,
, CHAPTER:1
1. AclosedhemisphericalshellofradiusRisfilledwithfluidatuniformpressurep.gThegnet
gforcegofgthegfluidgongthegcurvedgportiongofgthegshellgisggivengby:
A. 2πR2p
B. πR2p
C. 4πR2p
D. (4/3)πR2p
E. (4/3)πR3p
2. Anairtightbox,havingalidofarea80cm^2,ispartiallyevacuated.Atmosphericgpressu
regisg1.01×10^5gPa.gAgforcegofg600Ngisgrequiredgtogpullgtheglidgoffgthegbox.gThegpr
essuregingthegboxgwas:
A. 2.60×10^4Pa
B. 6.35×10^4Pa
C. 7.50×10^4Pa
D. 1.38×10^5Pa
E. 1.76×10^5Pa
3. Anobjecthangsfromaspringbalance.Thebalanceindicates30Ninairand20Ngwhenth
eobjectgissubmergedinwater.gWhatdoesthebalanceindicatewhenthegobjectgisgsub
mersedgingagliquidgwithgagdensitygthatgisghalfgthatgofgwater?
A. 20N
B. 25N
C. 30N
D. 35N
E. 40N
, 4. Arock,whichweighs1400Ninair,hasanapparentweightof900Nwhensubmergedingfreshw
ater(998kg/m3).Thevolumeoftherockis:
A. 0.14m3
B. 0.60m3
C. 0.90m3
D. 5.1×10−2m3
E. 9.2×10−2m3
5.Abucketrestingonthefloorofanelevatorcontainsanincompressiblefluidofdensitygρ.Whent
heelevatorhasadownwardaccelerationofmagnitudeathepressuregdifferencebetweentw
opointsinafluid,separatedbyaverticaldistance∆h,isgivenby:
A. ρa∆h
B. ρg∆h
C. ρ(g+a)∆h
D. ρ(g−a)∆h
E. ρga∆h
6.Barometersandopen-
tubemanometersaretwoinstrumentsthatareusedtomeasuregpressure.
A. Bothmeasuregaugepressure
B. Bothmeasureabsolutepressure
C. Barometersmeasuregaugepressureandmanometersmeasureabsolutepressure
D. Barometersmeasureabsolutepressureandmanometersmeasuregaugepressure
E. Bothmeasureanaverageoftheabsoluteandgaugepressures
7. Aboatfloatinginfreshwaterdisplaces16,000Nofwater.Howmanynewtonsofgsaltw
atergwoulditdisplaceifitfloatsinsaltwaterofspecificgravityg1.17?
A. 14,500
B. 17,600
C. 16,000
, CHAPTER:1
1. AclosedhemisphericalshellofradiusRisfilledwithfluidatuniformpressurep.gThegnet
gforcegofgthegfluidgongthegcurvedgportiongofgthegshellgisggivengby:
A. 2πR2p
B. πR2p
C. 4πR2p
D. (4/3)πR2p
E. (4/3)πR3p
2. Anairtightbox,havingalidofarea80cm^2,ispartiallyevacuated.Atmosphericgpressu
regisg1.01×10^5gPa.gAgforcegofg600Ngisgrequiredgtogpullgtheglidgoffgthegbox.gThegpr
essuregingthegboxgwas:
A. 2.60×10^4Pa
B. 6.35×10^4Pa
C. 7.50×10^4Pa
D. 1.38×10^5Pa
E. 1.76×10^5Pa
3. Anobjecthangsfromaspringbalance.Thebalanceindicates30Ninairand20Ngwhenth
eobjectgissubmergedinwater.gWhatdoesthebalanceindicatewhenthegobjectgisgsub
mersedgingagliquidgwithgagdensitygthatgisghalfgthatgofgwater?
A. 20N
B. 25N
C. 30N
D. 35N
E. 40N
, 4. Arock,whichweighs1400Ninair,hasanapparentweightof900Nwhensubmergedingfreshw
ater(998kg/m3).Thevolumeoftherockis:
A. 0.14m3
B. 0.60m3
C. 0.90m3
D. 5.1×10−2m3
E. 9.2×10−2m3
5.Abucketrestingonthefloorofanelevatorcontainsanincompressiblefluidofdensitygρ.Whent
heelevatorhasadownwardaccelerationofmagnitudeathepressuregdifferencebetweentw
opointsinafluid,separatedbyaverticaldistance∆h,isgivenby:
A. ρa∆h
B. ρg∆h
C. ρ(g+a)∆h
D. ρ(g−a)∆h
E. ρga∆h
6.Barometersandopen-
tubemanometersaretwoinstrumentsthatareusedtomeasuregpressure.
A. Bothmeasuregaugepressure
B. Bothmeasureabsolutepressure
C. Barometersmeasuregaugepressureandmanometersmeasureabsolutepressure
D. Barometersmeasureabsolutepressureandmanometersmeasuregaugepressure
E. Bothmeasureanaverageoftheabsoluteandgaugepressures
7. Aboatfloatinginfreshwaterdisplaces16,000Nofwater.Howmanynewtonsofgsaltw
atergwoulditdisplaceifitfloatsinsaltwaterofspecificgravityg1.17?
A. 14,500
B. 17,600
C. 16,000
