A boy lifts a 30N toy car 2 meters above the ground. How much work did the boy do on the car?

Jake has a nine month old son. how can he build his self esteem

We found the centripetal acceleration of the earth as it revolves around the sun. compute the centripetal acceleration of a point on the surface of the earth at the equator caused by the rotation of the earth about its axis. (enter the magnitude. the radius of the earth is 6,371 km.)

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.