Now you have a nucleus with 17 protons at x = 5.8 Angstroms on the x-axis. How much work would it take to bring in ANOTHER nucleus with 14 protons from 1 m away and place it at y = 8.0 Angstroms on the y-axis?

Find A and identify X in the following nuclear reactions: (a) ¹H + Be → AX + n; (b)¹²C + ¹H → AX; (c) 15N + ¹H→ 4He + AX. (a) A = (b) A = (c) A = HI i Hi X: X: X: >

Fusion in the Sun occurs mostly through the proton-proton chain, which starts with the fusion of two protons, 2 H → D+e+ +ve. The second step is the fusion of one of these particles with a third proton to make He-3. a) Name the the three particles created in the first step. b) Write the reaction for the second step

The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account.   How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 9 nucleons into free energy?

You are training for an upcoming Physics Olympics competition. Your coach gives you the following problem and a short time interval to solve it: For radioisotopes with very long half-lives, we cannot measure the half-life in the laboratory, because the activity does not change enough in a reasonable time interval to generate a graph like in the figure below. N(1) Nor No N=Noe The time interval T₁/2 is the half-life of the sample. T1/2 271/2 Ⓡ But suppose you have been given a sample of pure 115In that has been gathered from meteoroids. The sample has a mass of 94.1 g and has a measured activity of 24.5 Bq. Quick! Determine an estimate f the half-life of 1151n (in years). Your future as a Physics Olympic team member depends on your answer! уг

b) Complete the following decay reaction by identifying both the temporary nucleus (??) and the end product (?) that it decays into. In this case, sodium-23 is bombarded with protons, forming a short-lived nucleus which quickly undergoes alpha decay. 2Na+H → (??) → (⁄?) + ª Enter the chemical symbol for the temporary nucleus: Enter the mass number for the end product, A = Enter the atomic number for the end product, Z = Enter the chemical symbol for the end product: AV A/ AV 10

A piece of charcoal (totally carbon) from an ancient campsite has a mass of 262 grams.  It is measured to have an activity of 29 Bq from 14C decay.  Use this information to determine the age of the campfire.   Your answer is required to be in years. Information:    14C half-life is 5730 years. 1 gram of living carbon has 6.52x1010 atoms of 14C

Now you have a nucleus with 20 protons at x = 7.9 Angstroms on the x-axis. How much work would it take to bring in ANOTHER nucleus with 4 protons from 1 m away and place it at y = 7.0 Angstroms on the y-axis?   Question 10 options: A 50.4 eV B 100.8 eV C -8.2 eV D 109.0 eV

a) Calculate the energy corresponding to the Gamow peak for proton-proton fusion at T = 108K. b) Describe the PP chains in stars. c) Consider elastic scattering of electrons by a nucleus with charge distribution given by if r Ri, Pe(r) = = p/2 0 if Ri Ro, where r represents the radial distance from the centre of the nucleus. Calculate the form factor of the process. d) Consider two nuclei 2i4X2i+1 and 2, where i is a positive integer number. According to the semi-empirical mass formula for the binding energy, which one has larger binding energy? Justify your answer.

Use the following data to calculate the binding energy per nucleon in MeV of the Rhodium-103 nuclide Mass of   atom = 102.905503 u Mass of proton = 1.007276 u Mass of n Use the following data to calculate the binding energy per nucleon in MeV of the Rhodium-103 nuclide Mass of   atom = 102.905503 u Mass of proton = 1.007276 u Mass of neutron = 1.008664 u Mass of electron =    0.00054858 u            1 u = 931.494 MeV             eutron = 1.008664 u Mass of electron =    0.00054858 u            1 u = 931.494 MeV