The potential difference between two parallel plates is related to the electric field intensity by

where

is the potential difference
E is the electric field intensity
d is the distance between the two plates.
In our problem,

and

so we can calculate the potential difference as
Answer:
The nuclei are moving fast with respect to one another
Explanation:
Protons are found in the nucleus together with the neutrons while the electrons normally revolve round it.
However the protons appears fused in a way when electromagnetic force is applied by the nuclei moving at a very fast speed. This fast speed helps to keep the supposed neutrons fused together.
I think it’s green but idk
A material that is malleable and conducts electricity is
most likely is a metal. The answer is letter C.
The physical property that makes wax good for making
sculpture molds is the melting point. The answer is letter D.
Filtration can be used to separate mixtures based on the
size of their particles. The answer is letter D.
The frequency of a beam of light does not change as it passes from a medium to another, only its wavelength and speed are affected. The experimental speed of light in air is:
3 * 10^8 m/s
Therefore, the frequency of this beam of light is:
v = fλ; where v is speed, f is frequency, and λ is the wavelength. The frequency thus is:
3×10⁸ / (670 × 10⁻⁹) = 4.48 × 10¹⁴ Hz
The frequency will remain the same in the solid medium
The speed will then become:
4.48 × 10¹⁴ × 420 × 10⁻⁹ = 1.88 × 10⁸ meters per second