Biology, 08.11.2019 16:31 vrentadrienneoqug1a

What area of research did brahe assign to kepler, which led to the development of his laws of planetary motion?

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Answer from: ricksterv5000

The correct answer is D.) the retrograde motion of Mars

Answer from: IntellTanito

Answer;

D.) the retrograde motion of Mars

Explanation;Tycho Brahe established an observatory on an island given to him by the king of Denmark where he spent 20 years recording the most precise astronomical observations the Western world had ever seen.Brahe was less competent in constructing models that would substantiate or explain his observations, so he hired Kepler. However, Brahe feared that Kepler would surpass him as the best astronomer of his day. Therefore, Brahe restricted Kepler's access to his research and assigned Kepler to investigate the orbital path of Mars.After his death, Kepler stole Brahe's research and used it together with his own work to formulate the correct model of the solar system and develop the three laws of planetary motion.

Answer from: Quest

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]

Answer from: Quest

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