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Sergeeva-Olga [200]
4 years ago
9

If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same, then

Geography
1 answer:
Sati [7]4 years ago
6 0

Answer:

(b) the night would be half as long

Explanation:

  • As the earth, if rotated twice as fast than it does now and the sun stayed the same then the night would be as half as long as the rotation of the planet on its axis would be double to that of its and 12 hours of night would be as long as the speed of the axial rotation.
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Which represents the Copernican model that is most similar to that of Aristarchus? The solar system shows the planets in their o
AURORKA [14]

Answer:

The solar system shows the planets in their orbits around the sun in this order: Mercury, Venus, Earth with Moon, Mars, Jupiter, Saturn. Fixed stars are around the outside of the orbit of Saturn.

Explanation:

Aristarchus of Samos was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center. So I had to choose the choice that was most similar to that.

6 0
3 years ago
What is the Wt% of SiO2 in augite?<br><br> (Ca, Fe, Mg, Na)(Mg,Fe,Al) (Si,Al)2 O6
vaieri [72.5K]

Answer:

The weight% of SiO_2 in augite is 13.16 %.

Explanation:

Atomic mass of calcium = 40 g/mol

Atomic mass of iron = 56 g/mol

Atomic mass of magnesium = 24 g/mol

Atomic mass of sodium = 23 g/mol

Atomic mass of aluminum = 27 g/mol

Atomic mass of silicon = 28 g/mol

Atomic mass of oxygen = 16 g/mol

Mass of SiO_2=28 g/mol+ 2\time 16 g/mol=60 g/mol

Molar mass of the augite (Ca, Fe, Mg, Na)(Mg,Fe,Al)(Si,Al)_2 O_6 = M

M=40 g/mol+2\times 56 g/mol+2\times 24 g/mol+23 g/mol+3\times 27 g/mol+2\times 28 g/mol+6\times 16 g/mol=456 g/mol

Weight% of SiO_2 in augite:

w\%=\frac{60 g/mol}{456 g/mol}\times 100=13.16\%

3 0
4 years ago
Critical Thinking Questions
satela [25.4K]

Answer:

Answer are written below:

Explanation:

1) It is very important to have a universal method established to guide archaeological excavations because you have to planned out everything in order to find a method or a way to work through the study.

2)  Understanding our past is important to our future because studying history enables us to understand the world better and the past gives us courage and protects us from harm.

3) It would be more challenging to be a prehistoric archaeologist as compared to historical archaeologist because historic archaeology is easier to study due to the presence in written form whereas  Prehistoric archaeology is very difficult to study due to no written records are present.

4) I will work as an academic archaeologist as compared to cultural resource management (CRM) archaeologist because academic archaeologists are active researchers in their field which also published their work in the books, journals, and popular publications.

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3 years ago
Mount Elbrus is one of the seven highest mountain peaks--
Likurg_2 [28]
<span>A) in the Russian landscape book</span>
8 0
3 years ago
A LOT OF POINTS AND BRAINLIEST
lawyer [7]

your answer is

A) the sunlight from the sun is concentrated in the smallest area of earth

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