The temperature at the surface of the Sun is approximately 5,200 K, and the temperature at the surface of the Earth is approximately 295 K. What entropy change of the Universe occurs when 4.50 103 J of energy is transferred by radiation from the Sun to the Earth

To solve this problem, we will calculate the entropy for both cases, remembering that the concept of entropy is the relationship between the heat released / gained and the temperature. After calculating the entropy in the sun and on the earth we will find the difference between the two. So that,

Entropy at Sun

Replacing,

The entropy at Earth,

The values are,

Replacing at the equation,

Then the total change in entropy will be,

Therefore the entropy change is

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

continuous conducting path for current, power supply