Question

Describe the difference between acoustic impedance, specific acoustic impedance and characteristic acoustic impedance.

Answer #1

Acoustic Impedance ) At the
given surface, the complex ratio of effective sound pressure
averaged over the surface to the effective flux (volume velocity or
particle velocity multiplied by the surface area) through it. The
unit is N-s/m^{5}.

Specific Acoustic Impedance )
Specific Acoustic Impedance is the complex ratio of the effective
sound pressure at a point to the effective particle velocity at a
point. The unit is N-s/m^{3}.

Characteristic Acoustic Impedance
) The absolute value of the acoustic impedance is often
called characteristic acoustic impedance and denoted Z_{0}
.

Z_{0} = pc/A

p is volumetric mass density of the medium.

c is speed of sound waves traveling in the medium.

A is aperture with area A

Z_{0} is characteristic
acoustic impedance.

Explain the term acoustic impedance and state the tissue properties
which determine its value

The copper cable with characteristic impedance of 100? is
directly connected to another cable with characteristic impedance
of 100? and is being used for 100Mbit/s data traffic.
Select one:
a. All of the signal energy arriving at the junction will pass
through to the other cable
b. All of the signal energy will be reflected and none will pass
through to the other cable
c. About half of the signal energy will be reflected and half
transmitted through to the...

Describe the characteristic infrared absorption frequencies that
would allow you to distinguish between the pairs:
butanamide and pentan-3-one

Design an RLC series circuit with the following data:
Z0 = 100 Ω (Characteristic impedance)
Frequency = 1 kHz (Frequency where reactance is zero)
R = Z0.
a. Sketch the impedance on a log-log scale. What do you expect
the phase to do?
b. Simulate the circuit in QUCS and compare the result with your
prediction/expectation.
Also elaborate on your interpretation of the response.
c. Can you identify Zo and Frequency features? How well does
your design meet the requirements?...

a. What is the difference between population mean and sample
mean?
b. Describe the difference between point estimate and a
confidence interval?
c. Describe the role that confidence level play in the
confidence interval?

Explain the difference between the “short run” and the “long
run”. Be specific.

What is the difference between a site-specific endonuclease
and a general endonuclease?

What is the difference between a site-specific endonuclease and
a general endonuclease?

A ribbon cable transmission line (sinusoidal excitation) which
has a characteristic impedance of 300 ohm connected to a 50 ohm
load. Calculate:
Q1) the length of the ribbon cable that will give maximum power
transfer into the 50 ohm load
Q2) the SWR
assume the operating frequency is 27 MHz and the ribbon cable
phase velocity is 2x10^8 m/s

Describe the difference between demand and quantity demand

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 5 minutes ago

asked 6 minutes ago

asked 6 minutes ago

asked 6 minutes ago

asked 6 minutes ago

asked 8 minutes ago

asked 10 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 14 minutes ago

asked 16 minutes ago