Both plz

1) Calculate the gravitational potential p as a function of position * assuming the center of the sun is at x = 0 and the center of the earth is at x = g. For light coming from the surface of the sun, what is the gravitational frequency shift Af / f as detected at the potential maximum, and as detected at the surface of the earth? 2) A black hole's angular momentum cannot exceed the value Lme, = GM / c. For the black hole collision of the famous first LIGO detection, calculate the initial angular momentum of the two black holes, in units of L.., of the final black hole. Do you think the gravitational radiation carried off significant quantities of angular momentum