Physics, 04.12.2020 08:20 CadenClough13
Calculate the centripetal force of the athlete if the athlete's mass is 65 kilograms. An athlete completes 1 lap around a track with a radius of 25 meters in 180 seconds.
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Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
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A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
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Calculate the centripetal force of the athlete if the athlete's mass is 65 kilograms.
An athlete co...
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