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the best book is hc verma!
it is bible of physics
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ok
i admit i may be wrong!!!
but the menace wee and aforadi were upto was not at all appreciable!
i hope u understand.
such acts not only destroy the image of their own but everyone who is included.
if its really not u.........................
i apologize for my comments!!!
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vinky
results r already out
ha ha ha
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Sir
when we use a rocket to go out of earth's gravitational field is the energy conserved.
as the rocket goes up potential energy increases.
but when out of earth's gravitational field g becomes 0 hence potential energy becomes 0
so where has the work diminished which was used to lift the rocket
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Venturi meter - Orifice meter Comparison
- The orifice plate can easily be changed to accomodate widely different flow rates, whereas the throat diameter of a venturi is fixed, so that its range of flow rates is circumscribed by the practical limits of Dp.
- The orifice meter has a large permanent loss of pressure because of the presence of eddies on the downstream side of the orifice-plate; the shape of the venturi meter prevents the formation os these eddies and greatly reduces the permanent loss.
- The orifice is cheap and easy to install. The venturi meter is expensive, as it must be carefully proportioned and fabricated. A home made orifice is often entirely satisfactory, whereas a venturi meter is practically always purchased from an instrument dealer.
- On the other hand, the head lost in the orifice for the same conditions as in the venturi is many times greater. The power lost is proportionally greater, and, when an orifice is inserted in a line carrying fluid continuously over long periods of time, the cost of the power may be out of all proportion to the saving in first cost. Orifices are therefore best used for testing purposes or other cases where the power lost is not a factor, as in steam lines.
- However, in spite of considerations of power loss, orifices are widely used, partly because of their greater flexibility, because installing a new orifice plate with a different opening is a simpler matter. The venturi meter can not be so altered. Venturi meters are used only for permanent installations.
- It should be noted that for a given pipe diameter and a given diameter of orifice opening or venturi throat, the reading of the venturi meter for a given velocity is to the reading of the orifice as (0.61/0.98)2, or 1:2.58.(i.e. orifice meter will show higher manometer reading for a given velocity than venturi meter).
source: msubbu.com
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yaar these cranks are spoiling all the status of this site.
i think only one account shud be permitted per ip
it will surely reduce the menace
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if there is no wind there is no friction. yup that is true.
so therer is no fw and fs.
but mg and N sitll balance each other and system remains in equilibrium.
if there is wind and no friction then body will move towards fw.
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yaar the charge inside the cavity induces equal and opp. charge on the inside surface of the conductor.
this also leads to separation of +ve charges which due to repulsion from charge inside cavity resides on outer surface.
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yaar the situation is as in figure.
all the forces r shown
Fw is force due to wind.
Fs is static frictional force
mg is wt. of body
N is normal reaction by ground
all the forces r in equilibrium hence body does not move
rate me if crrect
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gilchrist........
coz he is better
fire or water
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guys
coz they rock
palmtop or laptop
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excellent work punterjack
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yup amangem is ryt
but u still deserve some points
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 India
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yaar in my view the buoyant force acting on metal cube decreases pressure at pt. of contact.
but the fluid itself exerts pressure at bottom.
so this pressure compensates the loss of pressure due to buoyancy.
and the pressure remains same.
but i m not 100% sure.
pls rate if u think i m crrect
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the answer is c
as equal volumes r poured and base area is same the ht occupied by liquid in 3rd vessel will be max. as pressure is rho.g.h so 3rd vessel will have highest pressure due to greatest ht.
4 ur doubt the pressure is itself due to density which is related with weight.
i mean to say that pressure is indirectly caused due to weight.
so force at the bottom will be due to both!
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Vriti Edustore
