Physics, 19.05.2021 21:00 pelaezaiden35
A car accelerates from a standstill to 60 m/sec in 10 sec. What is the acceleration?
Answers: 2
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 09:30
True or false graphs must include scales that increase by the same amount
Answers: 1
Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
A car accelerates from a standstill to 60 m/sec in 10 sec. What is the acceleration?...
Mathematics, 15.07.2019 00:30
Biology, 15.07.2019 00:30
Mathematics, 15.07.2019 00:30
Mathematics, 15.07.2019 00:30
Biology, 15.07.2019 00:30