The sun will most likely illuminate Earth equally on both
poles during September and March. On these months, Earth will not be tilted
toward or away from the sun. This results to both poles receiving nearly the
same amount of light, which means that the length of days and nights are equal
all over Earth. This event is referred to as Equinoxes. During March, it is
called the Vernal Equinox, while during September, it is called the Autumnal
Equinox.
The potential energy is defined as the energy is contained in the body due to the height over the surface of the earth and it is calculated from the equation
<em>where:</em>
PE: the potential energy in Joules.
m: the mass of the body in kg.
g: the acceleration due to the gravity in m/
h: the height of the body over the earth in meters.
