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For dioxins in fathead minnows, the BCF = 29,200. The half-life for elimination of dioxins from fathead minnows is 14.5 days.
Three radioactive sources each have activities of 1.0 micro Curies (Ci) at t=0. Their half lives are 1 sec, 1 hour and 1 day respectively
Describe the experimental evidence for wave-particle duality. State the uncertainty and correspondence principle.
Pu-241 is produced from neutron absorption by Pu-240 (which is produced by neutron absorption by Pu-239). Calculate the fractional in-growth of Am
The following percentages of three pesticides added to a soil remained after increasing times.
If you body is emitting infrared radiation of wavelength 9.4 x 10^(-6)m, what is the energy of the released photons?
Assuming no energy escapes, find the approximate temperature rise of 1kg of 235U over 1year from decay.
Carbon-14 datin of ancient objects requires that material to be organic in order to assay its age. You hear someone sat that a dinosaur bone ws carbon dated
The muon is a subatomic particle with the same charge as an electron but with a mass that is 207 times greater. m_u = 207m_e.
Prove that the De Broglie wavelength associated with a particle having kinetic energy K which is not negligible compared to its rest energy m0 c^2 is given by
How fast does a proton have to be moving is order to have the same de Broglie wavelength as an electron that is moving at 3.75x10^6 m/s? Units are m/s.
Which material would have the strongest compressive strength?
Name the three kinds of strength used to characterize materials AND give an example of a material that are strong in each of these modes.
If a radioactive parent isotope decays to produce a stable daughter isotope, what will be the daughter to parent ratio (D/P) after 9 half-lives?
Consider the following nuclear processes which are used to produce isotopes used in medical imaging:
Compare the nuclear radii of the following nuclides: (2 1H), (60 27Co), (197 79Au), (129 94Pu).
A patient undergoing radiation therapy for cancer receives a 215-rad dose of radiation. (a) Assuming that the cancerous growth has a mass of 0.17kg
The half-life of iodine-131, an isotope used in the treatment of thyroid disorders, is 8.04 d.
How many protons and neutrons does each of the three isotopes of potassium have?
A 500-microFarad capacitor is discharged through a 4.7-Mega ohm resistance. What is the time constant?
The isotope 234U92 undergoes five successive alpha decays. Identify the daughter nucleus at each step.
Carbon-14 is a radioactive Isotope of Carbon-12. How many protons and neutrons are in the nucleus of C-12? __________ In C-14 ___________
A Hydrogen atom and a Helium atom each with 4 eV of KE approach a thin barrier 6 MeV high which has the greater probability of tunneling through the barrier?
How many different elements are in the compound C6H12O6?
In an electrolysis experiment, a student plated silver onto an electrode, maintaining a current of 1.600 A for 46.0 min. What mass of silver was deposited?