What is the path that traces the circle in the plane y = − 9 with radius r = 4 and center ( 2 , − 9 , − 1 ) with constant speed 12 ?

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

answer: good job it's all correct !

explanation:

an energy transformation flow diagram is shown

where is it ?

option number c is the right answer.