Q 1.3) Check that the ratio ke2/G memp is dimensionless. Lookup a Table of Physical Constants and determine the value of this ratio. What does the ratio signify?
The given ratio is Where G= Gravitational constant. Its unit is = Masses of electron and proton and their unit is kg. e = Electric charge. Its unit is C.
Therefore, the unit of the given ratio
Hence, the given ratio is dimensionless. WAR
Hence, the numerical value of the given ratio is
This is the ratio of electric force to the gravitational force between a proton and an electron, keeping distance between them constant.