Answer:
1. digestive system - anything assisting in eating, like the stomach
2. respiratory system - anything assisting in breathing, like the lungs
3. muscular system - well, the muscles :)
4. circulatory system - the heart and the blood vessels
Answer:86F
Explanation:
Using the formula
F=(°Cx9/5)+32
F=(30x9/5)+32
F=(270/5)+32
F=54+32
F=86F
Energy Ouput (Useful) / Total Energy Input = 4000 / 4800 = .833
E = 83% assuming 4800 is actually input to fan
This is the answer of your question.
