These are a lot of questions, please take your time with each one. I will leave a good review when you are done.

For this assignment use the following masses for the proton and neutron: Proton: m = 1.00727647 u Neutron: m = 1.008665 u21. A uranium-235 nucleus absorbs a neutron and the splits into a bromine-ET nucleus, a lanthanum145 nucleus and additional neutrons. How many neutrons are released and what is the energy released in the reaction? [3 neutrons, 152.3 Me'u'] [Bromine-3? = 35.320211 u, and lanthanum-145 = 145.325231 u} 22. A neutron is emitted when aluminum2? absorbs an alpha particle. Write the process for this reaction. 23. Write the reaction for the fusion of helium-4 with oxygen 15. How m uch energy does this reaction release? [4.230 MeV] Helium 4 = 4.002503 u oxygen-15 = 15.334315 u neon-20 = 13.332440 u 24. Given the following masses Hydrogen2 2.0141 u hydrogen3 3.0151 u neutron = 1.00:3?-r u helium 4 = 4.0025 u Determine the energy produced in the following fusion reaction: [answer 2 2.32 x 10121] fH+ fH r :He+ 'rr Lesson 4: The subatomic world 25. Find the energy equivalent of the mass of a neutron. [342 MeV] 25. What is the wavelength ofthe photons produced in electronpositron pair annihilation? [2.4 x 10'\" m} 2?. Which fundamental force is the strongest over large distances? What is the strongest over short distances? What is the weakest fundamental force? . _ _ fr _'--. hr. 25. The diagram shows a particle traclt recorded In a bubble _. ' {Q \"x o. chamber at the CERN particle accelerator. The magnetic I" Ff: a" "a field in the bubble chamberwas 1.2Tdirected out ofthe y' III/fix. H '\\ "a page. . J.[-@ I}? i. 1.1: [a] Does the particle haye a positive or negative '5. "y w .I l t f charge? Explain your reasoning. \\' \\g / T [b] Estimate the initial radius of the particle's path. '-..H____r,, g [10 cm] ./ [c] Determine the initial momentum of the particle. 5\"- '~~;1__2_. \"of Assume the particle is an electron or a positron. "' ' [1.3 x 10'2\" N5] 4 r d a El Icrn [d] Why does the particle's path spiral inward? [e] What could cause the short tracks that branch off from the large spiral track? 23. The mass of a psi particle is 3.03? EeWcz. Express this mass in kilograms. [5.505 x 10'\" kg] 30. An Kray photon with a frequency of 1.3 x 1013 Hz collides with a nucleus. Will electron-positron pair production occur? Explain your answer. 31. In the B* decay of nitrogen-12 (12.01864 u) into carbon-12 (12.00000 u), a positron with energy of 11.0 MeV s emitted. What is the energy of the electron neutrino? Assume the mass of the positron is 5.485799 x 104 u (same as an electron) (5.8 Mev) 32. Protons injected into the Tevatron Magnets are synchrotron at the Fermilab travel around a coaxial with + Proton source Main ring rings circumference of 6.4 km. When they are injected into the synchrotron, they have an energy of 8.0 Gev, but when they leave they Collision detector can have an energy of 1.0 TeV. If the protons gain 3.0 MeV in each rotation, how many rotations are required and how far do - Antiproton source Tevatron ring the protons travel? (3.3 x 10* rotations, 2.1 x 10' m) 33. The tracks in this diagram show the creation of two particles in a bubble chamber. Initially, the two particles have the same speed. (a) What evidence suggests that a photon created the two particles? (b) Describe the path of this photon. (c) Which of the tracks shows the path of a positively charged particle? (d) Give two reasons why the other track must show the path of a negatively charged particle. (e) How are the mass and charge of the two particles related? (f) Why is it likely that the interaction involves an antiparticle? 34. Doubly charged magnesium-25 ions are deflected by a uniform magnetic field (B = 0.725 T) in the ion separation region of a mass spectrometer. If these ions have kinetic energy of 8.35 x 10-" J as they enter the ion separation region, what is the radius of curvature of their path? [3.60 x 10-2 m] 35. What is the difference between Hadrons and Leptons? What type of particle is an electron? How about a positron? How about a proton? How about an anti-proton? 36. Identify a major difference that distinguishes (a) mesons from baryons (b) fermions and bosons 37. Compare the quark composition of a proton to that of a neutron. 38. List the 12 fundamental particles of matter in the standard model. 39. Determine the charge on a particle having the quark composition uus. [+1]