AQ2.8.1 OPEN-CIRCUIT VOLTAGE
(1 point possible)
The current of an ideal p-n junction under illumination can be described by:
J(V)=J0(eqVkT1)Jph
where J0 is the saturation-current density, q the elementary charge, V the voltage, k the
Boltzmann's constant,

ANSWER 5.18
Given data
The catalytic reaction is conducted in a 0.25 cm radius pellet.
The reaction is:
A + B2 C
The mechanism for the reaction - A, B2 and C are in adsorption absorption equilibrium with the
surface. The reaction shown here is bimolecular

First: The equation that you used to find "h" is wrong
Second: you have to find the Nusselt number "Nu" by using the following equation:
1
Nu=( 0.037( L )0.8871) Pr 3
Then use this equation to find "h":
h=
k
Nu
L
That what our Prof. said

A
MAT2MEC
ASSIGNMENT 3, 2015
Place your assignment solutions in the appropriate box on the third level of the Mathematics and
Statisics Building (Physical Sciences 2) before 2 pm on Tuesday 8 th September.
In submitting your work, you are consenting that

1.
Here in this question, our main aim is to calculate the values of the speed
For part 1
In the part 1, we have to calculate the value of the resonance condition and the speed of the
sound.
Here the
Frequency of the resonator= constant
Resonator length =

1
Ex#1:
a. As shown on the white board in the last two lectures, use Gaussian elimination with
backward substitution and two-digit rounding arithmetic to solve the following three
linear systems, A, B and C. (Do not reorder the equations). (Hand in your w

There has been a major growth in the use of engineered composites for various engineering applications
because of their many advantages over traditional construction materials.
In civil infrastructure, including their applications include all- such as
com

Question One: Calculate the diffusivity by following
the below statement and requirements
In a thin film technique used for pyrolysis process, and at
Temperature of 500C , thethin-film allows unstable
volatile products to diffuse through the reactive medi