I think it's A. Pressure and heat built up in the magma chamber.
Answer:
Hey
Your answer would be
The moon is not visible
due to Earth's shadow=lunar eclipse
The sun is not visible due
to the moon=solar eclipse
The moon is on the side of
Earth opposite the sun=new moon
The moon and sun are on
the same side of Earth=full mon
You need to finish the question
Answer:

Explanation:
The differential electric field
due to differential charge
at distance
from the origin is

but since
we have


integrating this from
to
we get

![E = 4k[(x_0+L)-x_0]](https://tex.z-dn.net/?f=E%20%3D%204k%5B%28x_0%2BL%29-x_0%5D)

putting in
and
we get
