100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
SPI Exam Questions pool ( Answered) rated A+. CA$11.86   Add to cart
Quickly navigate to
Preview
  2.  
  3. SPI
  4.  
  5. SPI
  6.  
  7. SPI

Exam (elaborations)

SPI Exam Questions pool ( Answered) rated A+.

 3 views  0 purchase
  • Institution
  • SPI

SPI Exam Questions pool ( Answered) rated A+. Concentration of force in an area. Units are: (Pa) or Pascals. - Pressure What are the units for density? - kg/cm3 What are the seven acoustic parameters and what are they determined by? - -Period determined by SOURCE -Frequency determined ...

[Show more]

Preview 3 out of 19  pages

Document information

  • February 3, 2023
  • 19
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

  • spi exam questions pool answered rated a concentration of force in an area units are pa or pascals pressure what are the units for density kgcm3 what are the seven acoustic parame

Written for

All documents for this subject (246)

Seller

avatar-seller
QuickPass

Reviews received

Content preview

SPI Exam Questions pool ( Answered)
rated A+.


Concentration of force in an area. Units are: (Pa) or Pascals. - ✔✔Pressure



What are the units for density? - ✔✔kg/cm3



What are the seven acoustic parameters and what are they determined by? - ✔✔-Period determined by
SOURCE

-Frequency determined by SOURCE

-Amplitude determined by SOURCE

-Power determined by SOURCE

-Intensity determined by SOURCE

-Wavelength determined by both SOURCE & MEDIUM

-Propagation Speed determined by MEDIUM



What is the frequency of audible sound? - ✔✔20Hz to 20 kHz



The frequency of Ultrasound is greater than? - ✔✔20kHz



What is the speed of sound in soft tissue?

List the propagation speed of different media from slowest to fastest.

*As a general rule sound travels fastest in solids, slower in liquids, and slowest in gases. -
✔✔Air>Fat>Soft Tissue (1,540 m/s)>Blood>Muscle>Bone



10^-6 is the exponent what is the prefix? What is the exponent and prefix that corresponds on the
opposite side of the metric system? - ✔✔The prefix is MICRO often meaning millionth.

,10^6, the prefix is MEGA often meaning million.



10^-9 is the exponent what is the prefix? - ✔✔The prefix is NANO often meaning billionth.

*smallest



10^-3 is the exponent what is the prefix?What is the exponent and prefix that corresponds on the
opposite side of the metric system? - ✔✔The prefix is milli often meaning thousandth.



10^3, the pefix is KILO often meaning thousand.



Peak to Peak Amplitude - ✔✔It is the difference between maximum and minimum values of an acoustic
variable. Therefore, peak-to-peak amplitude is twice the value of the amplitude.



Amplitude is the the "bigness" of the wave. It is also the difference between the maximum value and the
average or undisturbed value of an acoustic variable. What are the units? - ✔✔Pressure --Pa

Density -- g/cm^3

Particle motion --cm, in, any distance



Amplitude is the the "bigness" of the wave. It is also the difference between the maximum value and the
average or undisturbed value of an acoustic variable. What are the units? - ✔✔Watts/ cm2



What are the units for Power? - ✔✔WATTS



Is Power adjustable? - ✔✔Yes, there is a control on the ultrasound system that allows the sonographer
to alter the initial power.



How are Power and Amplitude related? - ✔✔Both amplitude and power are parameters that describe
the size, or magnitude, of a wave. When power increases so does amplitude.

power is proportional to the wave's amplitude squared.

, A sonographer has increased the amplitude of a wave by 4. How has the power changed? - ✔✔4x4=8

or

4^2=8

The power has increased 8 fold.



A sonographer has increased the amplitude of a wave by 4. How has the power changed? - ✔✔4x4=16

or

4^2=16

The power has increased 8 fold.



What is the relationship between intensity and amplitude? - ✔✔If a wave's amplitude is doubled, the
intensity is increased to four times its original value.



What are Power and Intensity both related to? - ✔✔AMPLITUDE^2



Two characteristics that affect the speed of sound - ✔✔Stiffness and Density



Stiffness and its relationship to Speed - ✔✔Stiffness and Speed are directly related.



Density and its relationship to Speed - ✔✔Density and Speed are inversely related.



*Materials that are not stiff and very dense will have the slowest speed.

Ex: Air has an exceedingly low stiffness. Therefore sound travels slowly in air.



Can wavelength and propagation speed be adjusted by the sonographer? - ✔✔No

*Speed changes only when the wave travels from one medium to a different medium.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller QuickPass. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$11.86. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79789 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$11.86
  • (0)
  Add to cart