Economics 22) If Pɛd = - 0.8, then in order to increase total profit (TR - TC), a firm should….

(a) increase price, so that TR increases and TC falls.
(b) decrease price, so that TR increases and TC increases.
(c) increase price, so that both TR and TC remain constant.
(d) decrease price, so that TR remains constant and TC falls.
(e) none of the above.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.