Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).

What is the relationship between the binding energy and the mass defect * 1 poi of an atomic nucleus? The binding energy is the energy equivalent of the mass defect, as given by EO = mc. The binding energy is the energy equivalent of the mass defect, as given by EO = mc2. The binding energy is the energy equivalent of the mass defect, as given by E0=mc. The binding energy is the energy equivalent of the mass defect, as given by E0=mc2.

Experimentally, it is found that natural potassium emits 31 beta particles per second per gram and 3.4 gamma rays per second per gram. With this data, determine the half- life period of K40. (The isotopic concentration of K40 is 0.0118% .)

Determine the reactions Ay and By at the supports A and B, respectively. Ay Reaction Av 1. 15.6 2. 18.7 3. 19.3 4. 17.5 Reaction By 1. 13.6 2. 14.8 3. 17.3 4. 16.7 8 k 3 ft 3 ft. 6 ft 24 k 6 ft 4 ft 4 k By

A 250 mg sample at 228 Ac has an activity of 207 * 10 ^ 16 atoms per second. What is the half life?

What is the range of a beta-interrupted IMEV particle in aluminum Adha whose ejection channel is 2.698 g/cm^3 and the kotlio enemy is 26.98, and the adha is over the range in silicon Adha 2.329 g/cm2.

28.3 A mass balance for a chemical in a completely mixed reactor can be written as dc V F- Qc - kVc dt where V = volume (12 m³), c = concentration (g/m³), F - feed rate (175 g/min), Q= flow rate (1 m'/min), and k = a second-order reaction rate (0.15 m/g/min). If c(0) = 0, solve the ODE until the concentration reaches a stable level. Use the midpoint method (h = 0.5) and plot your results. Use Euler, Heun, 2 order RK methods. 28.37 For a simple RL circuit, Kirchhoff's voltage law requires that (if Ohm's law holds) di L+ Ri = 0 dt where i = current, L = inductance, and R = resistance. Solve for i, if L = 1, R = 1.5, and i(0) = 0.5. Solve this problem analytically and with a numerical method. Present your results graphically. Use Euler, Heun, 2d order RK methods. Page 2 of 3

The radionuclide 32P (T1/2 = 14.28 d) is often used as a tracer to follow the course of biochemical reactions involving phosphorus. (a) If the counting rate in a particular experimental setup is initially 3050 counts/s, how much time will the rate take to fall to 170 counts/s? (b) A solution containing 32P is fed to the root system of an experimental tomato plant, and the 32P activity in a leaf is measured 3.48 days later. By what factor must this reading be multiplied to correct for the decay that has occurred since the experiment began?

Number 6

The C14 with an activity of 10 Ci is in a 1.0 mm thick lead box. Calculate the number of beta particles per second at just outside of the box.