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The motor in a refrigerator has power P. If the freezing compartment is at temperature TL and the outside air is at temperature TH (both temperatures measured in kelvin), and assuming the efficiency of a Carnot refrigerator, what is the maximum amount of energy that can be extracted as heat from the freezing compartment in a time t? State your answer in terms of the given variables.
a block is moving down a hill at rest with height of h then it go on a loop, with r=0.5, if the block can comeplete this loop. What is the least height of the hill
A gass has 100 J of energy in the form of heat is transfered to a system and the system does 150 J of work, what is the change in the internal energy of the system
A 1400kg wrecking ball hangs from a 20m -long cable. By how much has the gravitational potential energy of the ball changed
Two people hear a tornado siren, What is the intensity level (in dB) at the farther listener relative to the other listener
An 82.5 kg fullback moving east with aspeed of 5.4 m/s is tackled by a87.0 kg opponent running west at3.28 m/s, and the collision is perfectly inelastic. Calculate the decrease in kinetic energy during the collision.
at a time 3.30 a point on the rim of a wheel with a radius of 0.180 has a tangential speed of 55.0 as the wheel slows
The volume flow rate in an artery supplying the brain is 3.20 10-6 m3/s. If the radius of the artery is 6.00 10-3 m, determine the average blood speed
System A has a temprature of TA = 300K and Ua = 30 MJ/kmol. System B has tempratuer TB = 200K and UB = 60MJ/kmol. Describe (qualitatively) the final (equilibrium) state of the combined system
A car whose initial speed is 40 m/s undergoes a constant acceleration of -5 m/s2 for 6 s when its brakes are applied. How far does the car travel
A car is traveling along a straight road at a velocity of +39.0 m/s when its engine cuts out. For the next ten seconds the car slows down, Find the velocity of the car at the end of the initial ten-second interval
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground while he slows down.
A computer tape moves over two drums at a constant speed v0. Knowing that the normal component of the acceleration of the portion of tape in contact with drum B is 350 ft/s2, determine (a) the speed v0, (b) the normal component of the acceleration of..
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