please show work for part a and b in problem 1 for upvote! :)

Problem 1. For the following problems, the gyromagnetic ratio of protons is n = 267.5 x 106 rad s-1 T-1 = 42.5 MHz T-1 (a) Determine the fraction of protons aligned with an external magnetic field of B = 3.0T if the protons are at room temperature (T = 300K). (b) If protons are in a B = 7.0 T magnetic field, what temperature T must they be for 51% of them to be aligned with the field