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Physics
Physics
Problem
Star X has radius
2
R
⊙
2R_{\odot}
2
R
⊙
and surface temperature
4000
K
4000\,\text{K}
4000
K
. Star Y has radius
R
⊙
R_{\odot}
R
⊙
and surface temperature
8000
K
8000\,\text{K}
8000
K
. What is the ratio of their total power outputs
P
Y
/
P
X
P_Y/P_X
P
Y
/
P
X
? a)
8
8
8
b)
1
1
1
c)
4
4
4
d)
2
2
2
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