Physics homework (new)
The neutral hydrogen atom in its normal state behaves in some respects like an electric charge distribution which consists of a point positive charge of magnitude +e surrounded by a charge distribution of negative charge whose density is given by
-p ( r) = C exp(-2 r / a )
Here a is the Bohr radius, 0.53E-8 cm and C is a constant with the value required to make the total charge e.
(a) What is the net electric charge inside a sphere of radius a?
(ANS : 0.68e)
please help & thanx in advance....
use gauss's law and integrate over area of shell...get the E field and find the charge.
I guess you need to know where inside that sphere the nucleus of the hydrogen atom is located.