How do I answer number 4? Please help x

asked May 7, 2020 195k views

1 vote

7.5k points

Please log in or register to add a comment.

6 votes

Step-by-step explanation:

Efficiency is the ratio of energy out to energy in.

e = Eout / Ein

0.52 = 800 J / Ein

Ein ≈ 1538 J

Round as needed.

Dmila Ram answered May 14, 2020

8.5k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers