Answer:D increase in frequency
Explanation:
They both have a magnetic field
A then B, as everything is made of energy and energy pushes the electro magnetic waves into the brain.
Answer:
person is accelerating downwards
Explanation:
We are told that the force of the person standing on the elevator is 800 N acting downwards.
We are also told that the upward force of the elevator on the person is 600 Newtons.
This means that Upward force is lesser than downward force and thus the person is accelerating downwards