Physics

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A scientific theory can be proven true if the correct experiments are performed. a. True b. ... Started by WWatsford	1 Replies 73 Views	Jul 27, 2018 by momolu
When a star of mass comparable to the Sun dies it become a black hole. a. True b. False ... Started by rlane42	3 Replies 87 Views	Jul 27, 2018 by lorealeza
Why do we not expect to find a 5-solar-mass neutron star? What will be an ideal ... Started by Medesa	1 Replies 75 Views	Jul 27, 2018 by coreycathey
If neutron stars contain no nuclear fuel, why are they hot? What will be an ideal ... Started by 123654777	1 Replies 74 Views	Jul 27, 2018 by Pswine
Why does our theory predict that neutron stars will spin rapidly? What will be an ideal ... Started by Zoey63294	1 Replies 81 Views	Jul 27, 2018 by micaelaswann
Why does our theory predict that neutron stars will have strong magnetic fields? What will be an ... Started by newbem	3 Replies 136 Views	Jul 27, 2018 by cupcake16
What evidence do we have that pulsars are neutron stars? What will be an ideal ... Started by robinn137	1 Replies 98 Views	Jul 27, 2018 by juiceman1987
What observational evidence do we have that black holes exist? What will be an ideal ... Started by nevelica	1 Replies 101 Views	Jul 27, 2018 by jointhecircus
Why might we suspect that a black hole in a binary system could emit X-rays? What will be an ... Started by FButt	1 Replies 83 Views	Jul 27, 2018 by micaelaswann
How can an old pulsar have a very short pulsar period, say less than 0.03 seconds? What will be ... Started by mpobi80	3 Replies 90 Views	Jul 27, 2018 by cegalasso
How are neutron stars and white dwarfs similar? What will be an ideal ... Started by Ebrown	1 Replies 114 Views	Jul 27, 2018 by diesoon
Who first determined that the energy/s emitted by (luminosity of) Cepheid variable stars is larger ... Started by roselinechinyere27m	1 Replies 64 Views	Jul 27, 2018 by joanwhite
Who first used RR Lyrae variable stars to determine distances in our Milky Way galaxy? a. ... Started by awywial	1 Replies 97 Views	Jul 27, 2018 by xthemafja
Our galaxy is suspected to be surrounded by a galactic halo or corona because the disk of the galaxy ... Started by mckennatimberlake	3 Replies 209 Views	Jul 27, 2018 by diana chang
Younger stars have more heavy elements because a. old stars destroy heavy elements as they age. ... Started by maychende	1 Replies 71 Views	Jul 27, 2018 by mcarey591
The first stars to form in our galaxy a. had circular orbits. b. had highly elongated elliptical ... Started by K@	1 Replies 67 Views	Jul 27, 2018 by mcinincha279
Good tracers of the spiral arms of our galaxy are all I. very old. II. very young. III. very ... Started by JMatthes	1 Replies 54 Views	Jul 27, 2018 by reversalruiz
If the spiral density wave were the only thing producing spiral arms, it would be expected that ... Started by Zoey63294	3 Replies 207 Views	Jul 27, 2018 by FergA
___________ of the Milky Way contains mostly old (population II) stars and globular clusters. a. ... Started by tiara099	1 Replies 82 Views	Jul 27, 2018 by hugthug12
___________ in other galaxies should contain luminous O and B stars if they are like the Milky Way. ... Started by tth	1 Replies 97 Views	Jul 27, 2018 by honnalora
Pulsating variable stars are useful in determining a. the mass of a star for which the distance ... Started by codyclark	1 Replies 88 Views	Jul 27, 2018 by sultana.d
The galactic halo or corona is believed to contain mostly a. O and B stars. b. G, K, and M ... Started by cartlidgeashley	3 Replies 368 Views	Jul 27, 2018 by Chocorrol77
The energy source at the center of our galaxy a. is not visible at optical wavelengths. b. ... Started by newbem	1 Replies 76 Views	Jul 27, 2018 by coreycathey
Population II stars I. are primarily found in the disk of the galaxy. II. contain more heavy metals ... Started by misspop	1 Replies 59 Views	Jul 27, 2018 by nixon_s
The age of the Milky Way galaxy has been estimated to be at least 13 billion years based on a. ... Started by roselinechinyere27m	1 Replies 82 Views	Jul 27, 2018 by SeanoH09