a metal box has weight of 20N on its rests 1m by 0.6 m on the floor. how much pressure exerted be the metal box. take gravity 10m/s^​

Rocío strikes a 0.058-kg golf ball with a force of 272n and gives it a velocity of 62.0m/s. how long was ricío club in contact with the ball?

You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects