Physics, 29.07.2019 21:30 mercymain1014

Which two energy sources can a star maintain its internal thermal pressure? which two energy sources can a star maintain its internal thermal pressure? nuclear fission and gravitational contraction nuclear fusion and chemical reactions chemical reactions and gravitational contraction nuclear fusion and gravitational contraction nuclear fusion and nuclear fission?

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Which two energy sources can a star maintain its internal thermal pressure? which two energy sourc...