Physics

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The bright photosphere is much hotter than the faint corona. Indicate whether the statement is ... Started by magmichele12	1 Replies 78 Views	Jul 27, 2018 by kxciann
Suppose you read somewhere that 10 percent of the matter in the Milky Way is in the form of dust ... Started by Engineer	1 Replies 61 Views	Jul 27, 2018 by lcapri7
Explain how the telescopic discoveries of Galileo could be used in support of Copernicus. What ... Started by krzymel	3 Replies 63 Views	Jul 27, 2018 by IRincones
Briefly summarize current knowledge about the term NHP in the equation Number of Civilizations = ... Started by beccaep	1 Replies 84 Views	Jul 27, 2018 by smrerig
A star with an apparent magnitude of 10 appears fainter than a star with an apparent magnitude of 9. ... Started by Engineer	1 Replies 83 Views	Jul 27, 2018 by thall411
The faintest visible stars to the naked eye have an apparent magnitude of about 6 Indicate ... Started by ericka1	1 Replies 79 Views	Jul 27, 2018 by katheyjon
What is the most abundant molecule in interstellar clouds besides molecular hydrogen? A) ammonia ... Started by corkyiscool3328	3 Replies 124 Views	Jul 27, 2018 by asdfasdf
Globular cluster stars are ________ in heavy elements than those in open clusters. Fill in the ... Started by littleanan	1 Replies 109 Views	Jul 27, 2018 by whitcassie
Briefly summarize current knowledge about the term flife in the equation Number of Civilizations = ... Started by xclash	1 Replies 115 Views	Jul 27, 2018 by samiel-sayed
Radio waves, visible light, and X-rays are all types of electromagnetic radiation. Indicate ... Started by crobinson2013	1 Replies 187 Views	Jul 27, 2018 by kswal303
The frequency of a water wave gives us its height. Indicate whether the statement is true or ... Started by Melani1276	3 Replies 45 Views	Jul 27, 2018 by onowka
Why do we need new forms of technology to make it possible to journey to the nearest stars within a ... Started by naturalchemist	1 Replies 69 Views	Jul 27, 2018 by lkoler
The vast majority of galaxies in the universe are ________ and ________. Fill in the blank(s) ... Started by craiczarry	1 Replies 83 Views	Jul 27, 2018 by bblaney
Why aren't small asteroids spherical in shape? A) Small asteroids have odd shapes because they ... Started by mikaylakyoung	1 Replies 84 Views	Jul 27, 2018 by Bsand8
Over time, what is the net effect of the star-gas-star cycle in the Milky Way? A) The gas of the ... Started by tth	3 Replies 94 Views	Jul 27, 2018 by tennis14576
The solar corona is much cooler than the Sun's surface; hence, we must wait for a total solar ... Started by bobbie	1 Replies 55 Views	Jul 27, 2018 by eliasc0401
If a new wave arrives on shore every two seconds, then its frequency is 2 Hz. Indicate whether ... Started by Redwolflake15	1 Replies 73 Views	Jul 27, 2018 by batool
What is a meteorite? A) a streak of light caused by a star moving across the sky B) a comet that ... Started by futuristic	1 Replies 179 Views	Jul 27, 2018 by joewallace
We can measure the radii of stars in eclipsing binary systems. Indicate whether the statement is ... Started by Destiiny22	3 Replies 103 Views	Jul 27, 2018 by Chelseyj.hasty
According to fossil evidence, how far back in time did life on Earth exist? A) about 545 million ... Started by Alygatorr01285	1 Replies 74 Views	Jul 27, 2018 by laurnthompson
Columbus was the first person to discover that Earth is round. Indicate whether the statement is ... Started by jazziefee	1 Replies 112 Views	Jul 27, 2018 by kalskdjl1212
The solar wind is constantly removing mass from the Sun. Indicate whether the statement is true ... Started by V@ndy87	1 Replies 35 Views	Jul 27, 2018 by dawsa925
Two stars have the same spectral type. Star X is in luminosity class III, while Star Y is in ... Started by 09madisonrousseau09	3 Replies 377 Views	Jul 27, 2018 by hramirez205
Why do scientists say that evolution is a theory? A) because it explains a great deal about life ... Started by naturalchemist	1 Replies 106 Views	Jul 27, 2018 by LVPMS
The Van Allen belts are cloud layers in the jet streams of the stratosphere, similar to the belts ... Started by khang	1 Replies 86 Views	Jul 27, 2018 by Animal_Goddess