We can measure the mass of the black hole at the center of the Milky Way galaxy by:?
a. seeing the number of stars disappearrng into the center of the galaxy
b. measuring the amount of gas being ejected from the center of the galaxy
c. watching the orbits of stars in the center and using Kepler's Third Law
d. measuring the size of the region where light from background stars is blocked
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answers:
engineer01 say: C.
If you don't do your own homework, you'll never really learn anything.
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poldi2 say: c.
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quantumclaustrophobe say: It's c.
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Acetek say: see with all the questions you are bound and determined to cheat your way through life

We are not here to do your homework for you. What do you think you will learn by getting others to do your work. Do you realize that if and I mean if you make it to the real world of a career there will be no one to do your work for you. And if you expect others to do your work you will not if at all be employed and just a burden on society and your parents
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CarolOklaNola say: c), AND Newtons law of Universal gravitation. There is NO TERM FOR MASS in Kepler's third law.
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rick29148 say: 'BLACK HOLES' are theory only, no proof they actually exist ..................
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mac say: milky is greek for galaxy
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