- 6

- 0

**am i in the right place???**

i everyone i have a physics question but i am not sure if i am in the right place or not..... the question is:

Estimate the number of water molecules in a raindrop 1.5 mm in radius.

i really dont want you to solve it just give me the equation that i am supposed to use to solve the question.....

and again.... if i am in the wrong place...please tell me where i am supposed to post this question

thanks a lot