Propagation speed - Study guides, Class notes & Summaries
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ARDMS SPI EXAM 500 |Q & A |ALREADY GRADED A+ |2024 UPDATE
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ARDMS SPI STUDY GUIDE (Ultrasound Physics Certification 
Test Study |QUESTIONS & ANSWERS |VERIFIED & 
UPDATED | 2024 
In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) 
will... - Answer Remain the Same because stiffness and density affect Propagation 
Speed. 
What is the audible range? - Answer 20-20,000Hz 
>20,000Hz=Ultrasound 
Frequency is measured in - Answer Hertz (Hz) 
is 
Cycles per Second 
Not affected by sonographer 
Increase Frequency; Decrease Depth ...
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SPI ARDMS EXAM |Q & A |ALREADY GRADED A+ |2024 UPDATE
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SPI ARDMS EXAM |Q & A |ALREADY 
GRADED A+ |2024 UPDATE 
What type of wave is sound? Correct Ans ~ mechanical and longitudinal 
The frequency ranges for ultrasound are: Correct Ans ~ >20 kHz 
The speed of sound in soft tissue is: Correct Ans ~ 1540 m/s 
which of the following transducers fires the elements in groups? 
A. Linear sequenced array 
B. Phased array 
C. Continuous-wave transducer 
D. Single-element transducer Correct Ans ~ A 
Enhancement is caused by** Correct Ans ~ weakly attenuati...
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Test Bank For Dental Radiography Principles and Techniques 6th Edition, Joen Iannucci, Laura Howerton Complete Guide Version 2023.
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Test Bank For Dental Radiography Principles and Techniques 6th Edition, Joen Iannucci, Laura Howerton Complete Guide Version 2023. 
 Radiation Physics 
Iannucci: Dental Radiography, 6th Edition 
MULTIPLE CHOICE 
1. The fundamental unit of matter is the 
a. proton. 
b. neutron. 
c. electron. 
d. atom. 
ANS: D 
A proton is a subatomic particle; the fundamental unit of matter is the atom. A neutron is 
a subatomic particle; the fundamental unit of matter is the atom. An electron is a 
subatomic par...
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ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED
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ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED 
In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Remain the Same because stiffness and density affect Propagation Speed. 
What is the audible range? 20-20,000Hz 
>20,000Hz=Ultrasound 
Frequency is measured in Hertz (Hz) is Cycles per Second 
Not affected by sonographer 
Increase Frequency; Decrease Depth 
A period is the length of time it takes for one complete wavelength to pass a fixed poin...
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SPI PRACTICE QUESTIONS 2023/2024
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SPI PRACTICE QUESTIONS 2023/2024 
 
Sound waves are: - ANSWER-longitudinal, mechanical 
 
The speed of sound in soft tissue is closest to: - ANSWER-1,500 m/s 
 
The frequency closest to the lower limit of ultrasound is: - ANSWER-15,000 Hz 
 
Which is not an acoustic variable? - ANSWER-intensity 
 
The effects of soft tissue on ultrasound are called: - ANSWER-acoustic propagation properties 
 
All of the following are true EXCEPT: - ANSWER-two waves with identical frequencies must interfere const...
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Edelmen's SPI Exam Review Test Answered 100% Correctly!
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Edelman SPI review questions & Answers 2023. 
______ is the distance covered by one cycle. 
a) pulse length 
b) wavelength 
c) cycle distance 
d) cycle duration 
 
______ is the time to complete one cycle 
a) pulse duration 
b) pulse period 
c) period 
d) duration period 
 
________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: 
a) refraction 
b) Rayleigh Scattering 
c) scattering 
d) reflection 
 
_________ resolution is...
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AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2022 *JUN227404201* IB/M/Jun22/E7 7404/2 For Examiner’s Use Question Mark 1
- Exam (elaborations) • 63 pages • 2023
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AQA 
AS 
CHEMISTRY 
7404/2 
Paper 2 Organic and Physical Chemistry 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E7 7404/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
Section B 
TOTAL 
Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
• the Periodic Table/Data Sheet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions...
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SPI Board Exam Review (GB) 2023/2024. (GB) 600+ Complete QUESTIONS &ASWERS (100% Verified & Graded A+)|COMPLETE GUIDE|
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SPI Board Exam Review (GB) 2023/2024. (GB) 600+ Complete QUESTIONS &ASWERS (100% Verified & Graded A+)|COMPLETE GUIDE| 
	is the reciprocal of period. A. inverse period 
B.	PRP 
C.	frequency 
D.	propagation speed - C. Frequency 
 
A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How many flowers remain? 
A.	27 
B.	0 
C.	10 
D. 15 - C. 10 
 
A byte is composed of	bits. A word is composed of	bytes. A. 2, 2 
B. 8, 2 
C. 16, 16 
D. 8, 16 - B. 8, 2 
(a string of eight b...
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Progression: Construction Coordinator I - II Exam Answered Correctly.
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Progression: Construction Coordinator I - II Exam Answered Correctly. 
 
A chain trencher 
 
A return path sweep-and-alignment system is used to adjust which of the following? 
 
Anomalies, such as echoes and blind spots, can hide cable faults or cause a technician to misinterpret the signature of a time domain reflectometer (TDR) waveform. What causes an echo on a waveform TDR? 
 
As the RF signal travels on the coaxial cable, one portion of the signal may be attenuated more than the others. ...
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ETA Fiber Optics Certification Exam Questions and Answers
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ETA Fiber Optics Certification Exam Questions and Answers 
Light is electromagnetic energy with a _________ frequency and a ________ wavelength compared to radio waves. - ANSWER Higher, Shorter 
 
What type of light is used in Fiber Optic Transmissions - ANSWER Infrared or IR 
 
What are the four items needed for a Fiber Optic System to work? - ANSWER Transmitter, Fiber Cable, Receiver, Connectors 
 
1mW is the same as what in dBM? - ANSWER 0 or absolute power 
 
...
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