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Describe how Newton's three laws of motion involved in the process of lifting a weight using the high pulley. Consider, too, what would happen if the floor and seat where completely smooth. Is this a process in which momentum and energy are conserved? Why?
The small piston of a hydraulic lift has a raduis of 1 in and the large piston has a radius of 5 in. What is the weight of the heaviest vechicle that can be lifted
A sphere of radius 10.0 cm floats in equilibrium partially submerged in water with its lowest point 5.00 cm below the water's surface. What is the buoyant force acting on the sphere
A ball is thrown upward with an initial velocity of 96 ft/secfrom the top of a 100 ft building. What equation models the height of the ball as a functionof the time t? When will the ball attain its maximum height?
A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his shoulder. What is the torque on the shoulder joint if the arm is horizontal
the electron gun in a color tv accelerates the electrons through about 25000 volts. estimate the force on such an
Two spherical objects with a mass of 5.35 kg each are placed at a distance of 2.35 m apart. How many electrons need to leave each object
in the arctic polar bears must be able to walk on thin ice to travel and hunt for food. an average male polar bear has
a particle moves according to the equation x 8t2 where x is in meters and t is in seconds. a find the average velocity
a ball is thrown vertically upward with a speed of 25m/s, how long does it take to reach its highest point
A 2.93kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 9.83kg cylindrical pulley, Find the angular acceleration of the pulley
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface, assuming complete absorption? How does this pressure compare with the earth..
a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 20m/s the stone travels 100 m horizntally and hits the beach. what is the height of the cliff
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