Efficiency of a simple machine is the ratio of mechanical advantage and speed ratio.
If mechanical advantage = speed ratio then efficiency = 1
Which is impossible for a practical machine due to presence of frictional force which wastes some energy and thus lowers the output
Answer:
I strongly feel its 1.
Explanation:
the expectancy theory of motivation is basically getting an reward for a great accomplishment so 1 would make the most sense in this question, lmk if its wrong
Answer:
D.
Explanation:
its the only answer that has a answer to it.
It's true
work measure by joule.
Energy = work/time
= joule/s .
and joule/s represents watt