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Physics, 21.06.2019 14:40
Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?
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Physics, 22.06.2019 04:00
All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction
Answers: 2
Physics, 22.06.2019 13:50
9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.
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 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
Identify the reaction type shown and describe the clues that were used to identify it.
Fe2O3 + 2SiO...
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