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A heat source at 627 oc transfer heat at the rate of 3000 kj/min. to a system maintained at 287 oc. A heat sink is available at 27 oc . Assuming these temperatures to remain constant, find:
(1) Change in entropy of source
(2) Entropy production accompanying heat transfer
(3) The original available energy
(4) The available energy after heat transfer
A box of bananas weighinh 40 N rests on a horizontal surface. The coefficient of static friction between the box, the magnitude of the frictional force is
imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they
q1. in a car lift the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600n. what is the
Two identical capacitors ,each with capacitance C,are connected in series and the combination is connected in paralell to a third capacitor.the equivalent capacitance of this network is?
One side of the roof of a building slopes up at 30.0°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. Determine the maximum height the rock reaches above the point where it was kicked
An electric field greater than about 3x10^6 V/m causes air to break down (electrons are removed from the atoms and then recombine, emitting light). Estimate the voltage between your finger and the doorknob
The water in a tank is at a gauge pressure of 259,145 Pa. If the bottom of the tank that has an area of 0.5 m2
A gold conductor with an electric field of 0.01 V/m applied, is1.00 cm long, and 0.05 mm in radius. Assuming one conduction electron per atom, what is the drift velocity of the electrons at a temperature of 20 degrees C. At 50C?
a fan blade is rotating with a constant angular acceleration of 14.0 rads2. at what point on the blade as measured from
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A person 1.6 m tall stands 4.9 m from a reflecting globe in a garden. How large is the person's image
A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm, Find the self-inductance of this solenoid
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