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NNADVOKAT [17]
3 years ago
5

Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. how can that be?

Physics
2 answers:
Black_prince [1.1K]3 years ago
4 0

Answer:

By the force of universal attraction

Explanation:

The gravitational attraction of a large body (planet) on an object on its surface can be calculated with the same equation of universal gravitation

       F = G m1 m2 / r²

Where G is the Universal gravitation costing 6.67 10⁻¹¹ N m²/Kg², m1 the mass of the planet, r the distance that we can take equal to the average radius of the planet and m2 the mass of the object that we can leave out, what remains of the equation is called acceleration of the planet's gravity, let's write the equation explicitly

        g = G m1 / r²

We look for the data of the two planets, for the earth, they are 5.98 10²⁴ kg and 6.37 10⁶ m for their mass and radius, respectively; for Uranus we have 8.68 10²⁵ Kg and 2.54 10⁷ m; Let's calculate the values ​​of the acceleration of gravity for each

Earth

       g = 6.67 10 -11 5.98 10 24 / (6.37 10 6) 2

       g = 9.87 m / s

Uranus

       g2 = 6.67 10 -11 8.68 10 25 / (2.54 10 7) 2

       g2 = 8.97 m / s

We can see that the gravity of Uranus is less than the gravity of the earth.

This could be intuited since the force of gravity depends on the inverse of the square of the distance and only proportionally with the mass.

Anarel [89]3 years ago
3 0
It has more mass, yes. But it has less of a gravitational pull because it is farther away from the sun than the Earth is
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Please help me with this question :
aalyn [17]

Answer:

  • 514.27 ( wavelength )

the color is green

  • 602.93 nm  ( orange color )

the observation is that there is a change of visible color

Explanation:

A) wavelength of visible light that is most strongly reflected from a point on a soap

refraction n = 1.33

wall thickness (t) = 290 nm

2nt = (2m +1 ) ∝/2 -----equation 1

note when m = 0

therefore ∝ =  4nt/ 1 = 4 * 1.33 * 290 = 1542.8nm we will discard this

when m = 1

equation 1 becomes

∝ = 4nt/3 =( 4 * 1.33 * 290) /  3 = 1542.8 / 3 = 514.27 ( wavelength )

the color is green

B) the wavelength when the wall thickness is 340 nm

∝ = 4nt / 2m +1

where m = 1

∝ = (4 * 1.33 * 340 ) / 3  = 1808.8 / 3 = 602.93 nm  ( orange color )

the observation is that there is a change of visible color

7 0
3 years ago
By the term universe astronomers mean
OverLord2011 [107]

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6 0
4 years ago
By what factor would your weight be multiplied if the earth were1/2 as massavise and the diameter was unchanged
Nutka1998 [239]
<span>Let F be the force of gravity, G be the gravitational constant, M be the mass of the earth, m your mass and r the radius of the earth, then: 

F = G(Mm / (4(pi)*r^2)) 

The above expression gives the force that you feel on the earth's surface, as it is today! 

Let us now double the mass of the earth and decrease its diameter to half its original size. 

This is the same as replacing M with 2M and r with r/2. 

Now the gravitational force (F' ) on the new earth's surface is given by: 

F' = G(2Mm / (4(pi)(r/2)^2)) = 2G(Mm / ((1/4)*4(pi)*r^2)) = 8G(Mm / (4(pi)*r^2)) = 8F 

So: 

F' = 8F 

This implies that the force that you would feel pulling you down (your weight) would increase by 800%! 

You would be 8 times heavier on this "new" earth!</span>
4 0
3 years ago
Do mirrors reflect light
777dan777 [17]

Answer:

Yes, Mirror are a surface that reflects light more perfectly than ordinary objects.

Explanation:

8 0
3 years ago
Two asteroids are 75000 m apart one has a mass of 8 x 10^7 kg if the force of gravity between them is 1.14 what is the mass of t
vaieri [72.5K]
I’m going to say B

I hope this helped
4 0
3 years ago
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