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 natural geography of New Zealand supplies its people with the major sources of income which are timber, tourism and natural gas.
Options B, C and E are correct.
<h3>What is geography?</h3>
The examination of relation of places, people and their environments in which they are surviving is called the geography.
- New Zealand is one of the regions founded in the southeastern side of the Pacific Ocean. It is a location composed mountainous islands being separated into two islands namely, Northern and Southern.
- It is having rich wildlife biodiversity which could not be seen in any part of the world. It is being visited by more than two millions tourists every year and is very famous for natural gas and timber related products.
Therefore, apart from the options A and D, all options are correct.
Learn more about geography in the related link:
brainly.com/question/1462956
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Answer:
There were more similarities than differences as both of them were members of military class, whose main obligation was to serve the ruler. They were both included in a system known to us as feudal system.
Explanation:
As we said both in Japan and Europe feudal system was functioning for a long period of time. They both had to participate in military campaigns when called upon by their ruler. Also, they both respected certain codes, known as bushido among samurais and code of chivalry. It is interesting that we have examples of samurai and knights being women.
30 °C is around the average temperature during summer
