Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm, and each of them has an area of 190 mm^2. how much charge must be transferred from one plate to the other if 1.1 nj of energy are to be stored in the plates? ( ε0 = 8.85 × 10^-12 c2/n · m^2)

Explanation:

The capacitance of the parallel-plate capacitor is given by:

where

is the vacuum permittivity

is the area of the plates

is the separation between the plates

Substituting,

The energy stored in the capacitor is given by

Since we know the energy

we can re-arrange the formula to find the charge, Q:

battery with hi vtge high val resist in series

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this