Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
expand_more
expand_more
format_list_bulleted
Question
Chapter 38, Problem 72P
(a)
To determine
The number density of free electrons for Magnesium and compare the result with values in Table
(b)
To determine
The number density of free electrons for Zinc and compare the result with values in Table
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Example (3-2): Calculate the conductivity of an intrinsic silicon crystal if
the number of released electrons at a specific temperature is one electron for
each 10of valence electrons. The silicon density is (2.33*10°Kg/m³), the
silicon atomic weight is (28.086), the electron mobility is (0.135 m²/v.sec.)
and the hole mobility is (0.048 m²/v.sec.).
Sol.)
The intrinsic carrier concentration of silicon (Si) is expressed as
- E
n₁=5.2×10¹5T¹.5exp-
i
electrons at 30°C.
n =
cm
-3
g
2kT
cm
-3
where Eg = 1.12 eV. Determine the density of
Round your answer to 0 decimal places.
(1-8) Find the diffusion coefficient of holes and electrons for Germanium at 300 k. The
mobilities in cm?/v-s at 300 k for electrons and holes are respectively 3600 and 1700. Density of carriers is
2.5x 10m .Boltzmann constant K=1.38 x 10.
carrier
Chapter 38 Solutions
Physics for Scientists and Engineers
Ch. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10P
Ch. 38 - Prob. 11PCh. 38 - Prob. 12PCh. 38 - Prob. 13PCh. 38 - Prob. 14PCh. 38 - Prob. 15PCh. 38 - Prob. 16PCh. 38 - Prob. 17PCh. 38 - Prob. 18PCh. 38 - Prob. 19PCh. 38 - Prob. 20PCh. 38 - Prob. 21PCh. 38 - Prob. 22PCh. 38 - Prob. 23PCh. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - Prob. 27PCh. 38 - Prob. 28PCh. 38 - Prob. 29PCh. 38 - Prob. 30PCh. 38 - Prob. 31PCh. 38 - Prob. 32PCh. 38 - Prob. 33PCh. 38 - Prob. 34PCh. 38 - Prob. 35PCh. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - Prob. 40PCh. 38 - Prob. 41PCh. 38 - Prob. 42PCh. 38 - Prob. 43PCh. 38 - Prob. 44PCh. 38 - Prob. 45PCh. 38 - Prob. 46PCh. 38 - Prob. 47PCh. 38 - Prob. 48PCh. 38 - Prob. 49PCh. 38 - Prob. 50PCh. 38 - Prob. 51PCh. 38 - Prob. 52PCh. 38 - Prob. 53PCh. 38 - Prob. 54PCh. 38 - Prob. 55PCh. 38 - Prob. 56PCh. 38 - Prob. 57PCh. 38 - Prob. 58PCh. 38 - Prob. 59PCh. 38 - Prob. 60PCh. 38 - Prob. 61PCh. 38 - Prob. 62PCh. 38 - Prob. 63PCh. 38 - Prob. 64PCh. 38 - Prob. 65PCh. 38 - Prob. 66PCh. 38 - Prob. 67PCh. 38 - Prob. 68PCh. 38 - Prob. 69PCh. 38 - Prob. 70PCh. 38 - Prob. 71PCh. 38 - Prob. 72PCh. 38 - Prob. 73PCh. 38 - Prob. 74PCh. 38 - Prob. 75PCh. 38 - Prob. 76P
Knowledge Booster
Similar questions
- Check Your Understanding If a=3+4i , what is the product a* a?arrow_forwardQI) given a line charge distribution of where A(3 , π2,1) and B(4, π, 6) . 10 -12 C/m) on z axis, find VABarrow_forwardIn solid KCI the smallest distance between the centers of a. potassium ion and a chloride ion is 314 pm. Calculate the length of the edge of the unit cell and the density of KCI, assuming it has the same structure as sodium chloride.arrow_forward
- For the face centered cubic crystal described above, i.e. a = 0.7\: nma=0.7nm, calculate the surface density of atoms (i.e. number of atoms per unit area) on the (111) plane in units of cm^{-2}cm−2. Values within 5% error will be considered correct.arrow_forwardThe induced electron flow in Situation A would be ___.The induced electron flow in SItuation B would be ____.arrow_forwardTo obtain the value of an unknown electrical charge, a group performed an experiment. From the graph of the electric potential (voltage) V in volts, as a function of the inverse distance (1/r) in m^-1, the group obtained an angular coefficient 6838 Nm^2/C by the linear equation of the best straight line. Knowing that V=(kq)/r, calculate the value of the electric charge, in nC (nanocoulomb), from the slope provided by the best line. Round the answer to a whole number. Use: k = 8.9876 x 10^9 N⋅m^2⋅C^−2arrow_forward
- The Type K thermocouple has a sensitivity of about 41 micro-Volts/℃, i.e. for each degree difference in the junction temperature, the output changes by 41 micro-Volts. If you have a 32-bit ADC, what is the smallest temperature change you can detect if the ADC range is 10 V? Try leaving the answer as a decimal with significant digits: e.g., 0.00004100.arrow_forwardHow many peaks would you expect in the 1H NMR spectrum of 1,4-dimethyl- benzene (para-xylene, or p-xylene)? What ratio of peak areas would you expect on integration of the spectrum? Refer to Table 13-3 for approximate chemical shifts, and sketch what the spectrum would look like. (Remember from Section 2-4 that aromatic rings have two resonance forms.)arrow_forwardGiven V(X) = 6.5 In proof testing of circuit boards, the probability that any particular diode will fail is .01. Suppose a circuit board contains 400 diodes. Write the suitable approximate pmf for the number of diodes on a board that fail.arrow_forward
- Find the concentration of electrons & holes in (a) N-type Si at 300K, if the conductivity is 300(N.cm)^-1. (b) Also find these values for P-type Si. Given ni=1.5x10^12 /Cm^3 , µn=1200 * .Cm2/V.sec & up=400Cm^2/V.secarrow_forwardLall space Jall space 6. Self energy of a sphere of radius R and and uniform charge density with total charge Q is[Assume energy is given by U = where dt is elemental volume] 3 Q? Q r)² (4=r²dr) + /, o -)² (4#r² dr) = 1 R 1 Q 2 (True, False) = Lll space 2 €0 E²dr U = 4περτ2 5 4T€0 R 2 4περ R3arrow_forwardFor a material having FCC crystal cell structure, write the expressions for Planar atomic density in planes (0,0,1) and (1,1,0) in terms of atomic radius ‘r’ and calculate for Copper in gms/cm3 . Why metal shows directional nature of properties at atomic level whereas its bulk measured properties are isotropic in nature.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Modern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage LearningUniversity Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
Modern Physics
Physics
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax