Which of these do not affect fluid friction? The surface of an object
The viscosity (thickness) of fluid an object is in
The shape of an object
The weight of an object

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.

i believe it is b. what was the cause of the big bang

hope this !

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.