Civil and Environmental Engineering Answers

Write a balanced equation for 106/46 Of (a,p) 109/47 Ag

Calculate the nuclear binding energy ( in J) and the nuclear binding energy per nucleon of 209/83 Bi (208.9804 amu)

Carbon-11, used in medical imaging, has a half- life of 20.4 min. The carbon-11 nuclides are formed, and the carbon atoms are then incorporated into an appropriate compound. The result ing sample is injected into the patient, and the medical image is obtained. If the entire process takes five half-lives, what percentage of the original carbon-11 remains at this time?

Write a balanced nuclear equation for the reaction in which oxygen- 15 undergoes position emission

A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to C-14 is measured to be 11.6 disintegrations per second. The activity of a carbon sample of equal mass from fresh wood is 15.2 disintegrations per second. The half-life of C- 14 is 5715 year. What is the age of the archeological sample

A sample to be used for medical imaging is labeled with F-18, which has a half- life of 110 min. What percentage of the original activity in the sample remains after 300min?

Predict the mode of decay of (a) plutonium-239, (b) Indium-120. Show your solution

Predict the mode of decay of (a) plutonium-239, (b) Indium-120. Show your solution

Which element undergoes alpha decay to form lead- 208? Show your solution

two c310 x 45 channels are latticed together so they have equal moments of inertia about the principal aves. determine the minimm length of a column having this section. assuming pinned ends. e 200 gpa. and a proportional limit of 240 mpa. what safe load will the column carry for a length of 12 m with a factor of safety of 2.5?