Three carnot engines operate between the following temperature limits.
a) 400 and 500 k
b) 500 and 600 k
c) 400 and 600 k
each engine extracts the same amount of energy per cycle from the high-temperature reservoir. rank the magnitudes of the work done by the engines per cycle, greatest first. (note: use only the symbols > or = , for example b> a=c.)

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.