Which examples are ways that models can help scientists solve problems? Check all that apply.

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

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm