Like all stars our sun converts mass into energy which, Ask an Expert

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Like all stars, our sun converts mass into energy which radiates (spherically) in all directions. At the radius of Earth the radiant energy is 1.4 Watts/m^2.

Calculate the rate at which the sun is losing mass

Assuming this rate is constant, how long would it be until the sun used up all of it's mass?

(The area of a sphere is 4pieR^2)

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