An SI fiber is single mode at 1.4 um but not at shorter
wavelengths; n1 =...
An SI fiber is single mode at 1.4 um but not at shorter
wavelengths; n1 = 1.465 and n2 = 1.46. Compute the core radius.
Find the number of modes at 0.8, 0.85, and 0.9 um using the mode
chart.
The double bonds are stronger and shorter than single bonds. For example, a C−C single bond has an average bond energy of 347 kJ/mole while a C=C double bond has an average bond energy of 611 kJ/mole. Use valence bond theory to explain why a double bond is not simply twice as strong as a single bond.
A pure Si detector operating in photoconductive mode and at room
temperature absorbs a 1.04MeV gamma-ray photon produced by the
decay of a 136Cs nucleus. The detector has an active area of 1 cm2
and is 0.5 cm thick. (a) Compute the number of electrons generated
by the absorption of this photon. (b) Compare this number with that
expected to be in the CB in the absence of any illumination (this
would be the background signal). Will the signal from...
How is it that a single photopigment can give a different
response to different wavelengths, yet an organism with only one
receptor type (and one variety of photopigment) does not have true
color vision?
Juett Company produces a single product. The cost of producing
and selling a si product at the company's normal activity level of
70,000 units per month is as
producing and selling a single unit of this
Direct materials …………………………………………………………….. $29.60
Direct labor…………………………………………………………………… $5.80
Variable manufacturing overhead………………………………….. $2.50
Fixed manufacturing overhead………………………………………. $17.20
Variable selling & administrative expense……………………… $1.80
Fixed selling & administrative expense………………………….. $6.70
The normal selling price of the product is $72.90 per unit. An
order has been received from...
for the biceps
and triceps muscle
How is the
mechanical behavior of a single muscle fiber in tension
different
from the whole
muscle? What is the functional value?
For Si single crystals: ni = 1.45 x 1010 cm-3 ; electron
mobility µn = 1400 cm2 V-1 s-1 ; hole mobility µp = 450 cm2 V-1 s-1
. (a) A single crystal of Si is highly doped with B (a p-type
dopant). It has a measured resistivity of 1.5 x 10-3 W-cm.
a) What are the free hole (p) and free electron (n) concentrations
(in carriers/cm3 ) in the material?
b) If a quantum dot (diameter = 5 nm)...
1a). For a single, handheld, GPS receiver operating in point
positioning mode: i. Explain how the receiver uses signals from
four satellites to determine its position on Earth. ii.
Approximately what East, North and Height accuracy would you expect
from this receiver? iii. What are the main factors that limit the
positioning accuracy of this receiver? (b) What
techniques are used to overcome the spatial accuracy limitations of
a single, handheld, GPS receiver operating in point positioning
mode?