Sketch a diagram indicating the s-process path from 102 Ru to 109 Ag. Specify the type of each process (i.e. neutron capture, electron capture, beta decays) in the path.

Question 1: The table shows two isotopes of potassium and two isotopes of calcium. 39K 39 Ca Stable ß* decay 38.96371 38.9707 Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass/u Mass defect / u Binding energy / J 42K ß decay 41.9624 Mass of the neutron = 1.008665 u 19 19 ta min 23 42.34797 0.38557 5.76 x 10-11 2 051 oqque 42 Ca stable 41.95863 Mass of the electron = 0.000549 u Mass of the proton = 1.007276 url millons voled pringle bre noljenimaxe al prderobny v nollenimexe erit lo anpitibnco art di ballamos svar en talean blow tert elshatem vos maxe erii otni triquonion aver a) Use data about potassium-42 to explain the concept of mass defect. oo will teanu snimaxe edt sot jaqeq maxe eft overmat ym of 820308 ever b) Complete the table and to calculate the mass defect and binding energy of 39K. Show your calculations in the space below.

Consider the fission reaction see image After having found the missing nuclide, calculate the Q-value of the reaction. Enter your result in MeV to 1 decimal place

In which element is the mass per nucleon greatest? Least?

Question 04 The moderator temperature coefficient for a reactor is -8.2 pcm/ F. Calculate the reactivity defect that results from a temperature decrease of 5° F. Px = (Ax)(ax)

Question 9 Why is a moderator required in a thermal nuclear reactor core? A To prevent overheating of the fuel rods. B To absorb surplus neutrons. C To shield the surrounding area from dangerous gamma radiation. To reduce the kinetic energy of thermal neutrons.

For the fusion reaction shown below, find the amount of energy (Q) released. (Enter your answer in MeV.) H+ C- N +Y MeV

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