The greeks studied charges using gold copper magnetite amber

Need in all of themmm only answer if you know plsssss

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

The movement of electrons between atoms is called an