Sketch the typical structure of bands for a metal and for a
semiconductor indicating which states...
Sketch the typical structure of bands for a metal and for a
semiconductor indicating which states are filled. Why do metals
show the full rainbow upon thermal emission but semiconductors give
off dominantly just one color?
Lane 2 of a PCR shows no bands, indicating an unsuccessful PCR
reaction. The reaction also shows poorly separated bands (larger
bands) in the reference ladder lane. Describe whether or not there
is a connection between the success of a PCR reaction and how well
separated the bands are in your reference ladder.
1-Sketch and explain difference among typical metal, ceramic and
polymer behavior through stress-strain diagram.Sketch and explain
difference among typical metal, ceramic and polymer behavior
through stress-strain diagram.
Text Book- The Science and Engineering of Materials,
Askeland et al. (seven edition)
Home Work- # 6 for Chapter 6
please sovle the question and type the answer in the
computer
thanks,
1-Sketch and explain difference among typical metal, ceramic and
polymer behavior through stress-strain diagram.Sketch and explain
difference among typical metal, ceramic and polymer behavior
through stress-strain diagram.
Text Book- The Science and Engineering of Materials,
Askeland et al. (seven edition)
Home Work- # 6 for Chapter 6
please sovle the question and type the answer in the
computer
thanks,
In a typical microbiology laboratory, reasons for no bands from
a gel of a polymerase chain reaction may be due to errors relating
to omission of ingredients in the reaction mix and absence of the
target sequence in the template DNA. Based on (i) primer problem
and (ii) purity/potential contamination of the target sequence,
explain the reasons for non-appearance on bands.
Describe how the conductivity of a metal and a semiconductor
change with temperature and explain qualitatively why this occurs.
Explain how an insulator’s electron energy band structure prevents
it from conducting electricity. Diagrams may be useful.
sketch, label & discuss the lattice structure showing the
bonding & sketch band diagram. Show the Si chip connected to
D.C. voltage, indicate charge carriers, and show donor/acceptor
levels.
a. A Si doped with Ge( has 4 velectrons).
Sketch the general form of the
spectrum of a typical PWM wave and explain the principle behind
using the PWM method to achieve variable voltage and frequency
generation using inverter circuits. Show how 3-level PWM signals
for driving a single-phase inverter may be generated using the
natural sampling technique. Explain why, despite its simple
concept, the natural sampling is not generally used in a digital
implementation. Make assumptions where necessary.
(a) What is the difference between atomic structure and crystal
structure
(b) Sketch the BCC and the FCC unit cells and show that the
atomic packing factor for a BCC unit cell is 0.68.
(c) Molybdenum has a BCC unit cell, has an atomic radius of
0.1363 nm, and an atomic weight of 95.94 g mol. Compute its
theoretical density and compare your answer with its experimentally
measured density of 10.22 g cm³. The Avogadro’s number is
6.023x1023 atoms mol-...