Engineers need to be open-ended when dealing with their designs. Why? A. They must be adaptable to changing needs or situations.
B. Closed-ended would mean closed-minded, so new products would not be developed.
C. They want the projects to last as long as possible in order to make the most money possible.
D. In engineering fields, the competition is very tough therefore any extra skills possessed by an engineer will make him or her more employable.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

The higher the astm grain size number, the finer the gran is. a)-true b)-false