Leptons and quarks are called the survivors. a) True b) False
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Leptons and quarks are called the survivors.
a) True
b) False
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- 1) a) Name four fundamental forces name the exchange particle associated with each force. Explain what an exchange particle does.The half life of C14 is 5570 years. Find the mass of 2 mCi of radioactive C145. Pion beams (*) are used to treat cancer in radiation therapy. The energy comes from the decay of the pions. Negative pions usually decay into a muon and a muon antineutrino. (a) (b) Write out the complete decay of a л into stable particles. How much energy is released from a complete decay? Assume the neutrino masses are negligible. (c) How many pions need to decay to give a dose of 50.0 Gy to 10.0 grams of tissue?
- 5. How much energy is released in the decay + → µt + v„? 6. How much energy is required to produce a neutron-antineutron pair?16. Which of the following combinations of quarks makes up a neutron? a. Two down (d) quarks and one strange (s) quark. b. Two down (d) quarks and one up (u) quark. c. Two charm (c ) quarks and one strange (s) quark. d. One down (d) quark) and two up (u) quarks.What is the charge of a u quark and write quark representation for neutron