If you are working as a forensic scientist and are given an unknown powder from a crime scene, what would you hope to find out about the powder?

you will hope to find out that it is nothing dangerous so anyone who came into contact with it would not be harmed.

Explanation:

good for her? ? where is the question?

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.