Engineering, 19.10.2019 01:10 needthehelp78
Atoboggan having a mass of 11.5 kg starts from rest at a and carries a girl and boy having a mass of 40 kg and 45 kg, respectively. when the toboggan reaches the bottom of the slope at b, the boy is pushed off from the back with a horizontal velocity of vb/t = 2 m/s, measured relative to the toboggan. suppose that h = 3.3 m . neglect friction in the calculation.
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Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
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Engineering, 04.07.2019 18:20
Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options
Answers: 2
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 18:20
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
Atoboggan having a mass of 11.5 kg starts from rest at a and carries a girl and boy having a mass of...
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