The surface temperature of a red star is lower than the surface temperature of a yellow star.
Explanation:
For a red star, the peak of the wavelength of the emitted light is in the red spectrum, therefore the average peak wavelength is:
The corresponding temperature at the surface of the star can be found by using Wien's displacement law:
where
is a constant. Substituting, we find
For a yellow star, the peak of the wavelength of the emitted light is in the yellow spectrum, therefore the average peak wavelength is:
So we can use again the same equation to find the corresponding surface temperature of a yellow star:
Therefore, we see that the surface temperature of a red star is lower than the surface temperature of a yellow star.
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Answer:
We understand that two like poles of magnet repel each other. Maglev train is based on the same concept. The train levitates above the tracks because of repulsion between one set of magnets. One set of magnets lifts the train upwards causing it to levitate or float above tracks and other set of magnets causes it to move forward. This method enables less consumption of energy as loss of energy due to friction is negligible and also, high speed can be achieved.
Answer:
I think it is " Tony no longer want to be friends with felix."
Explanation:
that to me has conflict if i am wrong im so sorry
Answer:
From the object at higher temperature to the object at lower temperature
Explanation:
Heat corresponds to the transfer of thermal energy between two objects. Temperature gives a measure of "how much thermal energy an object has": the higher the temperature, the faster the molecules inside the object, the more thermal energy the object has. Therefore, an object at higher temperature has more thermal energy than an object at lower temperature, so the transfer of heat goes from the object at higher temperature to the object at lower temperature.
