Each plate of an air-filled parallel-plate air capacitor has an area of 0.0040 m2, and the separation of the plates is 0.080 mm. an electric field of 5.3 × 106 v/m is present between the plates. what is the energy density between the plates? (ε0 = 8.85 × 10-12 c2/n · m2)

124.3 J/m^3

Explanation:

The energy density between the plates of a parallel-plate capacitor is given by

where

ε0 = 8.85 × 10-12 C2/N · m2 is the vacuum permittivity

E is the electric field strength

In this problem,

E = 5.3 × 106 V/m

So the energy density is

no sign of dia of fuel cell

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force