1. What are the signs of the charges on the three forms of radiation (alpha particles, beta particles, and gamma rays)?2. Which particle (alpha or beta) is more massive?3. Do all (a, b, and y) carry energy? Do they all carry momentum?4. Say that you use cardboard, copper foil, aluminum plate, and lead sheet to block beta particles. If you had equal thicknesses of each substance, which would be the most effective blocker? Which would be the least effective blocker?
