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Zepler [3.9K]
3 years ago
6

Please helppp

Geography
1 answer:
a_sh-v [17]3 years ago
3 0
A hopes this helps good luck
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What is the impact of river rejuvenation on social and environment activities?
JulijaS [17]

Answer:River restoration immediately benefits the quality of the ecosystem through re-engineering channels that improve the ecology and reduce floods. It also enhances biodiversity in the area by restoring natural functions. Rivers are important natural habitats for different plants and animals

Explanation:

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Using Wien’s Law, estimate the wavelength at which these common materials radiate their peak brightness (show your work):
SSSSS [86.1K]

Explanation:

Wien’s Law:

\lambda _{max}\propto \frac{1}{temperature}

The law states that the wavelength at which black body emits maximum heat  is inversely proportional to the temperature of the body in Kelvins.

\lambda _{max}=\frac{2.9\times 10^{-3}}{T}

1) Walls at 300 K

\lambda _{max}=\frac{2.9\times 10^{-3} mK}{300 K}

\lambda _{max}=9.666\times 10^{-6} m

2) Ice water at 273 K :

\lambda _{max}=\frac{2.9\times 10^{-3} mK}{273 K}

\lambda _{max}=1.062\times 10^{-5} m

3) Hot water at 373 K :

\lambda _{max}=\frac{2.9\times 10^{-3} mK}{373 K}

\lambda _{max}=7.775\times 10^{-6} m

4)Skin at 310 K:

\lambda _{max}=\frac{2.9\times 10^{-3} mK}{310 K}

\lambda _{max}=9.355\times 10^{-6} m

5)An incandescent light bulb at 3000 K

\lambda _{max}=\frac{2.9\times 10^{-3} mK}{3000 K}

\lambda _{max}=9.666\times 10^{-7} m

3 0
3 years ago
Ninety-five percent of the world's opal supply is mined in the nation of _____.
Sphinxa [80]
The correct answer is Australia;
Australia is somewhat famous for thriving in opal mining.

Hope I could help, and good luck!

~Vinny:)
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3 years ago
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Answer: 10 feet long

Explanation:

The white dashed lines that divide lanes on U.S roads is 10 feet. That happens to be the Federal guideline for every street, highway, and rural roads in the United States, on roads where dashed lines separate traffic lanes or indicate (zebra crossing)—where passing is allowed.

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Which regions make up the United Kingdom? A. Northern Ireland, Ireland, Scotland, and England B. England, Scotland, Wales, and N
zhenek [66]

The answer is B, England, Scotland, Wales, and Northern Ireland
8 0
4 years ago
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