Hi who wants to be friends I talk to boys and girls i can also speek spanish

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

True or false graphs must include scales that increase by the same amount