DeVuse » energy http://devuse.com Business, Technology, Finance, Automotive Thu, 02 Sep 2010 17:15:03 +0000 en hourly 1 http://wordpress.org/?v=3.0 Energy, what on the earth is energy http://devuse.com/energy-trend/energy-what-on-the-earth-is-energy.html http://devuse.com/energy-trend/energy-what-on-the-earth-is-energy.html#comments Thu, 26 Aug 2010 15:55:31 +0000 Dean Anderson http://devuse.com/?p=5434 Energy. What on the earth is energy? Is it only what we are taught in physics class or is it anything more?

Answer:
It’s the power needed to perform any act. by anything. things, humans, animals, planets…

Every thing in the planet have energy, some have very little energy and some, well, a lot of energy.

Energy have a lot of types, and ya like you were thought in physics class.
the only “magical” thing about energy, i think, that it never disappears, it only transform to different kind of energy.

What do you think?

]]> http://devuse.com/energy-trend/energy-what-on-the-earth-is-energy.html/feed 5 How Does Conservation of Energy Related to Roller Coasters? http://devuse.com/energy-trend/how-does-conservation-of-energy-related-to-roller-coasters.html http://devuse.com/energy-trend/how-does-conservation-of-energy-related-to-roller-coasters.html#comments Thu, 26 Aug 2010 15:52:23 +0000 Dean Anderson http://devuse.com/?p=5429 When going down a hill, is potential energy converted to kinetic energy or is that the other way around? And how does conservation of energy related to roller coasters?

Answer by Shivyboy
When going down a hill yes gravitational potential energy is converted into kinetic energy. It relates to roller coasters because the same energy is in the roller coaster, it only depends on whether it is stored as kinetic or gravitational potential energy. This means that at any point the roller coaster has the same amount of energy as it started with, if we account that all forms of energy loss are negligible, which we would have to in these types of questions.

What do you think?

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