The answer is C sorry if it’s wrong
Answer:
The magnitude of the flux of electric field through a square of surface area is zero.
Explanation:

It is given that square box is parallel to yz-plane which has normal vector perpendicular to plane in x-direction. Angle between normal vector of area and electric field is 90°. Substituting in (1)

Answer:
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Explanation:
.... I don’t know but, he will be able to make smarter choices, he will be able to think before he does something, honestly don’t know
This drag force is always opposite to the object's motion, and unlike friction between solid surfaces, the drag force increases as the object moves faster.