Based on your experiences so far, you are tasked to look back and give advice toyourself, back in July 2020. Will you or will you not enroll for this academic year? Why?

Why are some galaxies’ spectra blueshifted rather than redshifted? question 4 options:

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.