Test bank for Mosby's Respiratory Care Equipment 10th Edition by J.M. Cairo (ISBN-13: 9780323416368)all 15 chapters complete

TESTBANK r




Mosby's Respiratory Care Equipment 1
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0th Edition by J. M. Cairo ISBN-
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13 9780323416368
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TESTBANK r

,
,Chapter 01: Basic Physics for the Respiratory Therapist
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MULTIPLErCHOICE

1. Powerrisrarmeasurerofrwhichrofrtherfollowing?
a. Mechanicalrenergy
b. Gravitationalrpotentialrenergy
c. Therrateratrwhichrworkrisrbeingrperformed
d. Therrateratrwhichratomsrandrmoleculesrmove
ANS:r C
Powerrisrarmeasurerofrtherrateratrwhichrworkrisrbeingrperformed.rTherformularPr=rW/J,rwhererWr=r
wattsrandr1rwattrisrequalrtor1rJ/s,rexpressesrthis.rJoulesrarertherinternationalrstandardrforrexpressin
grenergyrandrwork.

PTS:r r 1 REF:r r Pager8

2. Whenreffortrproducesrarchangerinrtherpositionrofrmatter:
a. workrisrperformed.
b. itrisrknownrasrarjoule.
c. mechanicalrpowerrisrcreated.
d. therlawrofrtherconservationrofrenergyrisrbeingrused.
ANS:r A
Workrisrperformedronlyrwhenreffortrorroutsiderforcesrproducerarchangerinrtherpositionrofrmatter.

PTS:r r 1 REF:r r Pager8

3. Therunitrusedrtorexpressrtherforcerofr1rnewtonr(N)ractingronrar1-
kilogramr(kg)robjectrtormoveritr1rmeterr(m)risrwhichrofrtherfollowing?
a. Watt c. Kilowatt
b. Joule d.r r Kineticrenergy
ANS:r B
Onerjoulerisrequalrtortherforcerofr1rNractingronr1rkg.rArwattrisrequivalentrtor1rJ/s.rArkilowattrisrsimplyr10
00rW.rKineticrenergyrisrenergyranrobjectrpossessesrwhenritrisrinrmotion.

PTS:r r 1 REF:r r Pager8

4. Powerrisrexpressedrinrwhichrofrtherfollowingrunits?
a. Newtons c. Ohms
b. Joules d.r r Watts
ANS:r D
Powerrisrarmeasurerofrtherrateratrwhichrworkrisrbeingrperformed.rEnergyrandrworkrarermeasuredrin
rjoules.rOnerjoulerisrtherforcerofr1rNractingronrar1-

kgrobjectrtormoveritr1rm.rOhmsrisrtherresistanceranrelectricalrcircuitrpossesses.

PTS:r r 1 REF:r r Pager8

, 5. Fourrhorsepowerr(hp)risrequalrtorhowrmanyrkilowattsr(kW)?
a. 5.36 c. 2984
b. 2.98 d.r r 186.5
ANS:r B
1rhpr=r0.746rkW.
1rhp/0.746r=r4rhp/X.
Xr=r4r r0.476r=r2.98rkW.

PTS:r r 1 REF:r r Pager8

6. Therenergyrthatranrobjectrpossessesrwhenritrisrinrmotionrisrcalled:
a. sound. c. thermal.
b. kinetic. d.r r potential.
ANS:r B
Kineticrenergyrisrtherenergyranrobjectrpossessesrwhenritrstaysrinrmotion.rPotentialrenergyrisrstoredr
energy,randritrexistsrinrmanyrformsrsuchrasrthermalrenergyrorrsoundrwaves.

PTS:r r 1 REF:r r Pager9

7. Ifrthervelocityrofranrobjectrisrreducedrbyrhalf,ritsrkineticrenergyrwillrberwhichrofrtherfollo
wing?
a. Reducedrtoronereighth c. Reducedrtwofold
b. Increasedrtwofold d.r r Notrchanged
ANS:r A
Kineticrenergyr=r (massrofrobjectr rsquarerofrvelocityritrisrtraveling,rorrmv2)rorrKEr=r (Vr
V).rIfrthervelocityrisrreducedrbyrhalf,rthenrKEr=r ( Vr r V),rorr ( )r=r r reduction.
r




PTS:r r 1 REF:r r Pager10

8. Energyrthatrisrstoredrinranrobjectrisrcalledrwhichrofrtherfollowing?
a. Kinetic c. Chemical
b. Potential d.r r Mechanical
ANS:r B
Energyrthatrisrstoredrorrpossessedrbyranrobjectrbecauserofritsrpositionrisrcalledrpotentialrenergy.rM
echanicalrenergyrcanrberdividedrintoreitherrkineticrenergyrorrpotentialrenergy.rChemicalrpotentialr
energyroftenrrefersrtortherbondsrinrpetroleumroilsrthat,rifrbroken,rcanrberconvertedrtorkineticrenergy
.

PTS:r r 1 REF:r r Pager10

9. Therpotentialrenergyrofrarcompressedrspringrisrknownrasrwhichrofrtherfollowing?
a. Gravitational c. Inelastic
b. Chemical d.r r Elastic
ANS:r D