Physics

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According to the photoelectric effect in order to release electrons from a solid Started by plus1	1 Replies 1,551 Views	Aug 28, 2013 by notis
In space, positive ions are the result of: A) protons escaping from the nuclei o Started by plus1	1 Replies 1,023 Views	Aug 28, 2013 by notis
In Bohr's model of the atom, electrons A) only make transitions between orbitals Started by plus1	1 Replies 999 Views	Aug 28, 2013 by notis
Which of the following type of electromagnetic radiation has the lowest energy? Started by plus1	1 Replies 783 Views	Aug 28, 2013 by notis
Which of the following type of electromagnetic radiation has the highest energy? Started by plus1	1 Replies 1,016 Views	Aug 28, 2013 by notis
The classical model of the hydrogen atom that explains its spectral line structu Started by plus1	1 Replies 748 Views	Aug 28, 2013 by notis
An emission spectrum can be used to identify a(n) A) proton B) electron. C) ne Started by plus1	1 Replies 814 Views	Aug 28, 2013 by notis
The particle which adds mass but no charge to the atomic nucleus is the: A) posi Started by plus1	1 Replies 965 Views	Aug 28, 2013 by notis
A hydrogen atom consists of an electron and a(n) A) proton. B) ion. C) neutrino. Started by plus1	1 Replies 999 Views	Aug 28, 2013 by notis
The particles which enter into chemical reactions are the atom's: A) protons. B) Started by plus1	1 Replies 673 Views	Aug 28, 2013 by notis
In the atom, which particles gives the element its identify (atomic number)? A) Started by plus1	1 Replies 865 Views	Aug 28, 2013 by notis
A neon light (thin hot neon gas in a sealed tube) gives us: A) a continuous spec Started by plus1	1 Replies 1,447 Views	Aug 28, 2013 by notis
An incandescent light (glowing tungsten filament) produces: A) a continuous spec Started by plus1	1 Replies 950 Views	Aug 28, 2013 by notis
The element first found in the Sun's spectrum, then on Earth 30 years later, is Started by plus1	1 Replies 691 Views	Aug 28, 2013 by notis
The Fraunhofer lines in the solar spectrum are actually: A) emission lines from Started by plus1	1 Replies 527 Views	Aug 28, 2013 by notis
The three laws dealing with the creation of various spectra are due to: A) Newto Started by plus1	1 Replies 707 Views	Aug 28, 2013 by notis
The Orion Nebula, M-42, is a hot, thin cloud of glowing gas, so its spectrum is: Started by plus1	1 Replies 1,115 Views	Aug 28, 2013 by notis
Which of these is the classic continuous spectrum? A) sunlight B) a rainbow C) a Started by plus1	1 Replies 886 Views	Aug 28, 2013 by notis
Typical stellar spectra appear as: A) a series of bright, colored lines. B) an u Started by plus1	1 Replies 1,282 Views	Aug 28, 2013 by notis
What is spectroscopy? A) an analysis of the way in which atoms absorb and emit l Started by plus1	1 Replies 684 Views	Aug 28, 2013 by notis
What is the range of values for Right Ascension? A) 90 degrees to 0 degrees B) Started by Melanie	1 Replies 669 Views	Aug 28, 2013 by penza
Where would you be if the Sun sets for six continuous months, beginning on Septe Started by Melanie	1 Replies 1,002 Views	Aug 28, 2013 by penza
The Earth's circumference was first determined by: A) Aristotle using lunar ecli Started by Melanie	2 Replies 1,093 Views	Aug 28, 2013 by penza
Which of the following describes parallax? A) It is best measured over exactly o Started by Melanie	2 Replies 1,005 Views	Aug 28, 2013 by penza
A star with a large parallax A) is at a great distance from Earth. B) is moving Started by Melanie	2 Replies 899 Views	Aug 28, 2013 by penza

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