How much force is needed to accelerate a 9760 kg airplane at a rate of 4.6 m/s^2

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.

their crystal patterns have been disrupted by stress