Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
If energy cant be created or destroyed how does a magnet have seemingly endless energy?
For instance if you put two magnets facing each other with opposite poles and hold them within each others magnetic field but you don't let them touch you must exert energy but why doesn't the magnet seem to fade in strength
1 Answer
- Anonymous8 years agoFavorite Answer
Essentially, the potential energy that is used to pull the magnets together is equal to the energy that was put in to tear them apart in the first place. There's always a matching energy somewhere, if that makes sense.
For example, it works in the inverse situation. When you try to push two similar poles together, the energy you put in to push them together is the same as the energy they use to push out against you.
At the end of the day it just appears they have an infinite supply of energy - whereas really it only appears this way because you are putting in energy to the system yourself.
Hope that helps. :)