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Leya [2.2K]
3 years ago
14

How do scientists determine motion of objects in the universe??

Physics
2 answers:
Katen [24]3 years ago
5 0
Usually, Scientists use "Parallax Method" in order to determine the different positions of an object

Hope this helps!
DerKrebs [107]3 years ago
3 0

Answer: By Doppler effect

Explanation:

The spectrum of the objects in the universe such as stars and galaxies is taken and studied. The apparent change in the frequency/wavelength of the light suggests the motion of these objects.

If the apparent frequency is greater, the light would be blue -shifted which means it is moving towards Earth and if it is red shifted, it would be moving away from the earth. This is apparent change in observed frequency is known as Doppler's effect which studied to determine the motion of objects in the universe.

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Consider a pendulum of length 3. 171 m. The acceleration of gravity is 9. 832 m/s2. A) what is its period at the north pole?answ
ch4aika [34]

The period of the pendulum of length 3. 171 m when acceleration of gravity is 9. 832 m/s, is 3.57 seconds.

<h3>What is time period of pendulum?</h3>

Pendulum is the body which is pivoted to a point and perform back and forth motion around that point by swinging due to the influence of gravity.

The time period of a pendulum is the time taken by it to complete one cycle of swing left to right and right to left.

It can be given as,

T=2\pi \sqrt{\dfrac{L}{g}}

Here, (g) is the gravitational force of Earth and (L) is the length of the pendulum.

A pendulum of length 3.171 m. The acceleration of gravity is 9.832 m/s2. The period at the north pole is,

T=2\pi \sqrt{\dfrac{3.171}{9.832}}\\T=3.57\rm\; s

Thus, the period of the pendulum of length 3. 171 m when acceleration of gravity is 9. 832 m/s, is 3.57 seconds.

Learn more about the time period of pendulum here;

brainly.com/question/3551146

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4 0
2 years ago
in regions where the suns rays hit at an angle, solar energy is______ and climate is _____. A. Focused, cool. B. Focused, warm.
melisa1 [442]

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B.Focused,warm

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when the rays are focused more energy an area recieves and it is warmer there.

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Consider two solid spheres of radius R with uniformly distributed charge throughout their volumes. Point
8090 [49]

The ratio of the total charge on the charges, Q2/Q1 is; 9

<h3>Electric field and Total Charge</h3>

The electric field due to a charge is directly proportional to its magnitude and inversely proportional to the square of the distance to such point;

Since, E1 = E2, it follows that;

  • Q1/(d1)² = Q2/(d2)²

Where, d1 = 0.5 and d2 = 1.5

  • Q1/(0.5)² = Q2/(1.5)²

  • Q1/0.25 = Q2/2.25

  • Hence, Q2/Q1 = 2.25/0.25

Q2/Q1 = 9.

Read more on electric fields;

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