Which of the following is equal to the boyant force of a rock placed in a beaker of water?
a)
volume of the displaced fluid

b)
weight of the displaced fluid

c)
volume of the rock

d)
weight of the rock

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Which governments provide garbage collection services to homes and businesses