# Homework Help: Mas by watt

1. Dec 7, 2007

### VincentX

I think this might be an easy one but im stucked right now and would really appreciate some help.

How much mas is produced under a year by a nuclear power plant that gives 1,0 GW.

Edit: ok seems like i made the newbie mistake to post this in the wrong forum, please forgive me moderator lords.

Last edited: Dec 7, 2007
2. Dec 7, 2007

### chroot

Staff Emeritus
How much mass is produced? The nuclear power plant essentially converts mass into energy -- mass is not produced, it is consumed.

- Warren

3. Dec 7, 2007

### VincentX

Ok, sorry for my bad language. How much mas is equal to the energy as being used under a year.

Offcourse i know E=mc^2 but how do i convert the watt to energy and calculate the mas under a year.

4. Dec 7, 2007

### Dick

A watt is a Joule per second. So you've got 10^9 of them times the number of seconds in a year.

5. Dec 7, 2007

### VincentX

Thank you very much that was exactly what i needed to know