EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 42, Problem 37P
To determine
The verification of the
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(b) An old campfire is uncovered during an archaeological dig. Its charcoal is found to containless than 1/200 the normal amount of 14C. Estimate the minimum age of the charcoal (in years).Assume half life of 14C is 5730 years.
(b) The deuteron is an 'iso-singlet'. Calculate the ratio of the cross-sections for the
following reactions:
i. p+p+d+n+
ii. p+nd+nº
iii. n+nd+π¯
(iv) Assume that the concentration of NO, in Delft today is 50 ug/m'. Convert that to
ppb (show the calculations.
(v) How many water molecules are approximately included in a 3-nm, a 30-nm and a
300-nm water droplet? (justify your answer)
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- To obtain the most precise value of BE from the equation BE=[ZM(1H)+Nmn]c2m(AX)c2, we should take into account the binding energy of the electrons in the neutral atoms. Will doing this produce a larger or smaller value for BE? Why is this effect usually negligible?arrow_forwardData from the appendices and the periodic table may be needed for these problems. Show that the activity of the 14C in 1.00 g of 12C found in living tissue is 0.250 Bq.arrow_forwardData from the appendices and the periodic table may be needed for these problems. A 5000Ci 60Co source used for cancer therapy is considered too weak to be useful when its activity falls to 3500 Ci. How long after its manufacture does this happen?arrow_forward
- (a) Show that if you assume the average nucleus is spherical with a radius r=r0A1/3, and with a mass at A u, then its density is independent at A. (b) Calculate that density in u/fm3 and kg/m3, and compare your results with those found in Example 31.1 for 56Fe.arrow_forwardWhat is the mass of 60Co in a cancer therapy transillumination unit containing 5.00 kCi of 60Co?arrow_forwardThe purpose of producing 99Mo (usually by neutron activation of natural molybdenum, as in the preceding problem) is to produce 99mTc. Using the rules, verily that the decay of 99Mo produces 99mTc. (Most 99mTc nuclei produced in this decay are left in a metastable excited state denoted 99mTc.)arrow_forward
- (a) Find the total energy released in MeV in each carbon cycle (elaborated in the above problem) including the annihilation energy. (b) How does this compare with the protonproton cycle output?arrow_forwardCompute the approximate nuclear radius of: U (ن) (d) Nit -12 I allatiun c Actinium-89arrow_forwardEstimate the approximately value of the temperature necessary to overcome the Coulomb repulsion barrier of the D-T fusion reaction and discuss why this very high temperature is needed?arrow_forward
- Compute the approximate nuclear radius of: (₂) (c) Palladium-46arrow_forward(ii) Explain in detail two Heisenberg uncertainty principles. Apply Uncertainty principle to estimate the kinetic energy (in MeV) of a nucleon bound within a nucleus of radius 10-15 m.arrow_forwardThe half-life of 198Au is 2.7 days. Calculate, (a) The decay constant, l (b) The activity R of 1.00 mg of 198Au. Take the molar mass of 198Au to be 198 g/mol.arrow_forward
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