What is the work done by 20 newton force applied at an angle of 45.0° to move a box a horizontal distance of 40 meters

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.

it takes about 30 days for it to break down