The density of mercury is 13600 kg/m3 at 0°C. what is its density at temperature 100°C

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

did yall get answers for this yet