A 15 kg block is attached to a solid disk pulley with a mass of 25 kg. Starting from rest, find the angular acceleration of the pulley. Assume the radius of the pulley is 0.6 m and the height of the block from the ground is 50 m.

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.

do you have a formula possibly

c) up is the direction the magnetic force is acting on the charge.