help After the Sun exhaust s its nuclear fuel, its ultimate fate may be to colla

Question

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After the Sun exhaust s its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. In this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of the Earth.(a) Calculate the average density of the white dwarf Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy t o minimize roundoff error. kg/m3 Calculate the surface free- fall acceleration. Calculate the gravitational potential energy associated with a 1.14-kg object at the surface of the white dwarf.

Explanation / Answer

mass of sun=1.989e30kg

radius of earth=6,371 km

so

density=mass/volume=1.83621427

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