The statue of mass 2t is lifted by crane to the pedestal, to a height of 2m. Determine the useful and invested work if the efficiency of the crane is 45%​

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs

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?