Which is an example of an energy transformation?
(A) a soccer ball sitting in a field.
(B)
a person waiting at a crosswalk.
(C)
an unlit candle.

(D)
a boulder falling off a tall cliff.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Why is the melting of ice a physical change ?

How many peaks will be present in a mass spectrum for brcl?