What is three example of technology

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

If element x has 99 protons how many electrons does it have

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?