2. naca 2412 airfoil has a zero lift angle of -2.1 degree and a lift curve slope of 2  (if the alpha is expressed in radians). the pitching moment coefficient at the quarter chord is -0.036. compute the lift and pitching moment at quarter chord at a 4 degree angle of attack if the freestream velocity is 50 feet sec, and the chord is 2 feet. assume sea level conditions. (ans: 3.8 lb per foot of span, -0.428 ft. lb per foot of span)

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.