My physics teacher has informed us that for our mock waves exam we are going to be given some relativistic questions on doppler shift, as an experiment by our loving masters. We derived the Lorentz factor and some shift equations, but we haven't done anything else and I'd really like some practice applying them before the real thing, however I've been unsuccessful finding any exercises. Could anyone point me in the right direction, or perhaps scan/photograph some questions they've had to do? If the latter, answers under spoiler tags (or whatever they're called) would be appreciated too. Note: The exam is fairly nigh (within 4 days of me posting this) sooner would be better than later, not to be demanding or anything. :-/ Note 2: I may end up writing myself some questions, then putting my working/answer up here seeking naught but confirmation.