If the lifting cable of a hoist lifts a 250-lb engine times 250 lb, or 1,000 foot-pounds of work.
in the air, the amount of work done is equal to 4
Select one:
A. 5
B. 2
C.3
D.4

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.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?