1. A rocket ship leaves the earth at a speed of H.98c. How much time does it take for the minute hand of a clock in the ship to make a complete revolution as measured by an observer on the earth? 2. An electron with a rest mass energy = 5.51 Hev is accelerated to a Kinetic energy of 2.53 Hev. {a} What is its total Energy? {b} What is gamma? E: {c} What is the momentum of the electron? 3. What is the de Broglie wavelength of an electron, m = 9.1 x 15?1 kg , whose speed is 9 x 1F mfs? 4. Find the wavelength of the photon emitted when a hydrogen atom goes from the n = 5 to the n = 3 state. 5. Tritium {1H3} has a half life of 12.5 years and decays by beta decay. {a} What is the decay constant in disintegration per year? {b} If the initial mass of pure tritium is 5.24 grams how much will be left after 25 years? 5. Find the binding energy per nucleon for sea {mass = 13.5534] given that {F} mass = 1.93T325 and a neutron's mass = 1.863555 ?. . Determine the energy. D valuer for the reaction : 2:13le + 13" .' 2'11Na + Ail-IE HE 4. 302533 Al 25.931541