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Physics 21 Online
OpenStudy (anonymous):

which is the best unit of measure to use when describing the distance between the nearest galaxy and our solar system? A.light year B.angstorm C.meter D.centimeter

OpenStudy (anonymous):

The common distance measures we use depend on what we are measuring. 1. For distances within our solar system, or other solar systems, the common unit is the ... 1 pc = 3.26 light years = about the distance to the nearest star ... for distances between galaxies

OpenStudy (anonymous):

I think A. for real

OpenStudy (anonymous):

where did u search that

OpenStudy (jamesj):

Common sense. How big is everything else on your list? Small, very small. Much better to use a much, much, much longer unit of distance.

OpenStudy (anonymous):

yep definitely light year. Even without searching, it is the most logical answer.

OpenStudy (anonymous):

oh ok

OpenStudy (anonymous):

thanks yall

OpenStudy (jamesj):

for the record, how big is an Angstrom?

OpenStudy (anonymous):

i think its one tenth billionth of a meter

OpenStudy (anonymous):

An angstrom is a unit of length which equals to 0.1 nanometer or one ten-millionth of a millimeter.

OpenStudy (jamesj):

yes, it's 10^-10 meters. So tiny.

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