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erma4kov [3.2K]
3 years ago
9

We estimate the mass of the galaxy by observations of its ________ curve.

Physics
1 answer:
seropon [69]3 years ago
8 0
The appropriate response is the rotation. There are most likely no less than 100 billion planets in the Milky Way. The Solar System is situated inside the circle, around 26,000 light-years from the Galactic Center, on the inward edge of one of the winding molded centralizations of gas and tidies called the Orion Arm.
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How are the layers of the atmosphere separated
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In a semiclassical model of the hydrogen atom, the electron orbits the proton at a distance of 0.053 nm. Part A What is the elec
Bezzdna [24]

Answer with Explanation:

We are given that

r=0.053 nm=0.053\times 10^{-9} m

1 nm=10^{-9} m

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a.We have to find the electric  potential of the proton at the position of the electron.

We know that the electric potential

V=\frac{kq}{r}

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V=\frac{9\times 10^9\times 1.6\times 10^{-19}}{0.053\times 10^{-9}}

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B.Potential energy of electron,U=\frac{kq_e q_p}{r}

Where

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Using the formula

U=\frac{9\times 10^9\times (-1.6\times 10^{-19}\times 1.6\times 10^{-19}}{0.053\times 10^{-9}}

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8 0
3 years ago
The Moon orbits Earth in an average of p = 27.3 days at an average distance of a =384,000 kilometers. Using Newton’s version of
Korvikt [17]

Answer:

The mass of the earth, M=6.023\times 10^{24}\ kg

Explanation:

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T^2=\dfrac{4\pi^2}{GM}r^3

M=\dfrac{4\pi^2r^3}{T^2G}

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Greeley [361]

Answer:

this is impossible for me

Explanation:

7 0
3 years ago
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