Physics

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Mass added to a pulsar from its companion can speed it up into a(n) ________ pulsar. Fill in the ... Started by LaDunn	3 Replies 144 Views	Jul 27, 2018 by durant1234
Our nearest stellar neighbor is a little less than 1 parsec away. Indicate whether the statement ... Started by nenivikky	1 Replies 72 Views	Jul 27, 2018 by Koolkid240
A telescope with an 8-inch mirror will collect twice as much light as one with a 4-inch mirror. ... Started by fahad	1 Replies 204 Views	Jul 27, 2018 by leahchrapun
Mercury's rotation and revolution are an example of a 3:2 resonance. Indicate whether the ... Started by vinney12	1 Replies 44 Views	Jul 27, 2018 by juliaf
Of all the stars in the sky, Barnard's star, the next closest beyond Alpha Centauri, appears to move ... Started by Brittanyd9008	3 Replies 128 Views	Jul 27, 2018 by Ahernandez18
How do astronomers use the Hubble Constant (H0 ) to estimate the age of the universe? A) The ... Started by jho37	1 Replies 159 Views	Jul 27, 2018 by blfontai
Although it has no liquid water, Mercury has a tidal bulge. Indicate whether the statement is ... Started by vHAUNG6011	1 Replies 117 Views	Jul 27, 2018 by qytan
Dr. X believes that the Hubble constant is H0 = 20 km/s/Mly while Dr. Y believes it is H0 = 24 ... Started by joe	1 Replies 95 Views	Jul 27, 2018 by janeli1
The largest presently known redshifts of quasars are close to A) 0.96. B) 3. C) 7. D) 10. E) ... Started by naturalchemist	3 Replies 105 Views	Jul 27, 2018 by miss_1456@hotmail.com
All modern large optical telescopes are refractors. Indicate whether the statement is true or ... Started by fnuegbu	1 Replies 144 Views	Jul 27, 2018 by Chocorrol77
Recall that Hubble's law is written v = H0d, where v is the recession velocity of a galaxy located a ... Started by sarasara	1 Replies 162 Views	Jul 27, 2018 by mochi09
A(n) ________ is a very energetic collapse forming a black hole and jets of gamma rays. Fill in ... Started by Shelles	1 Replies 94 Views	Jul 27, 2018 by ghepp
A 3rd magnitude star appears 2.5 times brighter than a 4th magnitude star. Indicate whether the ... Started by laurencescou	3 Replies 136 Views	Jul 27, 2018 by krakiolit
A black hole is an object whose escape velocity is equal to ________. Fill in the blank(s) with ... Started by corkyiscool3328	1 Replies 103 Views	Jul 27, 2018 by voltaire123
Some quasars show absorption spectra with a smaller redshift than their emission spectra. This ... Started by lindiwe	1 Replies 133 Views	Jul 27, 2018 by Qarqy
Venus' surface temperature cools off at night, much like Mercury's does. Indicate whether the ... Started by dbose	1 Replies 59 Views	Jul 27, 2018 by jliusyl
At its brightest, Venus, at magnitude -4, is 100 times brighter than a 1st magnitude star. ... Started by newbem	3 Replies 156 Views	Jul 27, 2018 by rekilledagain
How do observations of galaxies at different distances help us learn about galaxy evolution? A) ... Started by c0205847	1 Replies 78 Views	Jul 27, 2018 by phuda
General Relativity is Einstein's theory of ________. Fill in the blank(s) with correct ... Started by Bob-Dole	1 Replies 101 Views	Jul 27, 2018 by jojobee318
Using binary galaxies to find their masses assumes that, like double stars, their orbits obey ... Started by c0205847	1 Replies 71 Views	Jul 27, 2018 by Ksh22
The Earth's atmosphere is the major factor limiting the use of ground-based radio telescopes. ... Started by jjjetplane	3 Replies 103 Views	Jul 27, 2018 by elyse44
I observe a galaxy that is 100 million light years away. Which of the following do I see? A) the ... Started by Capo	1 Replies 100 Views	Jul 27, 2018 by Smiles0805
According to our HST deep surveys, which of the below are NOT less common now than in the early ... Started by karlynnae	1 Replies 41 Views	Jul 27, 2018 by aprice35067
Hydrogen lines are strongest in class A stars. Indicate whether the statement is true or ... Started by V@ndy87	1 Replies 73 Views	Jul 27, 2018 by allisonblackmore
The surface temperature of Venus is 730K, even hotter than Mercury. Indicate whether the ... Started by luvbio	3 Replies 96 Views	Jul 27, 2018 by polinasid