You are lying in bed and want to shut your bedroom door. you have a bouncy "superball" and a blob of clay, both with the same mass. which one would be more effective to throw at your door to close it?
a. the superball.
b. neither will work.
c. the blob of clay.
d. both the same.
Answers: 2
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 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 03:00
Does science support the idea that humans have influenced global warming? provide specific examples that show how two knowledgeable individuals with differing opinions might argue.
Answers: 2
Physics, 23.06.2019 03:00
How can a cyclist's acceleration change even if its velocity remains constant?
Answers: 1
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