-Geographic north and south poles are determined by the earth's spin.
-Magnetic north and south is determined by the direction a compass points.
Hope this helps,
kwrob
Answer:
I'm pretty sure it's all of them i'm not completely sure though hope it helps anyways! :)
We know the equation of motion , 
, where s is the displacement, u is the initial velocity, a is the acceleration and t is the time taken.
In this case a brick is dropped from rest from a height of 4.9 m, so displacement, s = 4.9 m
Since the brick is dropped from rest, u = 0 m/s
Acceleration on brick = acceleration due to gravity = 9.81 
Substituting
So the brick will reach ground after 1 second.
Electrons are added to your body as you shuffle your feet across the room. Then the shock is when they discharge from your body to the doorknob when you touch it.
Atom absorbs energy when it goes into higher orbitals from their "Ground States"
Hope this helps!
