The statement about "<span>efficiency compared the output work to the output force" is false. Efficiency can be compared from the input work to the output work.</span>
Answer:

Explanation:
Current is the rate of flow of charge.



Answer:
B. Developed out of efforts of man trying to explain our physical environment.
Explanation:
This is because physics, as we all know of, is considered to be <em>crucial to understanding the world around us</em>, making it the most basic and fundamental of science.
Answer:
If and then for example: If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.
Explanation: