The parent of mass 242 u initially at rest decays into alpha and daughter. What at is the ratio of kinetic energy of alpha to kinetic energy of daughter

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the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.