Question

The sun radiates about 3.6x10 26 joules of energy each second how much mass does the sun lose each sec.

Answer 1

Use the formula \[E =mc ^{2}\]

Answer 2

how? I have no idea how to do this

Answer 3

It relates the energy radiated (in this case in one second) to the mass lost. The sun generates its energy from nuclear fusion and the products of nuclear fusion are lighter than what goes in. The difference in mass equates to the energy.

Rearrange the equation to get \[m=\frac{ E }{ c ^{2} }\] and you find the mass to be 3.6x10^26 divided by the square of the speed of light. I calculate a mass loss of 4000 000 000 kg per second.