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alexwee123
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hint* there are 1000 meters in a kilometer

RyanL.
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1.5*10^8 km
150,000,000

tryder
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@ryanL. how did you got 1.5*10^8 km. can you show how please.

RyanL.
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\[m*10^3 =km\]
so we use this conversion
\[ \frac{km}{m*10^3}\]
\[1.5*10^{11}m * \frac{km}{m*10^3}= \frac{1.5*10^{11} km}{10^3}= 1.5*10^8km\]

tryder
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@RyanL. can you help me on this problem to check if I got it right. 6.23*10^7m= nm

tryder
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I got 6.24*10^4nm and it seems wrong.

RyanL.
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6.23*10^2 nm
look at the conversion

tryder
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@RyanL. can you show me

RyanL.
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1m= 1*10^9 nm

RyanL.
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you will need to multiply what you have by
10^9 in order to convert it to nano meters.

RyanL.
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That's why the 7 turns into 2
because 7 + 9 = 2

tryder
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thanks

tryder
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for everything