Question

Suppose you supply energy to a machine at a rate of 700 w and that the machine converts 560 j into heat every second. At what rate does the machine do work?

Answer 1

ok

eficiency of machine = (Pout/Pin) x 100%
eficiency of machine = (500/700) x 100%
eficiency of machine = 71.42 %

Answer 2

efficiency of machine = (Pout/Pin) x 100%
efficiency of machine = (500/700) x 100%
efficiency of machine = 71.4235 %

Answer 3

good job @umartouseef :)

Answer 4

thanx gerryliyana