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Anuta_ua [19.1K]
3 years ago
11

Sirius has an apparent magnitude of -1.5. Canopus has an apparent magnitude of -0.7. Which of the following statements is true?

Physics
1 answer:
Bumek [7]3 years ago
8 0
In my opinion it's,
Sirius is brighter than Canopus
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True or false. both the incident and reflected ray lie in the same plane. ​
olga2289 [7]

Answer:

I think its false...........

4 0
4 years ago
By what factor does the peak frequency change if the celsius temperature of an object is doubled from 20.0 ∘c to 40.0 ∘c?
mart [117]

Answer:

it increases by a factor 1.07

Explanation:

The peak wavelength of an object is given by Wien's displacement law:

\lambda=\frac{b}{T} (1)

where

b is the Wien's displacement constant

T is the temperature (in Kelvins) of the object

given the relationship between frequency and wavelength of an electromagnetic wave:

f=\frac{c}{\lambda}

where c is the speed of light, we can rewrite (1) as

\frac{c}{f}=\frac{b}{T}\\f=\frac{Tc}{b}

So the peak frequency is directly proportional to the temperature in Kelvin.

In this problem, the temperature of the object changes from

T_1 = 20.0^{\circ}+273=293 K

to

T_2 = 40.0^{\circ}+273 = 313 K

so the peak frequency changes by a factor

\frac{f_2}{f_1} \propto \frac{T_2}{T_1}=\frac{313 K}{293 K}=1.07

8 0
3 years ago
If one charge is quadrupled, what happens to the force between charges?
cestrela7 [59]

The force between charges is proportional to the product of
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The same identical argument applies to the gravitational force
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3 0
3 years ago
The surface bedrock of mt. marcy, new york, is composed primarily of which rock?
pashok25 [27]
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Answer:

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8 0
3 years ago
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