Aneutral pion (mass = 135 mev) decays into two back-to-back photons in its rest frame [3 points] what is the energy of each photon in the pion rest frame? a. b. [3 points] if the neutral pion has a momentum of 500 mev before it decays, and the photons from the decay are aligned along the direction of motion (i. e. the decay takes place along the direction of motion), what is the energy of each photon?

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d