Reply To: Chemistry/Biology/Physics/Biochemistry/Math

feivel-

Pegger is absolutely right – it doesn’t necessarily have to be gravity. However, on our planet, that is the ONLY acceleration means we have (we do not have a string tied around us and the center of the earth!).

That is basic, my friend. Look at the frictional force equation I wrote before – that’s the force due to friction. Nothing more, nothing less. There needs to be an acceleration for the normal force to be >0; that comes from the acceleration due to gravity, in our case of us standing on planet earth.

And mto – it does not matter; as long as each electron in the orbital have opposite values.