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![[Post New]](/templates/default/images/icon_minipost_new.gif) 26 Nov 2007 20:14:27 IST
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HC VERMA VOL1,pg275,28
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26 Nov 2007 21:08:25 IST
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simple..
a)given rate of discharge = 1cc
v1 = rate of discharge/a1 = 1/(4*10^-2) = 100/4 = 25cm/s
b)use eq of continuity
a1v1 = a2v2
1 = 2 *(10^-2) *v2 as a1v1 = rate of discharge
v2 = 100/2 = 50cm/s
c)use bernoulli eq
Pa + (dv1^2)*1/2 = Pb + (dv2^2)*1/2
Pa - Pb = 1/2*d*(v2^2-v1^2)
= 0.5*1000*(2500 - 625)*10^-4
= 93.75N
rate if useful.....
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30 Nov 2007 09:06:54 IST
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Approach suggested should work
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The Scientist does not study nature because it is useful; he studies it because he delights in it, & he delights in it because it is beautiful. If nature were not beautiful, it would not be worth knowing, life would not be worth living. Ofcourse I do not here speak of that beauty that strikes the senses, the beauty of qualities & appearances; not that I undervalue such beauty, far from it, but it has nothing to do with science; I mean that profounder beauty which comes from the harmoniuos order of the parts, & which a pure intelligence can grasp. |
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