Answer:

Explanation:
From the question we are told that:
Dimension of Wall:

Electric field 
Angle 
Generally the equation for electric Flux is mathematically given by



Spring tides occur twice each lunar month all year long without regard to the season. Neap tides, which also occur twice a month, happen when the sun and moon are at right angles to each other. ... The moon appears full when the Earth is between the moon and the sun
An insulator does not have electrons that are free to move, and a conductor does.
<span>Once the presence of certain substances in a sample is known, the study of their absolute or relative abundance can help in determining specific properties. Gravimetric analysis yields more accurate data about the composition of a sample than volumetric analysis but also takes more time to perform in the laboratory.</span>