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o-na [289]
3 years ago
15

How have scientists researched Proxima Centauri?

Geography
1 answer:
Ivenika [448]3 years ago
5 0

<u>RESEARCH ON PROXIMA CENTAURI:</u>

  • Robert Innes discovered proxima centauri which is closest to the Sun in 1915 and it is believed to be 4.85 billion years old.
  • Innes used a blink comparator though later he was in competition with another scientist named, Voute who provided theoretical values pertaining to the star more accurately than Innes.
  • The recent findings found a planet which is located close to the Proxima Centauri making it the closest planet to our Solar System.
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zubka84 [21]
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3 years ago
According to Khana, what lines are most important in North America, and what does the continent need most?​
ICE Princess25 [194]

According to Khanna the lines that are important to North America are the ones that are based on connectivity.

<h3>What does Khanna say about continental lines?</h3>

This author referred to this lines as useless lines that divided territories in the world.

According to the author, what the worlds needs are the lines that are able to bring people closer such as technology for better communication and also infrastructure.

Connectivity is said to be the organizing principle of human beings instead of sovereignty.

Read more on continental lines here:  

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6 0
3 years ago
Olivine has what two positive cations in its silicate structure?
Nataliya [291]

Answer:

Ferrous (Fe²⁺) and magnesium cation (Mg²⁺).

Explanation:

The olivine mineral is a type of orthosilicate, which is generally yellow to yellow-green in color. It is the main component of the upper mantle of the Earth, which can be found in igneous and metamorphic rocks.

The olivine mineral exists in the form of Mg₂SiO₄, Fe₂SiO₄, or (Mg,Fe)₂SiO₄.

<u>This silicate consists of two divalent cations, ferrous (Fe²⁺) and magnesium cation (Mg²⁺).</u>

4 0
3 years ago
Except for solar cells and hydrokinetic buoys, which do all power-generation technologies use to generate electricity?
NemiM [27]

Answer:

C. Turbine

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Most power-generation technologies use a form of turbine to create electricity.  The turbine is forced to spin because of an external force applied to its blades, and that movement against a fixed generator created electricity.

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In water-based plants, it's the water pushing the blades (like in a dam).

In a wind turbine, it's the wind pushing the blades.

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3 0
3 years ago
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lorasvet [3.4K]
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6 0
3 years ago
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