the roque requried to turn the crank on an ice cream maker is 4.50 N. m how much work does it take to turn the crank through 300 full turns

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

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created

What are known as the properties of substances that describe a substance et does not change that substances?