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Sonbull [250]
3 years ago
14

Which number is the same as 3.11 x 10-4 ?

Physics
2 answers:
andrew-mc [135]3 years ago
7 0

Answer:

number is same as 0.000311

Explanation:

As we know that the number in scientific representation is given as

N = 3.11 \times 10^{-4}

also we know that

now we know that

10^{-4} = \frac{1}{10^4}

10^{-4} = \frac{1}{10000}

now we have

3.11 \times 10^{-4} = \frac{3.11}{10000}

3.11 \times 10^{-4} = 0.000311

Arturiano [62]3 years ago
6 0
10^-4 = 0.0001 * 3.11 = 0.000311
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Answer:

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Explanation:

We have given radius of mars R_{mars}=6.9\times 10^3km=6.9\times 10^6m and radius of earth R_{E}=1.3\times 10^4km=1.3\times 10^7m

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So mass of mars M_m=5.972\times\times 0.11 \times 10^{24}=0.657\times 10^{24}kg

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So density of mars d_{mars}=\frac{mass}{volume}=\frac{0.657\times 10^{24}}{1375.357\times 10^{18}}=477.69kg/m^3

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So density of earth d_{E}=\frac{mass}{volume}=\frac{5.972\times 10^{24}}{9.198\times 10^{21}}=649.271kg/m^3

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v=\sqrt{\frac{2GM}{R}}=\sqrt{\frac{2\times 6.67\times 10^{-11}\times 0.657\times 10^{24}}{6.9\times 10^6}}=3.563\times 10^4m/sec

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Answer:

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