AP Physics 2 - Unit 3 Electric Force, Field, Potential Question Which of the following provides evidence that there must be at least two types of electrical charge, but that there is only one type of mass?

I don't really know how to prove there is only one type of mass...

This is what i found on google “kinetic energy. energy is transferred from one object to another when a reaction takes place. energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. this energy would be in the form of motion, with the person lifting the blue ball to a higher level.” i hope this you

Which principle states: "geologic processes taking place on earth today operated similarly in the past and can be used to explain past geologic events"? a. lateral continuity

Idk just need points