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velikii [3]
2 years ago
6

Please help I’ll give brainliest

Physics
1 answer:
lilavasa [31]2 years ago
8 0

Answer: AHH PROBABLY THE FIRST OPTION

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The planet Gallifrey has 2 times the gravitational field strength and 2 times the radius of the Earth.
Alexeev081 [22]

The mass of the planet Gallifrey is 8 times the mass of the Earth.

  • let the gravitational field of Earth = g
  • let the radius of the Earth = R
  • gravitational field of Gallifrey = 2g
  • radius of Gallifrey = 2R

<h3>What is gravitational potential energy?</h3>
  • This is the work done in moving an object to a certain distance against gravitational field.

The gravitational field strength of the Earth is given as follows;

g = \frac{GM}{r^2} \\\\G = \frac{gr^2}{M}

The gravitational field strength of the Planet Gallifrey is calculated as follows;

g_2 = \frac{GM_2}{r_2^2}

G = \frac{g_2r_2^2}{M_2} \\\\\frac{g_2r_2^2}{M_2} = \frac{gr^2}{M}\\\\M_2gr^2 = Mg_2r_2^2\\\\M_2 = \frac{Mg_2r_2^2}{gr^2} \\\\M_2 = \frac{M \times 2g \times (2r)^2}{gr^2} \\\\M_2 = \frac{M \times 2g \times 4r^2}{gr^2} \\\\M_2 = 8M

Thus, the mass of the planet Gallifrey is 8 times the mass of the Earth.

Learn more about gravitational field strength here:  brainly.com/question/14080810

4 0
2 years ago
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Answer:

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Explanation:

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3 years ago
What do scientists use to divide the geologic time scale?
dmitriy555 [2]
The use Major changes in mineral deposits in the rock layers. 
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Einstein’s theory of general relativity describes how space and time are connected. What makes this idea a theory?
vredina [299]
B. A hypothesis is just an idea. And can become a Theory if there is some evidence. However a Theory is not a law, but an idea with supportive evidence
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The density of table sugar is 1.59 g/cm3. What is the volume of 7.85 g of sugar?
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\frac{7.85g }{1.59 \frac{g}{ cm^{3} } } = 4.937 cm^{3}
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