A turbofan operates at sea level at a speed of 850 ft/s. It ingests 270 lbm/s of air into the core and five times this much into the fan (i. e. bypass ratio is 5). The core and fan air are not mixed. The fuel flow is negligible compared to the air flow. The exit areas of the fan and core are 2450 and 2460 in2, respectively. The exit pressures of the fan and core flow are 22.4 and 21 psia, respectively. The exhaust velocities of the fan and core are 1080 and 1190 ft/s, respectively. Calculate the thrust generated at sea level.

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.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

What is a monomer? how do they form a ploymer from the view point of chemical bonding?