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I need answers based on IGCSE Edexcel Marking Scheme
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Physics, 22.06.2019 17:30
Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity
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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 17Β°c. this system uses a regenerator as well as reheating and intercooling β 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 20Β°c. determine the systemβs 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 19:30
Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.
Answers: 1
Mathematics, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
Biology, 10.12.2020 02:50
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Chemistry, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
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Spanish, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50
Mathematics, 10.12.2020 02:50