/sci/ - Science & Math

>>11320443
Because the strain is obviously different at different points along the block. dx/dy=γ, approximately.
>>11320449
Because derivatives are just the ratio of differential quantities :^]

>>11259657
Combs aren't conductive, but the plastic still picks up excess electrons when it rubs against your hair. A net charge on the comb and the opposite charge on your hair means there is attractive force between the two. Basically this >>11259665
Angel dust is better btw