If our Sun contracts from the current size to a size similar to a neutron star(radius~10km),...
If our Sun contracts from the current size to a size similar to a neutron star(radius~10km), Explain why a spinning top cannot stay up if it is not spinning(with physical reason).
Homework Answers
As sun reduces in its size its gravitational force will be very very large. So top part will be attracted towards the center of sun with much larger force . To avoid that collapse from top to centre sun must spin with very large speed so that this gravitational force will behave as centripetal force . But if sun will stop spinning top surface will collapse
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If our Sun contracts from the current size to a size similar to
a neutron star(radius~10km),...
PartA Constants Suppose a star the size of our Sun, but with mass 9.0 times as...
PartA Constants Suppose a star the size of our Sun, but with mass 9.0 times as great, were rotating at a speed of 1.0 revolution every 10 days. If it were to undergo gravitational collapse to a neutron star of radius 12 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 no angular momentum Express your answer using two significant figures. A2c rev/s Part B...
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a) Consider a star with the same ass as our sun but with a different radius....
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choose correct answer. no explanation needed QUESTION 36 What does the apparent magnitude of a star...
choose correct answer. no explanation needed
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choose correct answer. no explanation needed
QUESTION 36 What does the apparent magnitude of a star tell us about that star? its mass how bright it appears from Earth its radius how much energy it is emitting QUESTION 37 What is the reason sunspots appear darker than surrounding regions on the Sun's surface? They actually are fairly bright, but appear dark against the even brighter background of the surrounding photosphere. They are too cold to emit any visible light. They...
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