Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 10 solar masses. A star orbiting near the galaxy's periphery is 5.6 x 10* light-years from its center. (a) What should the orbital period (in y) of that star be? (b) If its period is 5.3 x 107 years instead, what is the mass (in solar masses) of the galaxy? Such calculations are used to imply the existence of other matter, such as a very massive black hole at the center of the Milky Way. solar masses

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 10…

A: (a) orbital period of the star T=2πr3GM=2π6.0×104 ly39.461×1015 m1 ly36.67×10-11…

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A: Write the expression for the force on the object exerted by Earth. Fe=GMemRe2

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A: The expression to determine the orbital period of the planet is, T2=4π2MGR3

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Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 1011…

A: Given that, Mass of the milky way galaxy, M=8×1011 Ms (Ms is the mass of Sun) M=8×1011×1.989 ×1030…

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 10…

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Q: For the purposes of this problem, treat the Earth as a solid, uniform sphere with mass 5.97x1024 kg…

A: It is given that, M=5.97×1024 kgRe=6.37×106 mRo=1.5×1011 m

Q: A planet has a mass of 1.5 times the mass of the Earth and a radius that is 2 times the radius of…

A: (a) According to Kepler’s Third law, T2=4π2GMr3   Use the given values,…

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8 ✕ 1011…

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Q: When a falling meteoroid is at a distance above the Earth's surface of 3.10 times the Earth's…

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Q: object is released from rest at a distance h above the surface of a planet (mass = M, radius = R<…

A: According to conservation of energy  Total energy of an isolated system remains constant.

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A: mass = M Radius= R Where in part b as you have solved  v2=GM/4R

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A: Mass of planet (M) = 1.38×1025 kg Mass of moon (m) = 2.48×1018 kg distance between planet and moon…

Q: What is the average gravitational force between the moon (MM=7.38 x 1022 kg) and the earth (ME=5.98…

A: Given : mass of moon (MM) = 7.38×1022 kg mass of earth (ME) = 5.98×1024 kg distance between moon and…

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Q: The mass of the Earth is 5.98 x 1024 kg, and the mass of the Moon is 7.36 x 1022 kg. The distance…

A: Given data: The mass of the Earth is ME=5.98×1024 kg. The mass of the Moon is MM=7.36×1022 kg. The…

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Q: he figure, a square of edge length 19.0 cm is formed by four spheres of masses m1 = 5.20 g, m2 =…

A: GivenEdge length of square, a=19 cm=19×10-2 mm1=5.20 g=5.2×10-3 kgm2=2.9 g=2.9×10-3 kgm3=1.5…

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8 ✕ 1011…

A:

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 • 1011…

A:

Q: Two identical uniform spheres A and B, with mass M = 1.00 [kg], are placed 0.500 [m] away from…

A:

Q: An object of mass is released from rest a distance 3.2R above the surface of a planet, which has no…

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Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8 ✕ 1011…

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Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.