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Advocard [28]
3 years ago
12

If two stars differ by 9.6 magnitudes what is their flux ratio?

Physics
1 answer:
galina1969 [7]3 years ago
6 0
Borrowing from the tradition of the ancient Greeks, the first ones
who tried to describe the brightness of stars with numbers ...

                        6 magnitudes  =  a ratio of 100 .

In more modern notation . . .

                       1 magnitude = ratio of    (100) ^ (1/6)

                                             =  about  2.154...

                 9.6 magnitudes  =  (100) ^ (9.6/6) 

                                             =  100¹·⁶ 

                                             =   1,584.89  (rounded)
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A power company charges its customers for electricity based upon which one of the following?a. powerb. energyc. power per unit o
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B. Energy

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<h3>Explanation:</h3>

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A particular spiral galaxy can be approximated by a thin disk-like volume 62 Thousand Light Years in radius and 7 Hundred Light
SVETLANKA909090 [29]

Answer:

Approximate linear dimension is 2 light years.

Explanation:

Radius of the spiral galaxy r = 62000 LY

Thickness of the galaxy h = 700 LY

Volume of the galaxy = πr²h

                                   = (3.14)(62000)²(700)

                                   = (3.14)(62)²(7)(10)⁸

                                   = 84568×10⁸

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Since galaxy contains number of stars = 1078 billion stars ≈ 1.078\times 10^{12}

Now volume covered by each star of the galaxy = \frac{\text{Total volume of the galaxy}}{\text{Number of stars}}

= \frac{8.45\times 10^{12} }{1.078\times 10^{12}}

= 7.839 Light Years

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= (\text{Average volume per star})^{\frac{1}{3}}

= (7.839)^{\frac{1}{3}}

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Therefore, approximate linear dimension is 2 light years.

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