Physics, 25.06.2019 07:00 kingjames82
What do we mean when we say that the sun is in gravitational equilibrium?
Answers: 1
Physics, 21.06.2019 13:00
Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:
Answers: 2
Physics, 22.06.2019 12:30
An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.
Answers: 1
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17ยฐc. this system uses a regenerator as well as reheating and intercooling โ the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20ยฐc. determine the systemโs thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Physics, 22.06.2019 18:30
Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton
Answers: 2
What do we mean when we say that the sun is in gravitational equilibrium?...
Arts, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50
History, 11.12.2020 03:50
Arts, 11.12.2020 03:50
Law, 11.12.2020 03:50
Mathematics, 11.12.2020 03:50