☰ Contents · Physics

Equality of work. Efficiency. Chapter III review

Lessons 36–38 · 3 lessons · N.Sh. Turdiyev. Physics Grade 6, 3rd revised edition. Niso Poligraf Publishers, Tashkent, 2017
Answers are for parents and teachers.
1
A_u = 120 J, A_t = 150 J. η in %?
2
Efficiency 60 %, useful work 300 J. Total work in J?
3
Lever: F₁ = 25 N, l₁ = 2 m, l₂ = 5 m. F₂ in N?
4
Write the golden rule in your own words and give one example.
5
Write the five key terms of Chapter III with one sentence each.