2/5×-3/7-1/6×3/2+1/14×2/5
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Answered by
0
Answer:
Step-by-step explanation:
The temperature of a star is 4990 K. Calculate the power per unit area radiated by the star
in 519 nm to 525 nm range.
(a) 0.230 MW/m²
(b) 0.384 MW/m
(c) 0.390 MW/m
(d) 0.220 MW/m
Answered by
1
Answer:
-11/28
Step-by-step explanation:
= 2/5 × -3/7 -1/6 × 3/2 + 1/14 × 2/5
= (2/5 × -3/7) - (1/6 × 3/2) + (1/14 × 2/5)
= -6/35 - 3/12 + 2/70
= -6/35 - 1/4 + 1/35
= -6/35 + 1/35 - 1/4
= (-6+1)/35 - 1/4
= -5/35 - 1/4
= -1/7 - 1/4
= (-4-7)/28
= -11/28
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