What is the density of a 700 kg object with a volume of 649 m3

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted