The surface of the Sun has a temperature of5500 °C. (a) Treating the Sun as a perfect blackbody, with an emissivity of 1.0, find the power that it radiates into space. The radius ofthe Sun is 7.0 * 108m, and the temperature of space can be takento be 3.0 K. (b) The solar constant is the number of watts of sunlightpower falling on a square meter of the Earth’s upper atmosphere.Use your result from part (a) to calculate the solar constant, giventhat the distance from the Sun to the Earth is 1.5 * 1011m.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
The surface of the Sun has a temperature of
5500 °C. (a) Treating the Sun as a perfect blackbody, with an emissivity of 1.0, find the power that it
the Sun is 7.0 * 108m, and the temperature of space can be taken
to be 3.0 K. (b) The solar constant is the number of watts of sunlight
power falling on a square meter of the Earth’s upper atmosphere.
Use your result from part (a) to calculate the solar constant, given
that the distance from the Sun to the Earth is 1.5 * 1011m.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
