Physics, 17.01.2020 21:31 F00Dislife
Ametal tool is sharpened by being held against the rim of a wheel on a grinding machine by a force of 180 n. the frictional forces between the rim and the tool grind off small pieces of the tool. the wheel has a radius of 20.0 cm and rotates at 2.50 rev/s. the coefficient of kinetic friction between the wheel and the tool is 0.320. at what rate is energy being transferred from the motor driving the wheel to the thermal energy of the wheel and tool and to the kinetic energy of the material thrown from the tool?
Answers: 2
Physics, 22.06.2019 05:30
Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.
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Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?
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(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.
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Ametal tool is sharpened by being held against the rim of a wheel on a grinding machine by a force o...
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