Physics, 26.11.2019 22:31 kathlynskare06
One kilowatt-hour (kwh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. a kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. determine the number of joules of energy in one kilowatt-hour.
Answers: 2
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?
Answers: 1
Physics, 21.06.2019 23:30, 1031kylepoe03
Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?
Answers: 3
One kilowatt-hour (kwh) is the amount of work or energy generated when one kilowatt of power is supp...
Mathematics, 14.04.2020 22:57
Mathematics, 14.04.2020 22:57
Mathematics, 14.04.2020 22:57
Mathematics, 14.04.2020 22:57
Mathematics, 14.04.2020 22:57