Tha atmosphere has no effect on gravity.
C.figure 3 is the answer had the same and got is right
Answer: I maybe wrong but i'm pretty sure its C) Kinetic energy
it allows only a reduced number of electrons to flow through it.
Use pythagorean theorem

to find the opposite side, which is 7.3
so then you can just use inverse sinA=7.3/10 which equals 46.9 degrees