Question

Show an example of applying Fresnel’s equations to calculate amplitudes and intensity of reflection and transmission

Answer #2

answered by: anonymous

Please calculate the total transmission (I2/I1) of ultrasound
intensity from medium 1 to medium 2 in the following situations:
(a) medium 1 directly contacts with medium 2. The acoustic
impedences are noted in the figures below. (b) medium 3 is inserted
between media 1 and 2. The acoustic impedence of medium 3 is 6.6
MRayls. (c) If the medium 3 is air with an impedence of 0.0004
MRayls. The attenuation in all the media is negnected.

Calculate and interpret an adult BMI
Make up an example and please show process <3

1.Define the following parameter with its appropriate units and
formulas.please add your own example(question) and show the
work.
a) Electromotive Force (E),
2.Define the following parameter in Electrostatics, and write
down the necessary formulas and corresponding units for these
parameters:please add your own example(question) and show the
work
(b) Electric Field Intensity

Differential Equations
3a. Use the integral definition of the Laplace transform to show
that Carefully indicate the range of s for which the
Laplace transform is defined, and clearly show where you use this
in your calculations.
b. Calculate the convolution

Show in details how we can mathematically
modify the two equations below to get a straight-line graph from
each of these equations. Compare the 2 new equations to the general
equation of s straight line and show what the slope (m) represents.
How can we calculate the value of capacity from the slope of the
line?
Equation 1: V = V0e-t/RC
Equation 2: V = V0(1 - e-t/RC)

1.
a. How do you represent chemical reactions by using chemical
equations? Please provide an example.
b. How do you calculate the amount of energy released/absorbed
in a chemical reaction by using bond energies? Please provide an
example.
c. How do you determine whether a reaction is wxpthermic or
endothermic based on the sign from the process above. Please
provide an example.

In this example we will calculate the coefficients of static and
kinetic friction using two equations along with Newton’s second law
of motion. Suppose that a delivery company has just unloaded a 500
N crate full of home exercise equipment in your level driveway. You
find that to get it started moving toward your garage, you have to
pull with a horizontal force of magnitude 230 N. Once the crate
“breaks loose” and starts to move, you can keep it...

(a) Use conceptual arguments to show that the intensity of light
(energy per unit area per unit time) reaching the film in a camera
is proportional to the square of the reciprocal of the
f-number, as follows:
I ∝1/(f/D)^2
(b) The correct exposure time for a camera set to f/1.8
is (1/500) s. Calculate the correct exposure time if the
f-number is changed to f/2 under the same
lighting conditions. (Note: "f/2," on a camera,
means "an f-number of 2.")

For each statement below, either show that the statement is true
or give an example showing that it is false. Assume throughout that
A and B are square matrices, unless otherwise specified.
(a) If AB = 0 and A ̸= 0, then B = 0.
(b) If x is a vector of unknowns, b is a constant column vector,
and Ax = b has no solution, then Ax = 0 has no solution.
(c) If x is a vector of...

Using Hess's Law and some or all of the equations (1) - (4)
below calculate ΔH at 25C for coal gasification: 2 C(coal) + 2
H2O(g) CH4(g) + CO2(g) ΔH = ? 1. CO(g) + H2(g) C(coal) +
H2O(g) ΔH = −131 kJ/mol 2. C(graphite) + 2 H2(g) CH4(g) ΔH =
−74.8 kJ/mol 3. CO(g) + 3 H2(g) CH4(g) + H2O(g) ΔH = −206 kJ/mol
4. CO(g) + H2O(g) CO2(g) + H2(g) ΔH = −41...

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