Consider a star that is a sphere with a radius of 6.32 108 m and an average surface temperature of 5350 K. Determine the amount by which the star's thermal radiation increases the entropy of the entire universe each second. Assume that the star is a perfect blackbody, and that the average temperature of the rest of the universe is 2.73 K. Do not consider the thermal radiation absorbed by the star from the rest of the universe. J/K

The value is  

Explanation:

From the we are told that

   The radius of the sphere is

   The temperature is

    The average temperature of the rest of the universe is  

Generally the change in entropy of the entire universe per second is mathematically represented as

Here is the entropy of the rest of the universe which is mathematically represented as

Here Q is the quantity of heat radiated by the star which is mathematically represented as

Here is the Stefan-Boltzmann constant with value  

=>        

=>        

So

=>  

Here is the entropy of the rest of the universe which is mathematically represented as

=>  

=>  

So

=>  

scientific laws are the result of testing theories and proving them to be facts.

unbalanced force

explanation: