Answer:
Two stars (a and b) can have the same luminosity, but different surface area and temperature if the following condition is met:
(T_a^4)(R_a^2) = (T_b^4)(R_b^2)
Explanation:
The luminosity of a star is the total energy that produces in one second. It depends on the size of the star and its surface temperature.
L = σ(T^4)(4πR^2)
L is the luminosity f the star, T is the temperature of the surface of the star and R is its radius.
Two stars can have the same luminosity if the relation between the radius and the surface temperature is maintained.
To see this lets suposed you have 2 stars, a and b, and the luminosities of each one of them:
L_a = σ(T_a^4)(4πR_a^2)
L_b = σ(T_b^4)(4πR_b^2)
you can assume that L_a and L_b are equal:
σ(T_a^4)(4πR_a^2) = σ(T_b^4)(4πR_b^2)
Now, you can cancel the constants:
(T_a^4)(R_a^2) = (T_b^4)(R_b^2)
as long as this relation between a and b is true, then the luminosity can be the same.
The main reason is that the USA is in the Northern Hemisphere & Australia is in the Southern Hemisphere. It has all to do with the tilt of the earth as it revolves around the Sun. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.
The feds provides banking services for providing<span> financial </span>services<span> to depository institutions. </span>
Explanation:
1. Ethanol is a renewable fuel and is used in agricultural feed like , sugarcane , potato , corn , etc .
Hence , it is important to use ethanol as a fuel .
2.
Yes , it is necessary for each and every individual to use ethanol fuel for their day to day activities .
3.
Yes ,
the production of ethanol can be subsidized , by giving the tax rebate to the workers of the bio ethanol .
For example , in 2005 and 2009 , 17 billion USA dollars ethanol were subsidized .
