Exam (elaborations)

ARDMS- SPI Exam 2022/2023 with complete solutions

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Course
ARDMS- SPI

Institution
ARDMS- SPI

Book
Introduction to Electrodynamics

The horizontal axis, or x-axis - ANSWER Runs side to side The vertical axis, or y-axis - ANSWER Runs up and down Unrelated - ANSWER Two items that are not associated Related or Proportional - ANSWER Two items that are associated or affiliated However, the relationship between the items d...

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Uploaded on July 7, 2022
Number of pages 35
Written in 2021/2022
Type Exam (elaborations)
Contains Questions & answers

ardms spi
the horizontal axis
or x axis
the vertical axis
or y axis
unrelated
related or proportional
ardms spi exam 20222023 with complete solutions
directly related or directly proportional

Book Title:Introduction to Electrodynamics

Author(s):David J. Griffiths, Michael P. Soroka

Edition:Unknown
ISBN:9781108420419
Edition:4

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ARDMS- SPI
The horizontal axis, or x-axis - ANSWER Runs side to side

The vertical axis, or y-axis - ANSWER Runs up and down

Unrelated - ANSWER Two items that are not associated

Related or Proportional - ANSWER Two items that are associated or affiliated
However, the relationship between the items does not have to be specified

Directly related or Directly proportional - ANSWER Two items that are associated such
that when one item increases, the other increases

Inversely related or inversely proportional - ANSWER Two items are associated such
that when one item increases, the other decreases

Reciprocal Relationship - ANSWER When two numbers with a reciprocal relationship
are multiplied together, the result is one
Reciprocal numbers are inverse because when one increases, the other decreases

For a numerical answer to a question to be comprehensive, it requires a - ANSWER
Unit

"Increase by a factor" means - ANSWER To multiply by that number

"Decrease by a factor" means - ANSWER To divide by that number

Scientific or engineering notation is a shorthand manner to represent what types of
numbers? - ANSWER Very large or very small numbers

A number in scientific notation form with a positive exponent has a value - ANSWER
Greater than 10

A number in scientific notation form with an exponent of zero has a value - ANSWER
Between 1 and 10

A number in scientific notation form with a negative exponent has a value - ANSWER
Less than 1

10⌃9 - ANSWER Prefix: giga
Symbol: G
Meaning: billion

10⌃6 - ANSWER Prefix: mega
Symbol: M
Meaning: million

,ARDMS- SPI
10⌃3 - ANSWER Prefix: kilo
Symbol: k
Meaning: thousand

10⌃2 - ANSWER Prefix: hecto
Symbol: h
Meaning: hundred

10⌃1 - ANSWER Prefix: deca
Symbol: da
Meaning: ten

10⌃-1 - ANSWER Prefix: deci
Symbol: d
Meaning: tenth

10⌃-2 - ANSWER Prefix: centi
Symbol: c
Meaning: hundredth

10⌃-3 - ANSWER Prefix: milli
Symbol: m
Meaning: thousandth

10^-6 - ANSWER Prefix: micro
Symbol: μ
Meaning: millionth

10^-9 - ANSWER Prefix: nano
Symbol: n
Meaning: billionth

List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci - ANSWER micro, milli, deci, deca, hecto, mega

List all these metric terms in decreasing order:
A. nano
B. canti
C. giga
D. kilo
E. hecto

,ARDMS- SPI
F. micro - ANSWER giga, kilo,hecto, centi, micro, nano

Sound pulses travel through biologic tissue, or ______. - ANSWER Media

All waves carry _____ from one location to another. - ANSWER Energy

Sound is a __________ wave in which particles in the medium move. - ANSWER
Mechanical

Sound cannot travel through a ______; it must travel through a ______. - ANSWER
Vacuum, medium

What does compressed mean? - ANSWER Squeezed together

What does rarefied mean? - ANSWER Stretched apart

Sound travels in a ________ line. - ANSWER Straight

Sound waves are ____________ waves. - ANSWER Longitudinal

What is the propagation speed dependent on? - ANSWER The medium

Are there any biologic effects on tissue? - ANSWER No

Sound waves are identified by - ANSWER Oscillations in acoustic variables

What are the three acoustic variables? (With their units) - ANSWER pressure - pascals
(Pa), density - kg/cm^3, distance - cm, mm

If something other than pressure, density, or distance (particle motion) rhythmically
oscillates in a wave, then the wave... - ANSWER Is not a sound wave

Sound waves are also known as - ANSWER Acoustic waves

What are the seven Acoustic Parameters? - ANSWER Period, frequency, amplitude,
power, intensity, wavelength, propagation speed

Particles move in a direction that is perpendicular to the direction that the wave
propagates in what wave? - ANSWER Transverse wave

Particles move in the same direction that the wave propagates in a ____________
wave. - ANSWER Longitudinal

When are a pair of waves considered in-phase? - ANSWER When their peaks and
troughs occur at the same time and at the same location
Considered "in step"

, ARDMS- SPI
What happens when two waves are out-of-phase? - ANSWER Their peaks occur at
different times, and so do their troughs
"out of step"

What is interference? - ANSWER When more than one beam travels in a medium and
arrive at the same location at exactly the same time
These waves lose their individual characteristics and combine to form a single wave

The interference of in-phase waves results in a single wave of _________ amplitude.
This is called ___________. - ANSWER Greater, constructive interference
(Larger Wave)

The interference of a pair of out-of-phase waves results in the formation of a single
wave of _____ amplitude. This combination is called _____________________. -
ANSWER Lesser, destructive interference
(Smaller Wave)

When frequencies of waves differ, what kind of wave occurs? - ANSWER Both
constructive and destructive interference

What do waves transfer from one location to another? - ANSWER Energy

Two waves are traveling in a medium and arrive at a location at the same time. What
event takes place? - ANSWER Interference

Which types of waves will exhibit both constructive and destructive interference? -
ANSWER Waves of different frequency

What units are used to report the pressure of a sound beam? - ANSWER Pascals, Pa

What describes features of a sound wave? - ANSWER Parameters

What is the source of a sound wave? - ANSWER The ultrasound system and the
transducer

Some parameters are determined by the tissue through which the sound is traveling,
also called a __________. - ANSWER Medium

What is period? And what is it determined by? - ANSWER The time it takes a wave to
vibrate a single cycle, or the time from start of a cycle to the start of the next cycle
It is determined by the source

What is frequency? And what is it determined by? - ANSWER The number of cycles
that occurs in one second
Determined by the sound source only

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