Engineering, 17.12.2019 20:31 garzar7523
Awoman is riding a bicycle down an 18% slope. her velocity is 25 km/hr into an oncoming 2-km/hr wind. the air is at 15◦c and 101 kpa. assuming that the only forces affecting the speed are the weight and drag, calculate the drag coefficient if the frontal area is 0.6 m2 and the combined mass is 54 kg. speculate whether the rider is in the upright or racing position.
Answers: 2
Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
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 18:10
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
Engineering, 04.07.2019 18:20
Find the minimum film thickness for a journal bearing with the data below. shaft diameter, d-50 mm, clearance ratio, cdratio? 0.001, shaft speed, n 2000 rpm; bearing length. i 200 mm; eccentricity ration, ? -0.55. ( note, cdratio-ca/d) the minimum film thickness is um
Answers: 2
Awoman is riding a bicycle down an 18% slope. her velocity is 25 km/hr into an oncoming 2-km/hr wind...
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