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3 years ago

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

2 answers:

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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This is an example of which scientific practice?

pshichka [43]

The example of the scientific practice is missing here but it should always involve the application of the scientific method.

<h3>What is the scientific method?</h3>

The scientific method is a series of steps by which researchers can collect empirical evidence that enables them to test hypotheses and generate scientific theories.

The scientific method starts with the observation of a given phenomenon from the real world, which then enables the raising of a question that in turn enables the formulation of a plausible explanation called hypothesis.

In conclusion, the example of the scientific practice is missing here but it should always involve the application of the scientific method.

Learn more about the scientific method here:

brainly.com/question/17216882

#SPJ1

8 0

2 years ago

Larry lightweight stands on a pair of bathroom scales each scale reads 300 N what is larry's mass

leonid [27]

Larry's mass is <span>30.6 kg.</span>

7 0

3 years ago

Read 2 more answers

A vw bug is driving north on a striaght two lane road at a constant 38mph and a chevy impala is driving south at 29mph on the sa

DedPeter [7]

The Answer is B. 67mph, north

5 0

3 years ago

The level of water in an olympic size swimming pool (50.0 meters long, 25.0 meters wide, and about 2.00 meters deep) needs to be

Goshia [24]

<span>We need to start by finding the surface area of the pool.
50 meters multiplied by 25 meters gives us 1250 square meters.
1250 square meters multiplied by .065 (6.5 cm in meters) gives us a volume of 81.25 cubic meters of water that needs to be pumped out of the pool.

There are 1000 liters in a cubic meter so this is 81250 liters. Divide by 4.2 to find the number of seconds required to pump out this much water and we get 19345.2 seconds. This equals approximately 5.37 hours.</span>

4 0

3 years ago

Given that the acceleration of gravity at the surface of Mars is0.38 of what it is one Earth, and that Mars' radius is 3400 km,d

evablogger [386]

Answer:

$1.156\times 10^{24}\ kg$

Explanation:

Given:

Gravity of Mars = 0.38 times the gravity at Earth

Gravity of Earth is, $g_{Earth}=9.8\ m/s^2$

Radius of Mars (R) = 3400 km

Mass of mars (M) = ?

We know that, the acceleration due to gravity of a planet of mass 'M' and radius 'R' is given as:

$g=\dfrac{GM}{R^2}$

Now, as per question:

$g_{Mars}=0.68g_{Earth}$

Plug in 9.8 for $g_{Earth}$ and solve for $g_{Mars}$ . This gives,

$g_{Mars}=0.68\times 9.8=6.67\ m/s^2$

Now, plug in this value in the above equation and solve for 'M'. This gives,

$6.67=\frac{6.67\times 10^{-11}M}{(3400\times 10^3)^2}\\\\1.156\times 10^{13}=10^{-11}M\\\\M=\frac{1.156\times 10^{13}}{10^{-11}}\\\\M=1.156\times 10^{24}\ kg$

Therefore, the mass of Mars is $1.156\times 10^{24}\ kg$ .

4 0

3 years ago