Physics

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The F-ring is held in place around Saturn by two shepherd moons. Indicate whether the statement ... Started by lindiwe	1 Replies 60 Views	Jul 27, 2018 by Perkypinki
Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at ... Started by Tirant22	3 Replies 166 Views	Jul 27, 2018 by beccamahon
The more baryons there are in the universe (a higher density of baryonic matter), the lower the ... Started by sam.t96	1 Replies 88 Views	Jul 27, 2018 by milbourne11
The initial rise off the main sequence in stage 8 comes from gravitational energy of the contracting ... Started by tatyanajohnson	1 Replies 65 Views	Jul 27, 2018 by jsm54321
The largest asteroid, and probably the only one to be a spherical world, is A) Ceres. B) Ida. C) ... Started by tatyanajohnson	1 Replies 102 Views	Jul 27, 2018 by kjo;oj
On average, how fast do the plates move on the Earth? A) a few millimeters per century B) about 1 ... Started by abarnes	3 Replies 106 Views	Jul 27, 2018 by firehawk60
The seasons on Earth are caused by its elliptical orbit around the Sun. Indicate whether the ... Started by 809779	1 Replies 60 Views	Jul 27, 2018 by josephsuarez
Why is there an upper limit to the mass of a white dwarf? A) The more massive the white dwarf, ... Started by abern	1 Replies 116 Views	Jul 27, 2018 by Dominic
The star Thuban in Draco A) was an excellent north pole star in 3,000 BC. B) lies halfway ... Started by nelaaney	1 Replies 89 Views	Jul 27, 2018 by ilianabrrr
Sunspots are cooler than the surrounding region of the Sun's surface. Indicate whether the ... Started by Arii_bell	3 Replies 80 Views	Jul 27, 2018 by nanny
At midnight it is sometimes possible to observe the crescent moon on the meridian. Indicate ... Started by tsand2	1 Replies 90 Views	Jul 27, 2018 by k2629
There are more atoms in a glass of water than stars in the observable universe. Indicate whether ... Started by javeds	1 Replies 89 Views	Jul 27, 2018 by Chelseyj.hasty
Saturn's rings are extremely old, possibly older than four billion years. Indicate whether the ... Started by penguins	1 Replies 31 Views	Jul 27, 2018 by mirabriestensky
If Scorpius is now prominent in the summer sky, in 13,000 years it will be best seen A) in the ... Started by deesands	3 Replies 150 Views	Jul 27, 2018 by dmurph1496
The tail of a comet always points A) away from the Sun and becomes longest and brightest at ... Started by torybrooks	1 Replies 73 Views	Jul 27, 2018 by AISCAMPING
Atomic nuclei consist of protons and electrons. Indicate whether the statement is true or ... Started by Yi-Chen	1 Replies 74 Views	Jul 27, 2018 by kbennett34
Consider the data points together with the models in the graph of expansion models. Which model is ... Started by lracut11	1 Replies 163 Views	Jul 27, 2018 by nikmaaacs
Which of the following hypothetical observations would contradict our theories about the formation ... Started by Bernana	3 Replies 97 Views	Jul 27, 2018 by Jsherida
The Oort Cloud is believed to be A) a grouping of asteroids and meteoroids between the orbits of ... Started by clmills979	1 Replies 101 Views	Jul 27, 2018 by tdewitt
The particles in Saturn's E ring probably come from volcanic eruptions on Enceladus. Indicate ... Started by ARLKQ	1 Replies 59 Views	Jul 27, 2018 by Silverbeard98
The sun's X-ray and ultraviolet light output is greater than what we would expect based on the ... Started by schs14	1 Replies 79 Views	Jul 27, 2018 by rachel
The sun rotates more quickly at the equator than at the poles. Indicate whether the statement is ... Started by Mr3Hunna	3 Replies 98 Views	Jul 27, 2018 by jennafosdick
The fact that the Earth has moved along its orbit in the time it took to rotate once is the reason ... Started by saraeharris	1 Replies 197 Views	Jul 27, 2018 by lorealeza77
The atomic nuclei of the same element always have the same number of neutrons. Indicate whether ... Started by 09madisonrousseau09	1 Replies 387 Views	Jul 27, 2018 by Ptupou85
You are in a place that is extremely hot and dense. You can't see far because your surroundings are ... Started by skymedlock	1 Replies 94 Views	Jul 27, 2018 by ky860224