من طرف Abdala الجمعة 30 مايو 2008, 1:52 amDefine the following
a- isotopes , radiation , half life , curie
2-what is the units are measuring the radiation dose?
-B-How much energy is required to break up C12 into 3 alphaparticles?note that
[/size] alpha mass=4.00260u
.B-Explain the theory of C14 radioactivity dating theory?
3-deduce the radioactivity decay law N=N0*e-lamda*t that lamda=0.693/t
-if the activity of a certain radioactive decreases to 1/8 of the original value in 50 days, what is the half life of the sample?
B-what is the effect of radiation on human body?and what effects do differant doses of radiation have on people?
4-write short notes on
1- radiation therapy
2-food irradiation مش عالينا[b]
