Answer:
E) The centripetal force is always perpendicular to the velocity.
Explanation:
Due to gravity and inertia, the satellite follows a uniform circular motion. In this movement, the velocity is always tangent to the orbit and the centripetal force is directed towards the center. Therefore, there is no net acceleration in the same direction of velocity, which implies that it remains constant.
I think the answer is c because the rest are false
Answer:

Explanation:
As we know that if a charge q is distributed uniformly on the line then its linear charge density is given by

now the electric field due to long line charge at a distance d from it is given as


now the force on the other charge in this electric field is given as

