Answer:
The weight% of 
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 
Molar mass of the augite 
= M
Weight% of in augite:
Answer:
<u>Geocentric Model</u>: - this model is Earth Centered
-Retrograde motion is explained by epicycles
<u>Heliocentric Model</u>: - This model is Sun Centered
-Retrograde motion is explained by the orbital speeds of planets
<u>Both models</u>:- Epicycles and deferents help explain planetary motion
-Planets move in circular orbits and with uniform motion
-The brightness of a planet increases when the planet is closest to Earth
Explanation:
Retrograde motion is an apparent change in the movement of the planet through the sky. Ptolemy's model of the solar systems was geocentric, where the Sun, Moon, planets and start all orbit the Earth in perfectly circular orbits. However this perfectly circular orbits around the Earth did not explain the occasional retrograde motion of the planets. In the Copernicus' heliocentric model, retrograde motion of planets is naturally explained. The explanation for retrograde motion in a heliocentric model is that retrograde occurs roughly when a faster moving planet catches up to and passes a slower moving planet.
Why is Quechua still present in modern-day South America?
A) It is a required subject in every school.
B) It was brought by European invaders and perpetuated throughout the continent.
C) It is an indication of wealth and achievement.
D) It was imposed on every tribe conquered by the Incas.
Answer: Option D
<u>Explanation:</u>
Incas was also known as the Inca Empire or the Incan Empire was known as the largest empire in pre-Columbian America. Most of the scholars do consider its political and administrative structure. And these structure are considered as the most developed Empire in the Americans before the arrival of the Columbus happened.
Answer:
As San Francisco and other cities in the Bay Area commemorate the anniversary of the 1989 Loma Prieta earthquake, we are reminded once again of the need to get prepared for the next natural disaster. The 6.9 magnitude earthquake not only resulted in collapsed homes, displacement of residents, but it also was a terrifying reminder of the need to reinforce the structures we use every single day.
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Explanation: They both study and address environmental issues. The ultimate goal of both, and the similarity between them, is to improve the environment as a place of life for each of us. In both cases, meaning similarity, the role of man in improving the living environment is emphasised. The scientific approach reveals and gathers significant scientific facts and knowledge that can again be used by various environmental activists in protection of the environment in terms of both prevention and restoration of polluted natural resources.
The difference between them is that environmental science uses scientific methods to study the environment, and it can be said that they use an objective scientific approach to this problem. Environmentalists, on the other hand, use a wider range of ways to deal with this problem, often with an emotional and biased approach. Environmentalists take a wide variety of actions, which of course are not just scientific, in the pursuit of environmental improvements, living conditions. So environmental science is looking for knowledge on this subject, such as human interaction with nature and vice versa pointing it only to scientific facts within the institutions intended for such a thing. Again, on the other hand, environmentalists often have political appearances on this issue, and then they often perform dramatically in order to point out in important political places human impact on the environment, which can be detrimental to it and ultimately pernicious to the people themselves. So environmentalism can be said to be a kind of social concern for the environment and people, while environmental science about the environment with only scientific facts, and with that knowledge collected, emphasises the importance of environmental sustainability.
