# The total solar energy

**Chemistry**Level pending

The solar constant, the amount of solar energy reaching the Earth per unit time and area above the atmosphere and an element of area perpendicular to the direction from sunlight is 1.36 kW / m². For an element of area whose normal makes a angle q with the direction of the solar rays, the energy flow varies with cos theta. a) Calculate the total amount of solar energy reaching the Earth per day.