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Minchanka [31]
3 years ago
14

Please help!!!! on both of them this is physics not math

Physics
1 answer:
Lera25 [3.4K]3 years ago
3 0
Ok this is probably the easiest part in physics so lol dont panic. now the way you round is by looking at the exponent which in this case for the first one is -9 so 6.8 is gonna be 0000000068. because when you have a negative exponent you move the decimal to the west side. when you have a positive decimal you move to the east side. I will not do the second one because its best if you try to solve it so you can learn it. good luck my friend.
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Answer:

Explanation:

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Percentage difference for the Virgo

\% = \frac{|A-O|}{A}\times 100 = \frac{|17 Mpc-17.143 Mpc|}{17 Mpc}\times 100 = 0.84 \%


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A= d_{Corona Borealis}  = 310 Mpc, v_{Corona Borealis}  = 22000 km/s,


Using Hubble's law

v = H_{0}D For Corona Borealis

v_{Corona Borealis } = H_{0}D_{Corona Borealis }
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Percentage difference for the Virgo

\% = \frac{|A-O|}{A}\times 100 = \frac{|310 Mpc-314.286 Mpc|}{310 Mpc}\times 100 = 1.3825 \%


So clearly  Hubble's law is more accurate for the closer objects

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