1. Calculate the electrostatic force between a 3.0C
object and a -4.00 object that are 2m apart.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

it doesn't. it was imagined up in the middle ages.