Wavelength and frequency - Study guides, Class notes & Summaries
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Milady esthetics exit exam 2023 with 100% correct answers
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What is a characteristic of an ideal disinfectant 
Strips for checking effectiveness 
 
 
 
What is a characteristic of a short wavelength 
Penetrates less 
 
 
 
What form of decontamination is not recommended for use in salons or spas 
Dry heat 
 
 
 
What type of fungus affects plants or grows on inanimate object's but does not cause human infections in the salon 
Mildew 
 
 
 
Sign of HPV or plantar warts 
Clusters of small black dots on the bottom of the foot 
 
 
 
What is not a benefit o...
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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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LMRT Assessment Tests | 150 Questions with 100% Correct Answers | Verified | 20 Pages
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What type of current is required for proper operation of the x-ray tube? - Direct 
Electromagnetic radiation travels: - In waves along a straight path 
Frequency is defined as: - The number of waves passing a point per unit time 
Wavelength is defined as the distance from: - Peak to peak of the wave 
Wavelength and frequency are: - Inversely proportional to each other 
The x-ray beam changes as it travels through the patient by a process called: - Attenuation 
The intensity of radiation is inver...
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PHYS 1260 Exam 3 DeWitt Version 1 Questions and Answers.
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PHYS 1260 Exam 3 DeWitt Version 1 Questions and Answers. 
Select ONE answer for each numbered problem. If you choose more than one on the Scantron sheet, you 
will be marked incorrect on that problem. 
Data Rate=(Number of Channels)x(samples/second)x(bits/sample) 
Capacity=(Number of Channels)x(Bandwidth/Channel)xlog2(SNR+1) 
SNR = Signal Power/Noise Power 
AM = Amplitude Modulation 
FM = Frequency Modulation 
PM = Phase Modulation 
FET = Field Effect Transistor 
RAM = Random Access Memory 
Capa...
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BNSF Telecom 1 Exam Questions with Correct Answers
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BNSF Telecom 1 Exam Questions with Correct Answers 
VHF - Low and High range 
Very High Frequency - Answer-Low is 30 to 50 MHz High is 150 to 300 MHz 
 
UHF - Ultra High Frequency - Answer-300 MHz - 3 GHz 
 
Super High Frequency - SHF - Answer-3-30 GHz 
 
Extremely High Frequency - EHF - Answer-30-300 GHz 
 
Legacy Band - Answer-25 kHz wide channel 
 
Very Narrowband - Answer-6.25 kHz wide, digital 
Narrowband - Answer-12.5 kHz wide analog 
What is dB and how much power is it - Answer-dB is a de...
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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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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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Physics AS Level AQA 2024 Updated Exam
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Physics AS Level AQA 2024 Updated Exam 
 
Acceleration - ANSWER- change in V per unit t 
 
Accurate - ANSWER- Measurement obtained using calibrated instruments correctly 
 
Alpha radiation - ANSWER- Particle consisting of 2 P's and 2 N's 
 
Amplitude - ANSWER- Max displacement of oscillating particle from equilibrium position 
 
Annihilation - ANSWER- Particle and antiparticle meet, destroy eachother and emit radiation 
 
Antibaryon - ANSWER- Hadron w/ 3 quarks 
 
Antimatter - ANSWER- Antipart...
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CETA Study Guide Questions With All Complete Solutions
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CETA Study Guide Questions With All Complete Solutions 
 
 
8.33 meters is the full wavelength in air for what RF frequency? - ANSWER- 36 MHz 
 
Decimal 164 would appear as what in binary? - ANSWER- 
 
A resistor has color stripes yellow, violet, violet, silver. It is? - ANSWER- 470 MegOhm +/- 10% 
 
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when connected in series? - ANSWER- 25 pf 
 
What is the ripple frequency of a full wave single phase bridge rectif...
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MMSC407 Exam 1 Questions with All Correct Answers
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MMSC407 Exam 1 Questions with All 
Correct Answers 
 
what type of light a Tungsden (Quartz-Vapor) exciter lamp shows us - Answer-visible 
light 
what type of light a Hydrogen/ Deuterium exciter lamp shows us - Answer-UV light 
what type of light a Xenon/MercuryVapor exciter lamp shows us - Answer-UV light 
visible light range - Answer-350-700 nm 
color absorbed at 350-430 nm - Answer-violet 
color absorbed at 430-475 nm - Answer-blue 
color absorbed at 475-495 nm - Answer-blue-green 
color abso...
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