I need help with some problems

[delta_mu]

Hello, I am having a little problem understanding a problem it deals with energy. Here it is:

You tell your friend that no machine can possibly put out more energy than is put into it, and your friend states that a nuclear reactor puts out more energy than is put into it. What do you say?

Thanks in advance!

[cookiemonster]

Something along the lines of "No, it doesn't. Go do a bit of research about how nuclear reactors work." and, if I'm feeling generous that day, I might give them a link to start with. Like this one.

http://science.howstuffworks.com/nuclear-power.htm

And if I'm really feeling generous that day, I might explain it myself.

cookiemonster

[delta_mu]

Thanks for the answer, but I guess I did not clairfy what I needed. That problem was given to me, and we were told to explain it. We just finished learning about energy. And I am having trouble answering it. So if you oculd try to explain why that I would greatly appreciate it, but if not thanks anyway.

[Chi Meson]

The answer has to do with the fact that a nuclear power plant is not a "machine." A machine is a device that manipulates an input force. A nuke plant is an "energy converter device" that takes the energy bound by uranium atoms and releases it. Compare that to a lever. Ever seen a lever go boom?

[delta_mu]

Thank You So Much!