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A ball thrown straight up at an initial speed of 14.0m/s reaches a maximum height of 7.6m. What fraction of the ball's initial kinetic energy is dissipated by air resistance as the ball moves upward?
Two football players are moving toward each other in a straight line. Number 56 has a mass of 120 kg, Determine the velocity (magnitude and direction) of players, after the collision, before they hit the ground
A cube with edge 3.0 cm floats with 2/3 of its volume below the surface of the water. What is the mass of the block
A cowboy at a dude ranch fills a horse trough that is 1.50m long, 65cm wide and 45cm deep. He uses a 2cm diameter hose from which water emerges at 1.50m/s.
a sled is moving down an incline plane, the mass of the sled is 40 kg. the angle is 35 degrees, coefficient of kinetic friction is 0.3. Find acceleration of the sled
a 2 kg ball moving at 3 m/s hits a wall and bounces off. immediately after the collision it moves at 3 m/s in the opposite direction. what is the magnitude of the change in the objects momentum
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure in pascals
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the horizontal component of force produced by the wall
A plane sinusoidal electromagnetic wave has a magnetic field amplitude of 5.00 x 10^-5 T. What is the electric field amplitude of the wave
A m = 2.6 kg object moving at v = 16 m/s collides with a stationary 2.0 kg object, how far along the inclined plane will the combined system travel
In a graphing calculator, there are four AAA batteries, which together provide a potential difference of 1.5 V and a total of 6.0 W·h of energy. what was the average current through the calculator
A cub scout makes a simple microscope by placing two converging lenses of +18.0 D at opposite ends of a 27.9-cm-long tube. What is the tube length of the microscope
A 8.0 µC point charge and a 9.0 µC point charge are a distance L apart. Where should a third point charge be placed so that the electric force on that third charge is zero?
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