Answers: 3
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?
Answers: 1
Physics, 22.06.2019 19:30
How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,ℓ=2n=4,ℓ=2 electronselectrons =6,ℓ=ℓ=−1n=6,ℓ=2,mℓ=−1
Answers: 3
Physics, 22.06.2019 21:00
Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2
Answers: 1
Physics, 23.06.2019 03:30
Explain how a step-down transformer makes electricity safe for use in homes
Answers: 2
Bên trong hình trụ giới hạn bởi ρ = 2, -3 < z < 1 đặt trong không gian tự do có điện thế
V =...
Biology, 19.02.2021 06:10
Mathematics, 19.02.2021 06:10
Geography, 19.02.2021 06:10
Mathematics, 19.02.2021 06:10
History, 19.02.2021 06:10
Mathematics, 19.02.2021 06:10
Biology, 19.02.2021 06:10
Mathematics, 19.02.2021 06:10
History, 19.02.2021 06:10
Biology, 19.02.2021 06:10
Social Studies, 19.02.2021 06:10
Social Studies, 19.02.2021 06:10
Mathematics, 19.02.2021 06:10