physics topical question
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PHYSIC FORM 5TRANSCRIPT
clensity of water= 1000 kg m-;
mark
plaslic container
Figure 3.262. The thistle funnel is immersed vertically into
water until h = 10.0 cm.3. The difference in water Jevel in the manometer, i,
is recorded.4. The thistle funnel is taken out and washed.5. Procedures 2 and 3 are repeated by inrmersing
the thistle f unnel in alcohol (density = 800 kg m-3)and giycerin (density = 1 300 kg m-.).
3.2.3 Applications of Pressllre in LiquidsConstrucrion of a Heservcrir1. Figure 3.28 sholvs resen oirs of tr.i'o different shapes.
The stn-rcture in Figure 3.28(b) is better because thewall of the base of the resenoir is thicker and canu'ithstand a greater pressure of rvater $4$tr,
(a) Thin wall
Figure 3"28
The tr-ocation of a Water Tank
A Eraph of / against p is plotted
llcm
plkgm-3Figure 3.27
,' canclusion '
The graph of l against p shows that the pressure tn a ,.
llquld is directly proportional to the density of ihe :
liquid. Tne hypotnesis is accepled.
2. Therefore, water can llow out fast fiom the pipeto consumers located at lower grounds.
Transfusion of Glucsse Solutions in thet'lospital1. In the hospital, a drip is set up by suspending a
bottle of liqurid at a high level. The liquid flows fromthe bottle thror-rgh a tube into the patient's vein.
2. Liquicl pressure causes the liquid to flow into thebodv
Figure 3.30
Formation of a Water Fountain
water
--A- nozzle
6?essidfs
Iype otliquirl
Alcohol
Water
Glycerin
Density,
/kg m-3
800
1 000
Dlfference invrater level, //cm
Figure 3.29
.\ u,aier rarrk is placed at. a hi_ch\\,aLer pressLrre p;-ociuceci at thepipe is irigh.
level so thatlowe-r end oi
lhethe
140
bottle suspended athigher level
Figure 3.31