Answer:
<h2>
96 Joules</h2>
Explanation:
We know that efficiency is the ratio of output power by input power. i.e. Efficiency describes the quality of machine or system how good it is.
Solution,
Energy input of system = 120 J
Efficiency = 80% = 
Now,
According to definition,
Efficiency = 
Cross multiplication:

Calculate the product

Hope this helps...
Good luck on your assignment...
card games
board games
bird watch
write a song
make a game
count stuff
throw a ball with someone
play outside
Answer:
For every action, there is an equal and opposite reaction.
Explanation:
Physics helps alot lol