Cobalt-60 has a half-life of 5.2 years. Determine the amount of cobalt-60 remaining after 3.2 years if the original sample size was 2.0 mg. Select one: O a. 0.054 mg Ob. 0.65 mg O c. 10 mg Od. 13 mga. H 4 He He Traser watches have a lighting system that uses tubes containing tritium (also called hydrogen-3) that has a half-life of 12.32 years. The tritium undergoes beta-negative decay. The emitted beta-negative particles collide with phosphorus based molecules coated on the inside of the glass tubes to produce a green light. The daughter product of the decay of tritium is Select one: Oa. A Ob. B O c. C Od. DIdentify the isotope that has 63 protons and 81 neutrons Select one: O a. europium-81 O b. thallium-81 O c. thallium-144 O d. europium-144 Identify the weakest of the four fundamental forces. Select one: Q a. Gravitational O b. Strong Force O C. Electromagnetic O d. Weak (nuclear) Force Identify the transmutation equation for the decay of carbon-14 a. 14 C 14 B H b 14 14 B 14 14 C H 6 d. 14 14 C Select one: Oa. A Ob. B O C. C Od. D A mass of 3.67 x 10-25 kg is equivalent to an energy of Select one: O a. 4.08 x 10-42 J O b. 1.22 x 10-33 J O c. 1 10 x 10-16 J O d. 3.30 x 10-3 J\fionization 0 ev 8.72 x 102 1.36 x 10 ?" J 2.42 x 10 J NO. 5.45 x 10 J -2. 18 x 10 1 J The energy level diagram for a hydrogen atom is shown. A photon that has an energy of 1.06 x 10-18 J is absorbed by a hydrogen atom. The most likely transition of the electron within the hydrogen atom is Select one: O a. 4 to 3 O b. 3 to 4 O c. 4 to 5 O d. 5 to 4