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A block of ice starts from rest on an apartment building's roof, which slopes at 41° below the horizontal. The block slides down the icy frictionless roof for 5.0 m and then leaves the edge, which is 12 m above the ground.
a. How far from the building does the block strike the ground?
b. If a 1.8 m fence stands 6.0 m from the building, show whether or not the ice block will hit the fence.
A block is attached to a ceiling by a spring of force constant k. When pulled down and released, what is the force constant k of the spring
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The space shuttle performs a retro burn for 3.5min to go from an orbital velocity of 17,500mph to re-entry velocity of 5000mph.
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.50 °C. What must be the minimum temperature of the hot heat reservoir in order to reach at least 46.40 percent efficiency with heat-engine? (Give the answer i..
The train on the right accelerates leftward at 0.82 m/s2.How far does train on the left travel before the front ends of the trains pass.
Two horizontal forces, 249 N and 165 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to point to the direction of the net force.
A runner of mass 51 kg runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to the earth has magnitude 3.50 m/s. The turntable is rotating in the opposite direct..
A mass of 5.10 kg is suspended from a 1.27 m long string. Calculate the angle between the string and the vertical
A rocket is accelerating upward at 4.90m/s2 from the launchpad on the earth. If the ball is displaced 8.50 ? from the vertical and released, find the amplitude of the resulting swings of this pendulum
By what percent must one increase the tension in a guitar string to change speed of waves on the string from 327 m/s to 376 m/s.
A U-236 nucleus fissions directly into Xe-138 and Sr-98 without the emission of neutrons. What is the fraction of the total kinetic energy released is carried by the lighter fragment
A hydraulic lift consists of two pistons that connect to each other by an incompressible fluid. If one piston has an area of 0.49 m^2 and the other an area of 6.2m^2, how big a mass can be raised by a force of 220N exerted on the smaller piston.
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