Aneutral spherical conductor of radius a has a concentric cavity of radius b < a, and is centred on the origin. charge q is then transferred to the sphere by contact . a) determine the electric field everywhere (i. e. as a function of radius r).
b) determine the potential everywhere.
c) what is the capacitance of the sphere?
d) how would these answers change if an additional charge was placed at the origin?

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is