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Lera25 [3.4K]
3 years ago
12

What happens to light waves from a star as the star moves toward Earth?

Physics
2 answers:
Ksivusya [100]3 years ago
4 0

Answer:

The other person is right, the answer is they appear to shift towards blue.

Explanation:

Musya8 [376]3 years ago
3 0
This shifts the star’s spectral lines toward the blue end of the spectrum. If the star is moving away from us, it’s waves are effectively stretched out when they reach earth, increasing their wavelength. This shifts the star’s spectral lines toward the red end of the spectrum.
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Who discovered the laws of planter motion ?
MatroZZZ [7]

Answer:

Johannes Kepler

Explanation:

whose analysis of the observations of the 16th-century

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3 years ago
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Below are four statements about acceleration. Which statement is not correct? A Acceleration always involves changing speed. B C
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Answer:

A. Acceleration always involves changing speed.

Explanation:

Acceleration is defined as the rate of change of velocity.

Velocity is a vector quantity and is defined as speed in a given direction. Therefore, when any or both of the components of velocity is changing with time, a body is said to be accelerating i.e. acceleration involves a change of speed or change in direction, or a change in both speed and direction.

Considering the statements:

A. Acceleration always involves changing speed is false because acceleration can occur when speed is constant but direction is changing.

B. Changing direction always involves acceleration is true because, a change in direction results in a change in velocity.

C Changing speed always involves acceleration is true because, changing speed results in a change in velocity.

D. Circular motion always involves acceleration is true because in circular motion the direction is always changing, and this results in a change in velocity

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3 years ago
What is comma please plz me.!!​
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Answer:

A comma.....

Explanation:

Looks like this (,), and can be used if you have run-on sentences.

I hope this helps :)

7 0
3 years ago
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Sophia was studying with Maalik about the layers of the Earth. They were given several different statements about the layers. Wh
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A 50,0 g silver spoon at 20.0°C is placed in a cup of coffee at
My name is Ann [436]

The heat capacity of the silver spoon at the given temperature difference is 817.65 J.

<h3>Heat capacity of the silver spoon</h3>

The heat capacity of theb silver spoon is the quantity of heat absorbed by the silver spoon. The heat capacity of the silver spoon at the given temperature difference is calculated as follows;

Q = mcΔθ

where;

  • m is mass of the spoon
  • c is specific heat capacity of silver = 0.237 J/g⁰C
  • Δθ is change in temperature

Q = 50 x 0.237 x (89 - 20)

Q = 817.65 J

Thus, the heat capacity of the silver spoon at the given temperature difference is 817.65 J.

Learn more about heat capacity here: brainly.com/question/16559442

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