21. Water flows out of a large open reservoir through a small pipe that opens to the atmosphere a distance below the level of the water in the reservoir at a speed of 10 m/s. What is the height of the water above the pipe? [Po=1.013x105 N/m²] a) 5.1 m b) 7.2 m c) 9.6 m d) 11.0 m e) 12.4 m

A machine is a device that accepts energy in some available form and utilizes it to do a type of work. Energy, work, or power has to be transferred from one mechanical part to another to run a machine. While the transfer of energy between two machine par…

In physics, work is the product of the net force in direction of the displacement and the magnitude of this displacement or it can also be defined as the energy transfer of an object when it is moved for a distance due to the forces acting on it in the d…