Physics

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__________is an isotope of hydrogen in which the nucleus contains a proton and a neutron. A) ... Started by iveyjurea	1 Replies 217 Views	Jul 27, 2018 by kmb352
Which of the following conditions makes stars appear dim? A) The scattering of light by the dust ... Started by Alainaaa8	1 Replies 98 Views	Jul 27, 2018 by enass
Nuclear power plants on Earth generate energy through _____. A) nuclear fission reactions B) ... Started by cnetterville	1 Replies 203 Views	Jul 27, 2018 by yahahah24021
Which of the following reactions is the second reaction in the proton-proton chain? A) 1H + 1H ... Started by laurencescou	3 Replies 115 Views	Jul 27, 2018 by CAPTAINAMERICA
Which of the following statements is true of a bipolar flow? A) It represents jets flowing in ... Started by Lisaclaire	1 Replies 35 Views	Jul 27, 2018 by fromAlphatoOmega22
A star on the upper edge of the main sequence denotes that: A) it has exhausted nearly all ... Started by torybrooks	1 Replies 89 Views	Jul 27, 2018 by pallen55
_____ says that energy must flow from hot regions to cooler regions either by conduction, ... Started by rl	1 Replies 109 Views	Jul 27, 2018 by fatboyy09
The opacity of a gas depends strongly on its _____. A) mass B) density C) volume D) ... Started by maychende	3 Replies 41 Views	Jul 27, 2018 by chevyboi1976
Which of the following statements is true of a carbon nucleus? A) It has six times more positive ... Started by armygirl	1 Replies 74 Views	Jul 27, 2018 by AaaA
The time a protostar takes to contract from a cool interstellar gas cloud to a main-sequence star ... Started by james0929	1 Replies 73 Views	Jul 27, 2018 by lolol
_____ is the location in the H-R diagram where stars first reach stability as hydrogen-burning ... Started by j.rubin	1 Replies 77 Views	Jul 27, 2018 by britb2u
A__________is a stellar object with such low mass that it cannot raise its central temperature high ... Started by cartlidgeashley	3 Replies 80 Views	Jul 27, 2018 by wuly
Among the modes of energy transfer in stars, _____ is the least efficient of all. A) conduction ... Started by asd123	1 Replies 37 Views	Jul 27, 2018 by Missbam101
Identify a true statement about main-sequence stars. A) They balance their gravity by fusing ... Started by tiara099	1 Replies 72 Views	Jul 27, 2018 by otokexnaru
Which of the following statements is true regarding the stars in a stellar association? A) They ... Started by savannahhooper	1 Replies 48 Views	Jul 27, 2018 by Pariscourtney
_____ is the resistance of matter to the passage of radiation. A) Opacity B) Convection C) ... Started by rachel9	3 Replies 69 Views	Jul 27, 2018 by mjbamaung
The flow of energy through each shell determines: A) the mass of each shell. B) the diameter of ... Started by jon_i	1 Replies 131 Views	Jul 27, 2018 by scikid
Which of the following statements is true of T Tauri stars? A) They are often surrounded by thick ... Started by eruditmonkey@yahoo.com	1 Replies 58 Views	Jul 27, 2018 by kilada
When the nuclear reactions begin making too little energy in a star, by virtue of the natural ... Started by LaDunn	1 Replies 87 Views	Jul 27, 2018 by morganmarie791
_____ are reactions that join the nuclei of atoms to form more massive nuclei. A) Endothermic ... Started by elizabeth18	3 Replies 125 Views	Jul 27, 2018 by ktidd
Which of the following statements is true of reflection nebulae? A) They have a distinctive blue ... Started by debasdf	1 Replies 120 Views	Jul 27, 2018 by ebonylittles
Which of the following statements is true of fusion reactions in stars? A) They only occur ... Started by FButt	1 Replies 176 Views	Jul 27, 2018 by ms_sulzle
How do shock waves aid in the formation of stars? What will be an ideal ... Started by Charlie	1 Replies 81 Views	Jul 27, 2018 by fauacakatahaias
Describe interstellar reddening. What will be an ideal ... Started by ashley	3 Replies 148 Views	Jul 27, 2018 by aruss1303
Explain the difference between a star cluster and a stellar association. What will be an ideal ... Started by imowrer	1 Replies 61 Views	Jul 27, 2018 by DHRUVSHAH