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(a) A carnot engine operates between a hot reservoir at 47C and a cold one at -13C. If the engine absorbs 500J as heat per cycle at the hot reservoir, how much work per cycle does it deliver?
(b) If the engine, working in reverse functions as a refrigerator between the same 2 reservoirs, how much work per cycle must be supplied to remove 1000J as heat from the cold reservoir?
An ideal gas initially at pressure 8.0 atm and temperature 300K expands adiabatically until its volume doubles. Find the final pressure and temperature
What is the magnitude of the electric force between a proton and an electron when they are at a distance of 1.91 angstrom from each other
Mary applies a force of 70 N to push a box with an acceleration of 0.49 m/s2. When she increases the pushing force to 80 N, What is the mass of the box
At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.1 m/s2. How fast will the automobile be traveling at that instant
A 4 cm radius hose pumps out gasoline at a speed of 2 m/s in to an underground tank. what is the volume of the tank
Two spheres of mass m and a third sphere of mass M form an equilateral triangle, and a fourth sphere of mass mB is at center of the triangle.
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, and a power of +1.83 diopters in the close-vision part. Find the near and far points of this person's uncorrected visi..
q1. a battery having an emf of 11.10 v delivers 102 ma when connected to a 61.0 load. find out the internal resistance
A steel ball is dropped from a building's roof and passes a window, taking 0.13 s to fall from the top to the bottom of the window, a distance of 1.20 m. How tall is the building
0.20 moles of Helium gas that initially occupies a volume of 4.0L under a total pressure of 1.0x10^5 Pa, subsequently undergoes an isobaric expansion to 5.0L followed by an isothermal expansion to 8.0L.
An aircraft weighing 991 N is accelerated at 11 m/s2 for 13 seconds, at which time the aircraft launches. How much work was done on the aircraft
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
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