The type of energy that is produced by all the renewable energy <em>resources</em> in order to generate <u>electricity</u> is mechanical energy.
<h3>What is mechanical energy?</h3>
<em>Mechanical energy</em> is generated from motion that is regarded as kinetic energy. It is achieved when renewable resources such as <em>sun</em>, <em>wind</em>, <em>hydro</em>, and <em>tidal</em> produce hydroelectricity in plants.
Therefore, large factories and machines turbines produce electricity by using energies from renewable resources.
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brainly.com/question/1932868
Answer:
Coal is called a fossil fuel because it was made from plants that were once alive! Since coal comes from plants, and plants get their energy from the sun, the energy in coal also came from the sun.
Answer: is constant
Explanation:
In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.
Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.
This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.
It is <span>C. super continent, referred to as Pangaea
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Answer:
China is a very large country that has border with 14 countries. However, in this case only the Chinese landforms that serve as borders will be listed:
-The Himalayan mountain range in western China that serves as a border with Nepal.
-The Gobi desert, at the north of China which is the border with Mongolia.
-The Tibetan plateau in western China that borders on India, Bhutan and Nepal.
-The Manchurian plain to the northeast of China, is the largest plain of the country that borders North Korea.
