Physics, 24.07.2019 18:40, SkyeShadow525
Hurry! during early research in nuclear energy, why were scientists surprised that the products from splitting a uranium nucleus had less mass than the reactants? 1.they expected that the large release of energy would cause an increase in mass. 2.up to that time, only chemical changes were known to form less mass than they started with. 3.all known changes always started and ended with the same amount of mass. 4.other known nuclear changes resulted in the same mass of products as reactants.
Answers: 1
Physics, 22.06.2019 05:00, hihihi129473838
Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?
Answers: 3
Physics, 22.06.2019 18:00, maren17
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – 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 20°c. determine the system’s 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, 23.06.2019 02:00, AgentPangolin
The gravitational force between pluto and charon is 3.61 × 1018 n. pluto has a mass of 1.3 × 1022 kg, which is only slightly greater than charon’s mass of 1.6 × 1021 kg. how far apart are pluto and charon? 2.0 × 107 m 2.4 × 1012 m 3.8 × 1014 m 5.8 × 1024 m
Answers: 1
Hurry! during early research in nuclear energy, why were scientists surprised that the products fro...
Mathematics, 09.03.2021 18:30
Mathematics, 09.03.2021 18:30
Engineering, 09.03.2021 18:30
Mathematics, 09.03.2021 18:30
Social Studies, 09.03.2021 18:30
Mathematics, 09.03.2021 18:30