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nata0808 [166]
3 years ago
8

How do scientists use the doppler effect to understand the universe?

Physics
2 answers:
Contact [7]3 years ago
8 0

Answer: The correct answer is A.

The correct answer is C.

Explanation:

Doppler effect is the phenomenon in which there is an apparent change in the frequency of the wave when there is a relative motion between the observer and the source.

Scientists use the Doppler effect to understand the universe by determining the motion of the object.

Therefore, the correct answer is A.

Light changes as the object in space (such as star) moves away from us then the light is shifted to red end. In this case, the light is shifted to longer wavelength.

Light changes as the object in space (such as star) moves towards us then the light is shifted to blue end. In this case, the light is shifted to shorter wavelength.

In the given problem, the when the stars are moving towards each other then the blue shift in the light will occur.

Therefore, the correct option is C.

Nadusha1986 [10]3 years ago
6 0

For the First answer, It would be "A"

The for the next one the answer is "C"

I hope this helps. :)

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Biotic factors are the blank and blank part of the ecosystem
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Abiotic factors are the nonliving physical and chemical components of an ecosystem, while biotic factors are the living components of an ecosystem. Both types of factors affect reproduction and survival

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3 years ago
Can you guys help to understand this graph I'm so confused why I getting wrong?
dedylja [7]
The one fact that needs to be mentioned but isn't given anywhere on or around the graph is: The distance, on the vertical axis, is the distance FROM home. So any point on the graph where the distance is zero ... the point is in the x-axis ... is a point AT home.

Segment D ...
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Segment B ...
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4 0
3 years ago
Read 2 more answers
On a straight, level, two-lane road, two cars moving in opposite directions approach and pass each other. Car A is in the eastbo
ludmilkaskok [199]

Answer:

a) 42 m/s, positive direction (to the east), b) 42 m/s, negative direction (to the west).

Explanation:

a) Let consider that Car A is moving at positive direction. Then, the relative velocity of Car A as seen by the driver of Car B is:

\vec v_{A/B} = \vec v_{A} - \vec v_{B}\\\vec v_{A/B} = 11 \frac{m}{s} \cdot i + 31 \frac{m}{s} \cdot i\\\vec v_{A/B} = 42 \frac{m}{s} \cdot i

42 m/s, positive direction (to the east).

b) The relative velocity of Car B as seen by the drive of Car A is:

\vec v_{B/A} = \vec v_{B} - \vec v_{A}\\\vec v_{B/A} = -31 \frac{m}{s} \cdot i - 11 \frac{m}{s} \cdot i\\\vec v_{B/A} = - 42 \frac{m}{s} \cdot i

42 m/s, negative direction (to the west).

5 0
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How do you do this? Plz help answer
Contact [7]

Answer: Really

Explanation:

Just look it up for this page and maybe you will find an anwser sheet.

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nika2105 [10]

Answer:

Yes

Explanation:

The shape will affect the friction and the way the skateboard moves.

6 0
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