9.5 Power and efficiency: the rate of doing work, P = Fv, and why no machine gives out everything it takes in | Stadira School Skip to the lesson content

Stadira School

Welcome. You are one step away from this lesson.

Lesson9.5 Power and efficiency: the rate of doing work, P = Fv, and why no machine gives out everything it takes inPart of MYP Physics 4–5

How to start

Sign in. Use Google for a one-tap start, or choose Register Now to make an account with your email.
Join the course. On the course page choose Self-Study or Marked & Mentored. Until 28 February 2027 the code STADIRA100 covers the full price of every school course.
Carry on here. After you sign in you come straight back to this lesson, and your progress is saved.

What you get

Lessons written and checked by qualified teachers
Quizzes with worked answers, so you see where a mark is won or lost
Study at your own pace, on a phone or a computer

Read a free lesson first See the full course Ask us on WhatsApp