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A heat engine operates between a high-temperature reservoir at670K and a low-temperature reservoir at 320 K. In one cycle, the engine absorbs4500J of heat from the high-temperature reservoir and does 2200 J ofwork. What is the magnitude of the net change in entropy as a result of this cycle?
J/K
You are given three capacitors, with capacitances 0.0075 µF, 12000 pF, and 0.029 µF, what is the maximum and the minimum voltage difference would they make when charged to 130 µC
Light of wavelength 659.4 nm is emitted by a star. The wavelength of this light as measured on Earth is 661.4 nm. How fast is the star moving with respect to Earth
Four or five gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. Use the following specific heat capacity data to resolve which block will increase its temperature the most.
A 80kg football player is moving at 5.7m/s to the east; a 140kg player is moving at 5.4m/s to the west. While they are still in the air, how fast is the pair moving
A car with a total mass of 1.93 103 kg has wheels of radius 35.0 cm and moment of inertia 0.715 kg · m2. Find the car's rotational energy when the car is moving at a speed of 30.0 m/s
A sphere that is a perfect blackbody radiator has a radius of 0.140 m and is at 250°C in a room where the temperature is 27°C. find the net rate at which the sphere radiates energy.
Imagine that in the distant future NASA lands a manned mission on one of many Jupiter's moons, Calculate the diameter of the moon
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. How much energy is stored in the capacitor before the dielectric is inserted
Three deer, A, B, and C, are grazing in a field. Deer B is located 64.2 m from deer A at an angle of 51.3 ° north of west. What is the distance between deers
A car is traveling at 85.1 km/h at this speed the car has a fuel efficiency of 14.5 km/L. What is the average flow rate of gasoline
Illustrate what value-chain matchups exist? Illustrate what opportunities for skills transfer, cost sharing or brand sharing are evident? Prior to its divestiture, illustrate what kind of strategic fits existed among adidas' core business and its ..
the focal point of a convex mirror is 4.0 m behind the mirror. a woman stands 2.0m in front of the mirror. what is the distance between the woman and her image
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