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A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 9.0 m/s at the end of 9.0 s. At that instant, the kinetic energy of the system is 80 J and each mass has moved a distance of 40.5 m. Determine the values of m1 and m2.
Suppose you wish to lean a 3.00 m ladder against a smooth, vertical wall. The ladder's center of gravity is 2/3 of length from the top. If the coefficient of static friction between the ladder and the floor is 0.60, what is the largest angle ladde..
A freezer is used to freeze 5.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T = 0°C. Determine the change in the entropy of the water
A 7 g bullet moving horizontally at 200 m/s passes through a 150 g tin can sitting on a post. What was the bullets speed after leaving the can
Before landing astronauts on the moon, the Apollo 11 space vehicle was put into orbit around the moon. Calculate the ratio of densities (moon to earth)
If the electric field strength in air exceeds 3.0 ? 106 N/C, the air becomes a conductor, determine the maximum amount of charge that can be carried by a metal sphere4.9 m in radius
Sixty identical drippers, each with a hole of diameter 1.00 mm are used to water a yard. how fast the water is coming out the drippers
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal, Find the car's position relative to the base of the cliff when the car lands in the ocean
A 21 kg suitcase is being pulled with constant speed by a handle that is an angle of 25 degrees above the horizontal. If the normal force exerted on the suitcase is 170 N, what is the force F applied to the handle?
A woman walk up a flight of stairs. The gain in her gravitational potential energy is U, and her power output isP. what's her gain in potental energy
a popgun uses an ideal spring for which k=2000N/m. how high can the gun shoot a 5.0gram projectile
If the pressure of the 3 cm3 volume is reduced to 2.0 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container
A blender is switched to a lower speed and the angular velocity of its blade decreases uniformly from 52 rad/s to 12 rad/s. Through what angle does the blade turn during this time
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