Escape velocity is (vescape = 2 G Msun /Rsun) of 620 km/s to leave from the Sun’s surface. When the Sun becomes a red giant, what will the escape velocity be when it is 50 times larger, with a mass of only 90% what it has today?
What will the escape velocity be when the Sun becomes an AGB star with a radius 200 times greater and a mass only 70% of today?
Thanks.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up