What happens when a lamp plugged into an electrical outlet is turned on?
a.
energy is gained.
b.
the form of energy changes, but the total energy remains the same.
c.
energy is lost.
d.
the form of energy changes and the total energy increases.

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)