The sun radiates energy at the rate 3.8*10^26w. the source of this energy is fusion, a nuclear reaction in which mass is transformed into energy. the mass of the sun is 2.0*10^30kg. part a) how much mass does the sun lose each year? (delta m)

part b) what percentage is this of the sun's total mass?

(deltam/m) %

part c) estimate the lifetime of the sun. (t)

Explanation:

P = Power of the Sun =

c = Speed of light =

Annual energy per year is given by

From the mass equivalence relation we have

Mass lost in a year is

Percentage mass is given by

The percentage is

Number of years would be the total mass of the sun divided by the mass lost in 1 year

The number of years would be

i think they are all correct

explanation:

they seem good

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