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A small block with mass 0.0300kg slides in a vertical circle of radius 0.475m on the inside of a circular track. During one of the revolutions of the block, when the block is at the bottom of its path, point A, the magnitude of the normal force exerted on the block by the track has magnitude 4.05N . In this same revolution, when the block reaches the top of its path, point B, the magnitude of the normal force exerted on the block has magnitude 0.685N . How much work was done on the block by friction during the motion of the block from point A to point B?
Define Eddy viscosity and Von Karman constant using the mixing-length theory.
A catcher catches a fastball going 95mi/hr and recoils 12cm while stopping the ball in 0.005s. (mass of the ball is 280g). find the average force the ball exerts on the hand & glove
A jet transport has a weight of 2.43 x 106 N and is at rest on the runway. The two rear wheels are 16.0 m behind the front wheel, and the plane's center of gravity is 12.4 m behind the front wheel. Determine the normal force exerted by the ground on ..
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 306 N for7.2 s, through which time the refrigerator moves a distance of 3.1 m at a constant velocity. What is the work done by friction? What is the tota..
A beaker of water rests on an electronic balance that reads 999.0 g. A 2.4 cm-diameter solid copper ball attached to a string is submerged in the water, What is the new balance reading
the membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space.
a length of aluminum wire has a resistance of 20.0 ? at 14.0degc. when the wire is warmed in an oven and reaches
Several bacteria are propelled by motors that spin hair-like flagella. A characteristic bacterial motor turning at a constant angular velocity has a radius of 1.9x10 -8 m, and a tangential speed at the rim of 2.9x10 -5 m/s. (
The second-order fringe of 660 nm light is observed at an angle of 21° when the light falls on two narrow slits that are 3.68 μm apart. at what angle would we expect it to be observed
imagine a truck with a mass of 23 metric tons t 1 t1000 kg barrelling down a highway at a speed of 55 mih. what is the
A 0.200-kg block along a horizontal track has a speed of 1.80m/s at once before colliding with a light spring of force constant 44.2 N/m located at the end of the track.
A 500 g block slides along a frictionless surface at a speed of 0.35m/s .it runs into a horizontal mass less spring with spring constant 50N/m that extends outward from a wall.
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