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AfilCa [17]
3 years ago
14

(30 Points) The peak intensity of radiation from a star named Sigma is 2 x 10^6 nm. What is the average surface temperature of S

igma rounded to the nearest whole number?
1.45 K
58 K
1,450 K
5.8 x 10^6 K
Physics
1 answer:
ivolga24 [154]3 years ago
5 0

The surface temperature of the star is 1.45 K

Explanation:

The star can be thought as a black-body; the relationship between surface temperature and peak wavelength for black-body radiation is given by Wien's displacement law:

\lambda T = b

where

\lambda is the peak wavelength

T is the surface temperature (in Kelvin)

b=2.898\cdot 10^{-3} m\cdot K is Wien's displacement constant

For the star in this problem, we have

\lambda=2\cdot 10^6 nm = 2\cdot 10^{-3} m

Therefore, we can re-arrange the equation to find the surface temperature:

T=\frac{b}{\lambda}=\frac{2.898\cdot 10^{-3}}{2\cdot 10^{-3}}=1.45 K

Learn more about temperature:

brainly.com/question/1603430

brainly.com/question/4370740

#LearnwithBrainly

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A particular 12 V car battery can send a total charge of 110 A·h (ampere-hours) through a circuit, from one terminal to the othe
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<h2>Answer:</h2>

(a) 3.96 x 10⁵C

(b) 4.752 x 10⁶ J

<h2>Explanation:</h2>

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