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A 5.0kg block is put on top of a 7.0kg block. To cause the top block to slip on the bottom one, while the bottom one is held fixed, a horizontal force of at least 24.5 N must be applied to the top block. The assembly of blocks is now placed on a horizontal, frictionless table as in the figure.
(A) Find the magnitude of the maximum horizontal force F that can be applied to the lower block so that the blocks will move together.
(B) Find the resulting acceleration of the blocks.
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assume the roller coaster (h1 = 37 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach point B? The distance traveled is 55.0 m.
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The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner
A high-energy pulsed laser emits a 1.2-ns-longpulse of average power 1.3×1011W. Determine the rms value of the electric field
A pulley system lifts a 500 lb bloch 2 feet with an effort of 50 lbs. If the 50 lbs moves 30 feet, what is the efficiency of the pully system
A 40-g object connected to a spring with a force constant of 30 N/m oscillates with an amplitude of 8 cm on a frictionless, horizontal surface. Find the total energy of the system
A uniform electric field of about 100 V/m pointing straight down, exists just above Earth's surface. what uniform surface charge density would be required
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to four times the earth's radius of 6.38 multiply.gif 106 m.
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