If we assume that the metallic plates are perfect conductors, the electric field in their interiors must vanish. given that the electric field e⃗ due to a charged sheet with surface charge +σ is given by e=σ2ϵ0, and that it points away from the plane of the sheet, how can the condition that the electric field in plate i vanishes be written?

here the charge density of metal plate is given as

now the electric field is given Gauss law

now here E = constant

so we will have

Since total area on both sides of plate will be double and becomes 2A

Now if we will find the electric field inside the metal plate

Then as we know that total charge inside the plate will always be zero

so we have

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.