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A 2 lb particle is sliding along a at horizontal frictionless surface with a velocity of 10 ft/s along the x-axis. When the particle is 20 ft from a wall which is perpendicular to the x-axis, it explodes into two identical pieces. One piece A, hits the wall at a y-coordinate of 5 ft while the other B hits the wall at a y-coordinate of -10 ft. Determine the impulse on particle A by the explosion, the velocity of A relative to B at the instant immediately after the explosion and the time dierence between when A hits the wall and B hits the wall.
a wheel barrow is used to lift a 200 lb load. the length from the wheel axle to the center of the load is 2 ft. the
An elevator descends from rest with an acceleration of 5 ft>s2 until it achieves a velocity of 15 ft>s. Determine the time required and the distance traveled.
a standard door into a house rotates about a vertical axis through one side as defined by the doors hinges. a uniform
Important information about Multipal choice question on mechanics, A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?
a gas turbine takes in 250000 lbmhr of air at 80f and compresses it to 6 atmospheres. the combustion of gas adds
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
a 60 mm bore 02 series double row angular contact ball bearing has a 15 degrees contact angle. the outer ring rotates
a 5-lb roast initial at 70degf is placed in an oven at 350degf. you may assume the heat transfer coefficient is 2.5
an opaque horizontal plate is well insulated on the edges and the lower surface. the irradiation on the plate is 3000
a bottle filled with soda rests on the conveyor of a grocery check-out. the bottle weights 2 lbs the cg is 8 inches
a water pump is attached to an electric motor. the inlet and outlet diameters of the pump are the same. the volume flow
at time t 0 the velocity of cylinder a is 0.38 ms down. by the methods of this article determine the velocity of
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