Physics

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Unlike Mercury, Saturn: A) is a low-density planet. B) formed along with the Sun. C) formed ... Started by BRWH	1 Replies 81 Views	Jul 27, 2018 by scottmt
_____ are massive objects destined to become planets. A) Planetesimals B) Protoplanets C) ... Started by tiffannnnyyyyyy	3 Replies 92 Views	Jul 27, 2018 by bdobbins
Which of the following metals is a constituent of iron meteorites? A) Nickel B) Potassium C) ... Started by urbanoutfitters	1 Replies 59 Views	Jul 27, 2018 by cegalasso
The creation of a planetary atmosphere from a planet's interior is called _____. A) ... Started by Tazate	1 Replies 144 Views	Jul 27, 2018 by kingfahad97
The half-life of a radioactive element is the time it takes for: A) half of the radioactive atoms ... Started by natalie2426	1 Replies 130 Views	Jul 27, 2018 by TINA
The Perseid meteor shower is named after a(n) _____. A) comet B) asteroid C) constellation ... Started by karateprodigy	3 Replies 76 Views	Jul 27, 2018 by rnehls
The Oort cloud extends to _____ from the Sun. A) 100 AU B) 1000 AU C) 10,000 AU D) 100,000 ... Started by chads108	1 Replies 37 Views	Jul 27, 2018 by aprice35067
Briefly explain extrasolar planets. What will be an ideal ... Started by piesebel	1 Replies 78 Views	Jul 27, 2018 by joanwhite
Briefly explain the possible threat of near Earth objects. What will be an ideal ... Started by mynx	1 Replies 69 Views	Jul 27, 2018 by bob
Spectroscopic parallax denotes the apparent shift in the position of a star when observed form ... Started by rachel9	3 Replies 78 Views	Jul 27, 2018 by kiamars2010
The centers of stars are many millions of degrees cooler than their surfaces. Indicate whether ... Started by crazycityslicker	1 Replies 47 Views	Jul 27, 2018 by mochi09
The true masses of a spectroscopic binary cannot be found by astronomers. Indicate whether the ... Started by Caiter2013	1 Replies 90 Views	Jul 27, 2018 by Heffejeff
An intrinsically very bright star might appear faint if it is far away. Indicate whether the ... Started by xroflmao	1 Replies 63 Views	Jul 27, 2018 by Edwyer
The luminosity of the Sun is about 4 x 1015watts (joules per second). Indicate whether the ... Started by renzo156	3 Replies 40 Views	Jul 27, 2018 by ebonylittles
In the context of light curves, observations of an eclipsing binary system can directly tell ... Started by fahad	1 Replies 62 Views	Jul 27, 2018 by miss.ashley
Two surveyors measure the distance across a river that they cannot cross. They drive two stakes into ... Started by mydiamond	1 Replies 74 Views	Jul 27, 2018 by succesfull
If one of the intrinsically brightest stars in our sky were 10pc away from Earth, it would appear: ... Started by jeatrice	1 Replies 43 Views	Jul 27, 2018 by cupcake16
Absolute visual magnitude is the: A) apparent magnitude of a star observed from Earth. B) ... Started by washai	3 Replies 245 Views	Jul 27, 2018 by nathang24
In the context of the Hertzsprung-Russell (H-R) diagram, which of the following statements is true ... Started by haleyc112	1 Replies 74 Views	Jul 27, 2018 by marict
Which of the following statements is true of L dwarfs? A) They are cooler than M stars. B) They ... Started by lbcchick	1 Replies 49 Views	Jul 27, 2018 by mmj22343
Suppose you are observing a light bulb. In this context, which of the following is a difference ... Started by CharlieWard	1 Replies 39 Views	Jul 27, 2018 by cdmart10
Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are: A) in the giant ... Started by go.lag	3 Replies 207 Views	Jul 27, 2018 by xoxo123
A measure of the amount of light a star produces is referred to as__________. A) inherited glare ... Started by nummyann	1 Replies 76 Views	Jul 27, 2018 by aadams68
In absolute visual magnitude, Mv, the subscript V refers to the: A) apparent magnitude of a star ... Started by CBme	1 Replies 71 Views	Jul 27, 2018 by cat123
In a binary system, the most massive star: A) shows a large Doppler shift. B) is farthest from ... Started by Mimi	1 Replies 89 Views	Jul 27, 2018 by pratush dev