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iogann1982 [59]
3 years ago
6

Will mark brainliest for the first person who answered correctly Where does geothermal energy come from? -Radioactive processes

in nuclear power stations. -Radioactive processes within the Earth. -The decay of organic material. -The movement of the tides.
Physics
2 answers:
egoroff_w [7]3 years ago
7 0

the answer is radioactive processes within the Earth.

Gennadij [26K]3 years ago
7 0

Answer:

Radioactive processes within the Earth.

Explanation:

many of Earth’s heat is constantly generated by the decay of radioactive isotopes, such as potassium-40 and thorium-232.

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Both are at the side of the spectrum that has the lower frequency

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An iron ball is dropped at a height of 10 m from the surface of the moon.
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In 1996, astronomers discovered an icy object beyond pluto that was given the designation 1996 tl 66. it has a semimajor axis of
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Answer : 2446 years.

Explanation :

Length of semi major axis is, a=84\ au= 1.496\times 10^{11}\ m

According to Kepler's third law, square of time period of an orbit is directly proportional to the cube of the semi major axis.

i.e T^2=\dfrac{4\pi^2}{GM}a^3

where G is gravitational constant

M is  mass of sun, M=1.98\times 10^{30}\ Kg

So, T^2=\dfrac{4\times (3.14)^2}{6.6\times 10^{-11}Nm^2/Kg\times 1.98\times 10^{30}\Kg}

T^2=3\times 10^{-19}\times(84\times 1.496\times 10^{11})^3

T^2=3\times 10^{-19}\times 1984415.6\times 10^{33}

T^2=59532469.8\times 10^{14}\ s

T=7715.7\times 10^7\ s

since, 1\ sec=3.17\times 10^{-8}\ years

So, orbital period is approximately 2446 years.

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