Physics, 09.10.2019 05:30 heatherlemaster

Select all that apply.
a spectrograph astronomers to determine:

distance to stars
brightness of stars
composition of stars
surface temperatures
radio signals from space

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Answer from: hdjsjshshsh

I found that it was: Distance to stars, Brightness of stars and Composition of stars. Hope this helps!

Answer from: annyarias5209

composition of stars

surface temperatures

Explanation:

A spectrograph is used by astronomers to find to the composition of stars and surface temperature.

The emission or absorption spectra tells the composition of stars- the elements present in it. Elements absorb/emit particular wavelength.

Using the peak wavelength of from the spectrum obtained, surface temperature can be calculated using Wein's law.

Spectrograph is not used to measure the distance but the motion of the stars. The motion is indicated by red-shift and blue-shift.

Answer from: Quest

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

Answer from: Quest

Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is a colourless liquid organic compound with the chemical formula ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called glacial acetic acid. vinegar is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. it is classified as a weak acid since it only partially dissociates in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7 3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366 chemblchembl539 chemspider171 drugbankdb03166 echa infocard100.000.528ec number200-580-7e numbere260 (preservatives)gmelin reference1380iuphar/bps1058keggd00010 meshacetic+acidpubchem cid176rtecs numberaf1225000uniiq40q9n063p un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4) key: qtbsbxvteameqo-uhfffaoysa-n smilescc(o)=o

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