Physics, 06.10.2019 14:40 uehlingt39

What is oxygenated blood? de-oxygenated blood?

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Physics, 21.06.2019 23:00, hunterdylan01

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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Physics, 22.06.2019 15:30, linnaefoos2183

This is the number of complete movements of a wave per second.

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Physics, 22.06.2019 16:20, djwattam

Select the correct answer. what does the process of natural selection involve?

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Physics, 22.06.2019 17:00, marchellepenuliar

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.