Physics

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A telescope that is 1.0 meter in diameter has a focal length of 10 meters. An eyepiece with a focal ... Started by vicotolentino	3 Replies 172 Views	Jul 27, 2018 by ririgirl15
A G2 I star is ____________________ in diameter and ____________________ luminous than the Sun. ... Started by daltonest1984	1 Replies 75 Views	Jul 27, 2018 by smrtceo
The first pulsar was discovered by _________ in November of 1967. a. Jocelyn Bell b. Isaac ... Started by captainjonesify	1 Replies 86 Views	Jul 27, 2018 by patma1981
Electromagnetic radiation, or light, travels at speed ___________ m/s. Fill in the blank(s) with ... Started by sam.t96	1 Replies 115 Views	Jul 27, 2018 by InfiniteSteez
Luminosity class IV objects are known as ____________________. Fill in the blank(s) with correct ... Started by ghost!	3 Replies 87 Views	Jul 27, 2018 by carojassy25
A pulsar requires that a neutron star I. rotate rapidly. II. have a radius of at least 10 km. III. ... Started by Awilson837	1 Replies 68 Views	Jul 27, 2018 by akemokai
The colors of the rainbow from shortest to longest wavelength are ______________________. Fill in ... Started by captainjonesify	1 Replies 90 Views	Jul 27, 2018 by sarah_brady415
The masses and diameters of each star in a binary can be determined from ____________________ ... Started by craiczarry	1 Replies 60 Views	Jul 27, 2018 by stano32
The Schwarzschild radius of a 1-Mo black hole is approximately a. 3 km. b. 1,500,000 km, the ... Started by mikaylakyoung	3 Replies 73 Views	Jul 27, 2018 by Ksh22
A particle of light is called a ________________. Fill in the blank(s) with correct ... Started by ericka1	1 Replies 93 Views	Jul 27, 2018 by Amiracle
Most stars on the H-R diagram are on the ____________________. Fill in the blank(s) with correct ... Started by penguins	1 Replies 68 Views	Jul 27, 2018 by Jsherida
If the inner accretion disk around a black hole has a temperature of 106 K, at what wavelength will ... Started by olgavictoria	1 Replies 91 Views	Jul 27, 2018 by leahm14
________________ absorbs most of the ultraviolet radiation coming from the Sun. Fill in the ... Started by LaDunn	3 Replies 118 Views	Jul 27, 2018 by Edwyer
The light curve of a/an ___________ binary can reveal both masses and diameters of the stars. ... Started by lracut11	1 Replies 79 Views	Jul 27, 2018 by upturnedfurball
The escape velocity at the event horizon around a black hole is a. smaller than the speed of ... Started by naturalchemist	1 Replies 110 Views	Jul 27, 2018 by tandmlomax84
_________________ refers to the ability of a telescope to produce bright images. Fill in the ... Started by roselinechinyere27m	1 Replies 227 Views	Jul 27, 2018 by BUTTHOL369
The most massive main-sequence stars are the ________ spectral class and the ________ luminosity ... Started by bobthebuilder	3 Replies 110 Views	Jul 27, 2018 by Mochi
The calculated Schwarzschild radius of a 2-Mo black hole is approximately a. 6 km. b. 4 km. c. ... Started by Diane	1 Replies 83 Views	Jul 27, 2018 by Tonyam972
To keep a telescope fixed on a stellar target over time as Earth rotates, the telescope must have ... Started by ereecah	1 Replies 73 Views	Jul 27, 2018 by Beatricemm
In a/an ____________ binary, the orbits of both stars can be mapped. Fill in the blank(s) with ... Started by Redwolflake15	1 Replies 62 Views	Jul 27, 2018 by Anton
A black hole can be thought of as a. a very massive object of finite size. b. a shell of ... Started by APUS57	3 Replies 61 Views	Jul 27, 2018 by lorealeza77
X-rays easily penetrate Earth's atmosphere and reach the ground from space. a. True b. False ... Started by MGLQZ	1 Replies 73 Views	Jul 27, 2018 by akudia
Reorder the spectral sequence to include the L and T dwarfs. What is the new sequence? What will ... Started by theo	1 Replies 61 Views	Jul 27, 2018 by mjenn52
The object left behind after the 1054 AD supernova explosion has been observed at the center of the ... Started by SAVANNAHHOOPER23	1 Replies 56 Views	Jul 27, 2018 by durant1234
The amount of energy a photon carries depends on its wavelength. a. True b. False Indicate ... Started by nummyann	3 Replies 69 Views	Jul 27, 2018 by Chocorrol77