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## Homework Statement

Negelcting internal heat sources, the surface Temperature of the Earth is calculated to be 255 K. Its actual mean surface Temperature is 288 K. The additional heating results from the greenhouse effect. Regarding this as an internalk heat source, calculate that heat source as a fraction of the energy absorbed from the Sun.

## Homework Equations

## The Attempt at a Solution

I am not sure what I am supposed to do exactly, do I just work out the differnect in Temperature and put it over the final temperature (ie [tex]\frac{33}{288}[/tex]) or do I need to work out the energy in Joules using equations?

TFM