Physics

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How does counting craters help us estimate the age of a moon's surface? What will be an ideal ... Started by corkyiscool3328	1 Replies 115 Views	Jul 27, 2018 by kiamars2010
Why did the solar nebula flatten into a disk? A) The force of gravity pulled the material ... Started by tsand2	3 Replies 99 Views	Jul 27, 2018 by meganmoser117
The helium flash requires a core temperature of ________ K to create carbon. Fill in the blank(s) ... Started by penguins	1 Replies 149 Views	Jul 27, 2018 by SamMuagrove
Why does the surface of Triton appear so young? What will be an ideal ... Started by plus1	1 Replies 47 Views	Jul 27, 2018 by yasmin
What is the approximate surface temperature of a B star? A) 8,000 K B) 6,000 K C) 20,000 K D) ... Started by jace	1 Replies 65 Views	Jul 27, 2018 by cassie_ragen
According to our theory of solar system formation, why do all the planets orbit the Sun in the same ... Started by jeatrice	3 Replies 84 Views	Jul 27, 2018 by jgranad15
During the red giant phase, a star's mass ________. Fill in the blank(s) with correct ... Started by humphriesbr@me.com	1 Replies 73 Views	Jul 27, 2018 by juiceman1987
In the Ptolemaic model of the solar system, Venus should exhibit which of the following phases? ... Started by penguins	1 Replies 90 Views	Jul 27, 2018 by ebe
Nearly all of the oxygen in the Earth's atmosphere was originally produced by photosynthesis in the ... Started by bobthebuilder	1 Replies 73 Views	Jul 27, 2018 by rachel
Which of the following lists the ingredients of the solar nebula from highest to lowest percentage ... Started by berenicecastro	3 Replies 172 Views	Jul 27, 2018 by yotaSR5
How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be ... Started by Medesa	1 Replies 70 Views	Jul 27, 2018 by CourtneyCNorton
Galileo observed which of the following phases of Venus? A) full B) new C) crescent D) gibbous ... Started by bucstennis@aim.com	1 Replies 75 Views	Jul 27, 2018 by amandanbreshears
Our Sun will eventually become a red giant, then expel a(n) ________ and collapse into a white ... Started by james9437	1 Replies 49 Views	Jul 27, 2018 by cpetit11
The mechanism by which planetary nebulae shine is very similar to that powering ________. Fill in ... Started by javeds	3 Replies 77 Views	Jul 27, 2018 by paavo
Which of the following statements about Kepler's laws is false? A) Kepler's laws provide ... Started by 809779	1 Replies 94 Views	Jul 27, 2018 by matt
What did Galileo discover through his telescope when he looked at Jupiter, and how did it refute the ... Started by cartlidgeashley	1 Replies 86 Views	Jul 27, 2018 by stallen
What percentage of the mass of the solar nebula consisted of elements other than hydrogen and ... Started by Coya19@aol.com	1 Replies 98 Views	Jul 27, 2018 by sultansheikh
When a shell of hydrogen accretes onto a white dwarf from a close companion, a(n) ________ explosion ... Started by tnt_battle	3 Replies 107 Views	Jul 27, 2018 by lin77x
Using Jupiter's axial tilt, explain why its rings are harder to observe from Earth than even the ... Started by stock	1 Replies 82 Views	Jul 27, 2018 by Qarqy
The habitable zone around a star refers to the places where living organisms are found. Indicate ... Started by captainjonesify	1 Replies 68 Views	Jul 27, 2018 by enass
Why do we believe that most of the mass of the Milky Way is in the form of dark matter? A) The ... Started by formula1	1 Replies 50 Views	Jul 27, 2018 by leannegxo
Why do astronomers believe that Triton is a captured moon? A) Triton is very small and ... Started by vicky	3 Replies 113 Views	Jul 27, 2018 by poopface
The ozone layer lies above the troposphere and below the mesosphere. Indicate whether the ... Started by RODY.ELKHALIL	1 Replies 126 Views	Jul 27, 2018 by jgranad15
In the light curve of a nova, the rise to maximum luminosity takes only a few ________. Fill in ... Started by biggirl4568	1 Replies 62 Views	Jul 27, 2018 by emilymalinowski12
Approximately how long does it take the sun to go through a full cycle of passing above and below ... Started by bucstennis@aim.com	1 Replies 52 Views	Jul 27, 2018 by Dnite