designed to be rotating column, in order to simulate artifical gravity. find angular frequency must be maintained to simulate surface gravity
A proton is shot at 5 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
A 45.50 cm diameter disk rotates with a steady angular acceleration of 2.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.30° with the positive x-axis at..
A spaceship moves away from Earth at a speed 0.297 c, Determine the speed of the shuttle relative to Earth
A cart of mass M = 1.2 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.5 kg. The cart is released from rest, allowing it to roll, pulled by falling h..
Find the rotational frequency of the wheel.
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