Apelton wheel operates from a net head of h 300 m and at a flow rate of 4.2 m /s. the wheel diameter is 1.5 m. and the rotational speed is 450 rpm. the water that leaves the penstock is divided into 5 streams. the nozzle coefficient is cn 0.98 for each nozzle. impulse blades turn the flow into the direction b2 25, and as a result of friction, the relative velocity reduces by an amount that gives a velocity coefficient cy 0.90. find (a) work output of the turbine, (b) the hydraulic efficiency, (c) the nozzle diameter and the number of buckets in the wheel.

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

If a simple machine reduces the strength of a force, what must be increased?