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4 years ago

If two stars are the same distance from us and they both appear to be the same

Physics

2 answers:

34kurt4 years ago

8 0

It is a, apparent magnitude

Ivan4 years ago

6 0

Answer:

The answer is A they have the same apparent magnitude

Explanation:

They can have different absolute magnitudes, with the brighter star being further away than the other. These can have the same apparent magnitude as seen from Earth, which also tells you that apparent magnitude depends on the location of the observer.

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Suppose you are an astronomer, and a child asks you to explain the light given off by stars. In your own words, describe the rel

Nadya [2.5K]

Well, i would tell the kid that light is electromagnetic radiation which is visible. The frequency and wavelength is just right so the radiation becomes visible, and that visible radiation goes away from the star and reaches earth It also depends on the age of the child and the comprehension level

3 0

3 years ago

Read 2 more answers

What current risks are there to Earth from NEOs?

velikii [3]

current risks are there to Earth from NEO

4 0

3 years ago

What is refraction and reflection

timofeeve [1]

Answer:

Reflection is simply the property of a light that rebounds or bounces back after hitting a surface.

Refraction is when the light, which passes through a surface, undergoes some changes in appearance whenever it usually passes through a medium.

3 0

3 years ago

A disk initially rotated counterclockwise at 1.0 rad/s, but has a counterclockwise angular acceleration of 0.50 rad/s^2 for 2 se

Mumz [18]

Answer:

Initial angular position of the disc is 3 radian

Explanation:

As we know that the angular acceleration of the disc is given as

$\alpha = 0.50 rad/s^2$

initial angular speed is given as

$\omega = 1 rad/s$

now we know that angular displacement of the disc is given as

$\theta = \omega t + \frac{1}{2}\alpha t^2$

$\theta = 1(2) + \frac{1}{2}(0.5)(2^2)$

$\theta = 3 rad$

now we have

$\theta_f - \theta_i = 3 rad$

$6 rad - \theta_i = 3$

$\theta_i = 3 ard$

8 0

3 years ago

For the electric power transmission system shown in the figure above, what is the ratio ns/np for the step-up transformer? assum

Ann [662]

I am attaching the missing figure

If we assume 100% efficiency, this means that the input power of the transformer must be equal to the output power

We divide output/input

240,000/12,000 = 20

This means that the transformer has a turns ratio of 1:20

<span>ns/np = 20/1 = 20

The voltage is amplified 20 times by the transformer, but this also means that the current decreases by a factor of 20, so the total power remains the same.</span>

7 0

3 years ago