6. A 75.0 kg man pushes on a 5.0 x 10 ton wall for 250 s but it does not move. How much work does he do on the wall? (2000 lb I ton; 0,454 kg = 1 lb)

Which is not a step in the rock cycle?

In a system, when potential energy decreases, then entropy also decreases. true false

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?