Physics

Replies / Views	Last post
The moon ________ may have erupted to create the E rings around Saturn. Fill in the blank(s) with ... Started by fox	1 Replies 73 Views	Jul 27, 2018 by lkanara2
Based on current understanding, the minimum mass of a black hole that forms during a massive star ... Started by casperchen82	1 Replies 190 Views	Jul 27, 2018 by bigcheese9
Which of the following best describes why we say that light is an electromagnetic wave? A) The ... Started by darbym82	1 Replies 132 Views	Jul 27, 2018 by lin77x
What class of asteroids is a threat to Earth and other terrestrial planets? Why? What will be an ... Started by Melani1276	3 Replies 64 Views	Jul 27, 2018 by ankilker
What do we mean by the event horizon of a black hole? A) It is the very center of the black hole. ... Started by Jramos095	1 Replies 99 Views	Jul 27, 2018 by tjayeee
During the period each year when we see Mars undergoing apparent retrograde motion in our sky, what ... Started by jayhills49	1 Replies 115 Views	Jul 27, 2018 by dawsa925
The Milky Way is considered to be an intermediately wound, barred spiral, which would be type ... Started by tuffie	1 Replies 39 Views	Jul 27, 2018 by tjayeee
In Ptolemy's geocentric model, retrograde motion occurs when the planet is closest to us, on the ... Started by khang	3 Replies 93 Views	Jul 27, 2018 by Heffejeff
All four rings systems lie within their planet's ________. Fill in the blank(s) with correct ... Started by CharlieWard	1 Replies 72 Views	Jul 27, 2018 by Joc
Suppose you see a photo showing Jupiter half in sunlight and half in shadow (that is, a first ... Started by Haya94	1 Replies 65 Views	Jul 27, 2018 by sokh
Imagine that our Sun were magically and suddenly replaced by a black hole of the same mass (1 solar ... Started by RYAN BANYAN	1 Replies 87 Views	Jul 27, 2018 by kardosa007
Suppose the jovian planet atmospheres were composed 100 percent of hydrogen and helium rather than ... Started by Jramos095	3 Replies 152 Views	Jul 27, 2018 by janeli
As a star's evolution approaches the Type II supernova, we find A) photo disintegration of iron ... Started by mp14	1 Replies 82 Views	Jul 27, 2018 by atrochim
In shape and component stars, elliptical galaxies are most like our own A) galactic center. B) ... Started by Melani1276	1 Replies 56 Views	Jul 27, 2018 by blfontai
The most distant stars we can currently measure stellar parallax for are approximately A) in the ... Started by Garrulous	1 Replies 62 Views	Jul 27, 2018 by FergA
As a 6 solar-mass star leaves the main sequence on its way to becoming a red supergiant, its ... Started by mcmcdaniel	3 Replies 134 Views	Jul 27, 2018 by Loise Hard
RXJ1800, a galaxy, lies very near in the sky to the bright star Vega. What is the best explanation ... Started by DelorasTo	1 Replies 71 Views	Jul 27, 2018 by sarah_brady415
The planet with the least obvious ring system is ________. Fill in the blank(s) with correct ... Started by karen	1 Replies 93 Views	Jul 27, 2018 by lorealeza77
What is true of giant and dwarf elliptical galaxies? A) The giants are mostly blue, the dwarfs ... Started by Evvie72	1 Replies 59 Views	Jul 27, 2018 by ms_sulzle
Which of the following statements about apparent and absolute magnitudes is true? A) A star's ... Started by tth	3 Replies 79 Views	Jul 27, 2018 by jesse.fleming
People of central Africa predicted the weather by A) recording the seasonal changes in average ... Started by Charlie	1 Replies 43 Views	Jul 27, 2018 by Li Jun
How do scientists study the history of life on Earth? A) by comparing present-day organisms with ... Started by ishan	1 Replies 88 Views	Jul 27, 2018 by millet
The dusty ring around Jupiter was discovered in 1979 by ________. Fill in the blank(s) with ... Started by Metfan725	1 Replies 65 Views	Jul 27, 2018 by TINA
The faintest star visible to the naked eye has an apparent magnitude of about A) 6. B) -1. C) 1. ... Started by Redwolflake15	3 Replies 60 Views	Jul 27, 2018 by jjorrostieta
How do most of the new solar systems we've discovered compare to our own? What will be an ideal ... Started by tsand2	1 Replies 60 Views	Jul 27, 2018 by sierrahalpin