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A heat engine operates between high temperature of 610 K and low temperature of 320 K. In one cycle the engine absorbs the heat of 6200 J from high temperature reservoir and works of 2400 J. Calculate
a. The entropy change of the high temperature reservoir on one cycle.
b. The entropy change of the low temperature reservoir on one cycle.
a steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200
two equally charged insulating balls each weigh 0.32 g and hang from a common point by identical threads 50 cm long.
A macroscopic (or macro) lens for a camera is usually a converging lens of normal focal length built into a lens barrel that can be adjusted to provide the additional lens-to-film distance needed when focusing at very close range. Suppose that a m..
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. After an additional displacement, the plane is back where it started. Find the magnitude and the direction of the last leg of the journey.
state how much energy is transferred in each of the following casesa. 2 grams of steam at 100 degrees celsius condenses
define the magnitude of the acceleration of the elevator. A 300 kg piano slides 4.1m down a 30 degree incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction ..
3.09 moles of neon, a monatomic gas, starts out at conditions of standard temperature and pressure. The gas is heated at constant volume until its pressure is tripled, then further heated at constant pressure until its volume is doubled. Assume that ..
mass, 0.057 kgs, driving force F0 = 8.9 N and linewidth 48 radians/second, has its damping constant, b, changed, Determine the new damping constant,b
If the balloon is 24.9 cm in diameter when child loses it, what is its diameter at an altitude of 1510 m? Assume that the balloon is very flexible and so surface tension can be neglected.
A grindstone of mass, 30 kilogram and radius 20 centimeter, starts rotating from rest and has a constant angular acceleration of 0.40 rad/s2. Find what is the angular displacement a t = 15 sec
a light bulb is connected to a 120.0-v wall socket. the current in the bulb depends on the time t according to the
A proton accelerates from rest in a uniform electric field of 675 N/C. At some later time, its speed is 1.35 106 m/s. (a) Find the magnitude of the acceleration of the proton.
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