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A reversible power cycle whose thermal efficiency is 40% receives 50 kJ by heat transfer from a hot reservoir at 600 K and rejects energy by heat transfer to a cold reservoir at temperature Tc. Determine the energy rejected in KJ
A centrifuge in a medical laboratory rotates at an angular speed of 3400 rev/min, Find the constant angular acceleration of the centrifuge
A 8.85 ?C point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.65, Find the tension in the wire, What would the tension by if both charges were negative
A 2.83-kg book slides 1.17 m along a level surface. The coefficient of kinetic friction between book and surface is0.41. Find the work done by friction
The system is released from rest, and the string moves without slipping over pulley. If the larger mass is traveling at a velocity of 2.25 m/s when it has dropped 1m, how much mechanical energy was lost due to friction in the pulley's axle.
A bicycle and rider have a combined mass of 100 kg. How many calries of heat are generated in brakes when the bicycle comes to a stop from a speed of 36 km/h.
A motor develops 0.75 kW of power at 2000 revs per 10 min. What torque is applied to the motor shaft
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
The primary winding of an electric train transformer has 400 turns and the secondary has 50. If the input voltage is 120V(rms), what is the output voltage
Sheena can row a boat at 3.10 mi/h in still water. She needs to cross a river that is 1.11 mi wide with a current flowing at 1.77 mi/h. Not having her calculator ready, How long does it take her to cross the river
A box of books weighing 397 N is shoved across the floor by a force of 543 N exerted downward at an angle of 37 degrees below the horizontal.
How far from the dog would the suitcase land? You can ignore air resistance.
A particle starts from rest at x = 0 and moves for 15.7 s with an acceleration of +2.25 cm/s2. find the position of the particle at the end of this motion
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