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3 years ago

Imagine that you are a doctor who is studying the spread of a disease in your country. How could you use new

Geography

1 answer:

andrew-mc [135]3 years ago

7 0

Answer:

well u could use a tool to look at a infect person to analyze the disease or use a tool to bring disease for testing to find a cure

Explanation:

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Name 5 landlocked (completely surrounded by land, Not touching seas/oceans) countries in Africa

alexdok [17]

Answer:

South Sudan, Zambia, Niger, Chad, Mali, Uganda

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3 years ago

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The Paleozoic Era ended with a mass extinction event that was likely caused by Choose one: A. the evolution of land plants. B. t

Zarrin [17]

Answer:

D. intense volcanic activity.

Explanation:

The Paleozoic era an era in the geologic time and started about 541 million years. It originated due to the diversity of life forms on the planet. and ended about 252 mn years ago along with the end of Permian era.

The extinction was related to the changes in climate and exceptionally low sea levels. During which about 95% of the marine species were killed.

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3 years ago

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

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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

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

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

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3 years ago

Which of these pieces of evidence did Alfred Wegener's original theory of continental drift have access to?

otez555 [7]

A. seafloor spreading at mid-ocean ridges

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3 years ago

The Dead Sea is a significant feature of the region surrounding Israel because the Dead Sea is

kompoz [17]

The only sea with nothing living in it

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4 years ago

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