Question about calculating energy flux of a star

[gk636]

Question: "Consider two stars, Star A and Star B. Star A has a temperature of 4505 K, and Star B has a temperature of 8903 K. Star B emits ___ times more energy flux than Star A".

 

 

I'm just not sure how to do the calculations/set up the problem, I'm taking an online class and the professor has provided little to no details about specific calculations (it is a lab class).

[John Cuthber]

Have you tried google?

- there's nothing special about stars in this problem.

[gk636]

Yes, I have tried google and it hasn't been helpful. I am just unsure of how to set up and do the equation.

[John Cuthber]

Do you know what equation you need to look at?