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A stone of mass 3 kg is thrown at an angle of 20o below the horizontal with speed 30m/sec from the edge of a cliff that is 4.0 m high. How far does the stone land horizontally from the bottom of the cliff?
(Utilize the equations of uniformly accelerated motion)
How many electrons would have to be added to one of these spheres to make it electrically neutral?
A ray of light has an angle of incidence of 34.0 ° on a block of quartz and an angle ofrefraction of 17.5°. What is the index of refraction for this block of quartz?
A blob of iron sinks form the surface of earth to the center. Assume the blob does not transfer any energy to its surroundings. Assume the density of earth is uniform.
Fred and Barney are two electric charges that are initially held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they were..
A small rocket maintains a constant thrust as to produce an acceleration of 2 m/s^2. determine the maximum achieved rocket thrust
the four tires of an h3 are inflated to absolute pressure of 2.5x 105 pa each tire has area of .05 m2 in contact with
two 4.0kg masses are 2.0m apart on a frictionless table. each has 1.0uc of charge.a. what is the magnitude of the
a 5m long ladder weighs 200n rests against a smooth vertical wall with its base on a horizontal rough floora distance
A sled may be either pulled with a rope or pushed from behind.Assume that in either case, the propelling force acts at an angleof 45° above the ground. Draw the free-body diagrams for both alternatives
a muon and an antimuon are moving in opposite directions with velocities of -0.6 c and 0.6 c respectively. when they
A 10-kg bucket is lowered by a rope in which there is 63N oftension. What is the acceleration of the bucket
A force of 315N is applied horizontally to a wooden crate in order to displace it 35m across a level floor at a constant velocity. Calculate the initial internal energy of the crate
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