Physics, 07.07.2019 16:00 mandyj5477
A13 kg rock is sitting on a cliff. if the rock has 3,500 joules of potential energy, what is the height of the cliff in meters? (round the answer to the nearest tenth. show work
Answers: 1
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
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Which statement correctly describes the relationship between frequency and wavelength?
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Physics, 22.06.2019 05:00
He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will
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Physics, 22.06.2019 05:40
Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?
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A13 kg rock is sitting on a cliff. if the rock has 3,500 joules of potential energy, what is the hei...
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