Re: At last

Posted by Uncle Al on Jul 20, 2002 at 21:52

Re: At last (bobbapink)

Calculating gravitational self-energy isn't much of an equation. Note that the proffered model isn't quite right because it assumes uniform density throughout the sphere - a better answer will give a slightly bigger number for a given radius of any composition, and certainly more so with Earth's Mars-sized iron core covered with less dense rock. Also note that disassembling a planet with an explosion is silly. You'd need a supernova's energy output to disassemble an astronomically large mass.

Why is high school math a big deal? If you can't get a 4 or 5 on the SAT AP calculus test you are in for a world of boring hurt in college freshman calculus.

Uncle Al
(Do something naughty to physics)

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