Statement: a fire hose has a 5 in
insidediameter and water is flowing at 600 gal/min. the flow exits
througha nozzle contraction with a diamter dn.
question: for steady flow, what
shoulddn be in inches to create an average exit velocity
of 25m/s?

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way