What is the earths primary source of light energy

proxima centauri

moon

sun

wave

i think it is the sun

Earth's primary source of light energy is the sun.

Explanation:

Proxima centauri is located in the southern constellation of centaurus. It is a small low mass star and is 4.243 light years away from the Earth. It means it will take 4.243 years for light to reach earth from Proxima centauri.

So, it is too small and too far away from Earth to act as a source of light energy for Earth.

Moon is not a star and thus not a source of light energy for Earth. It is a natural satellite that permanently revolves around the Earth.

A wave is simply a disturbance or oscillation in the medium. eg. EM waves, sound waves. etc.

Sun is a star at the center of our solar system. It is a huge, spinning sphere of hot plasma. It is only 1.581 * 10⁻⁵ light years away from the Earth and is the primary source of light energy for Earth.

need to see circuit to get time constant

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west