Answer:
Star A is 3.343 times hotter than star B.
Explanation:
It is known that the luminosity of a star is proportional to its effective temperature to the 4th power. This means that the ratio between the brightness of stars A and B is equal to the ratio between their temperatures to the 4th power:
![125=T^4\\T=\sqrt[4]{125}\\T=3.343](https://tex.z-dn.net/?f=125%3DT%5E4%5C%5CT%3D%5Csqrt%5B4%5D%7B125%7D%5C%5CT%3D3.343)
Star A is 3.343 times hotter than star B.
Eratosthenes lived in Alexandria of Egypt in BC 240.. He found out the diameter of Earth thorough geometry and mathematics. Hope this helps .. :)
Normal Faults happen because of tension
The correct answer is A) the direction of ocean currents.
Ocean currents ,with their movement, contribute to the movement of the lower air masses. The lower air masses are practically like a shadow of the ocean currents and follow it's movement, thus winds are created by the ocean currents. Also it is important to notice, that the winds can be warm and cold, dry and wet, this all depends on the temperature of the ocean currents, as well as where are they moving in the ocean waters.
Earth scientists can predict potential disasters such as hurricanes and more. Earth scientists help us understand our place in the universe while the natural forces shape our environment.
