Why does a star that has 8 times the mass of the Sun have a shorter...

Why does a star that has 8 times the mass of the Sun have a shorter lifetime on the Main Sequence than a star that has a mass of 2 times the mass of the Sun?

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genius_generous answered 2 years ago

Suppose a star the size of our Sun, but with mass 5.0 times as great, were...

Suppose a star the size of our Sun, but with mass 5.0 times as great, were rotating at a speed of 1.0 revolution every 18 days. If it were to undergo gravitational collapse to a neutron star of radius 14 km , losing three-quarters of its mass in the process, what would its rotation speed be? Assume also that the thrown- off mass carries off either part a. no angular momentum part b. its proportional share three-quarters of the initial...

A certain red giant star has a luminosity of 100,000 times that of the Sun and...

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Suppose we discover a star which has twice the radius of the Sun and 4 times...

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Write an essay about the expected life cycle of a star the mass of our Sun....

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A planet has 8 times the mass of earth but has the same density. what is...

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The sun's mass is about 2.7 x 10^7 times greater than the moon's mass. The sun...

The sun's mass is about 2.7 x 10^7 times greater than the moon's mass. The sun is about 400 times farther from Earth than the moon. How does the gravitational force exerted on Earth by the sun compare with the gravitational force exerted on Earth by the moon? Use complete sentences.

Consider a star has the same central conditions as our Sun: - assuming that the core...

Consider a star has the same central conditions as our Sun: - assuming that the core is comprised of hydrogen, what is the extent of ionisation in the core due to the temperature? - sometimes an approximation is made that the entire core of the star is entirely ionised, comment on the validity of this assumption.?

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A neutron star has a mass of 3.35 × 1030 kg (about the mass of our...

A neutron star has a mass of 3.35 × 1030 kg (about the mass of our sun) and a radius of 6.09 × 103 m. Suppose an object falls from rest near the surface of such a star. How fast would it be moving after it had fallen a distance of 0.013 m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)

Why have recessions become rarer and shorter in length in recent years?

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