Physics, 13.01.2021 01:20 alannaamarriee
1) A 10,000 newton car attempts to make a turn with a radius of 15 meters on dry asphalt (uk= 0.67, us = 0.85) while traveling at 18 meters per second. a. Calculate the centripetal force needed to make the turn.
Answers: 2
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What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black
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When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false
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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?
Answers: 1
1) A 10,000 newton car attempts to make a turn with a radius of 15 meters on dry asphalt (uk= 0.67,...
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