Physics, 10.07.2019 22:20 tiffxnnyyy
Afrenkel defect in a crystal is formed when an atom leaves a normal site and moves to an interstitial site (a space inside the crystal). the energy of formation of the defect is e suppose a crystal has n normal sites and n' interstitial sites (n' is usually similar to n.) (a) (i) show that the multiplicity q of the state in which the crystal has n frenkel defects is given by n'n! Ļ- (n n)(nn)n [2 marks] (11 write down an expression for the entropy s as a function of n [2 marks] equilibrium is (b) show that, for n < < n, n', the number of frenkel defects at (nn exp-s/2kt) [4 marks] (c) explain briefly why the equilibrium number of vacancies differs from zero when the crystal is at temperature t greater than zero
Answers: 1
Physics, 22.06.2019 10:10
Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.
Answers: 2
Physics, 22.06.2019 12:20
A2.0 Ī¼f capacitor and a 4.0 Ī¼f capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.
Answers: 2
Physics, 22.06.2019 12:30
Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.
Answers: 1
Afrenkel defect in a crystal is formed when an atom leaves a normal site and moves to an interstitia...
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