Physics, 30.03.2020 15:31 aryannaholmes9
By connecting two identical storage batteries together in series ("+" to "-" to "+" to "-"), and placing them in a circuit, the combination will yield:
a. zero volts.
b. twice the voltage and the same current will flow through each.
c. the same voltage and different current will flow through each.
d. twice the voltage and different currents will flwo through each.
Answers: 2
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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?
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Answers: 3
Physics, 22.06.2019 07:30, carlinryan
Which of the following is an example of motion in two dimensions?
Answers: 3
By connecting two identical storage batteries together in series ("+" to "-" to "+" to "-"), and pla...
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