By just smiling. It normally makes you look more happy.And if your happy that's positive body languge
E=F*d/2 = M*g*d/2 = 25kg * 9.8 N/kg *0.65m / 2 = 79.625J
Because static electricity build up in our homes because we have the heaters on which suck moisture out of the air.
Your answer can be either 92 900 000 or 9.29e+7
