What is the power of an electric toothbrush if it can do 750 joules of work in 75 seconds?

asked May 11, 2021 101k views

0 votes

7.1k points

Please log in or register to add a comment.

5 votes

Power = (work done) / (time to do the work)

Power = (750 joules) / (75 seconds)

Power = 10 joules/second

Power = 10 watts

Matthew Sanders answered May 17, 2021

6.5k points

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

7.8m questions

10.5m answers