Determine increase in entropy produced by the parachutist
An 92 kg parachutist descends through a vertical height of 420m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21 degrees C
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The total energy stored in two capacitors is 0.0115 J. A) What is the unknown capacitance , C? B) what is the total charge on the two capacitors?
The acceleration of gravity is 9.8 m/s2 . Find the coefficient of static friction between crate and floor.
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Aluminum has a density of 2.7 103 kg/m3 and a molar mass of 27 g/mol. The Hall coefficient of aluminum is R = -3.0 10-11 m3/C. What is the number of conduction electrons per aluminum atom?
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A charge of 4.40 10-9 C is located 3.0 m from a charge of -2.95 10-9 C. Find the magnitude of the electrostatic force exerted by one charge on the other.
A centrifuge rotor has a moment of inertia of 3.40 10-2 kg·m2. How much energy is required to bring it from rest to 8000 rpm?
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