What color will a star be with a surface temperature of 5000 6000 K?
2 answers:
Answer:
The color of a star be with a surface temperature of 5000 6000 K is Yellow.
C is correct option.
Explanation:
According to Wien's displacement law,
The black body radiation will peak at different wavelength due to different temperature.
In mathematical form,
The wavelengths are inversely proportional to the temperature.
According to stellar spectral types
The standard classes
Spectral classes -Temperature - color of stars
M < 3500 K - Red
K - 3500 - 5000 K - Yellow orange
G - 5000 - 6000 K - Yellow
F - 6000 - 7500 K - Yellow white
A - 7500 - 10000 K - white
B - 10000 - 30000 K - Blue white
O - 30000 - 60000 K - Blue
Hence, The color of a star be with a surface temperature of 5000 6000 K is Yellow.
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Answer:
E = 15.7 KJ/mol
Explanation:
The number of vacancies in a metal is given by
n = n₀
They tell us that
n = 5 no
We replace
5 n₀ = n₀ e^{-E/KT}
-E / KT = ln 5
E = KT ln 5
E = 1,381 10⁻²³ 1170 ln 5
E = 2.6 10⁻²⁰ J
To take (J / mol) we multiply between Avogadro's number
E = 2.6 10⁻²⁰ 6.022 10²³
E = 1.57 10⁴ J / mol
E = 15.7 KJ/mol