Jack & Jill went up the hill to fetch a pail of water. At the well, Jill used a force of 7lbs to turn the crank handle with a radius of 1 foot to rotate the axle with a radius of 1 inch, so she could raise the 40lb bucket of water. A) What is the ideal mechanical advantage of the wheel?

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?