the escape velocity"v" of the mass "m" from a spherical mass M and redious R can be calculate using a)explain how this equation is the result of application of conservation of energy. b) determine the energy needed to escape from the sun.(Msun=1.99*10^30 kg. Rsun= 6.96*10^8m).c)calculate the escape velocity from the sun. d) if sun expands somehow, mass remaining same, how would the escape velocity change?
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