8) a horizontal pipe of 50 cm2 cross-sectional area carries a fluid of unknown density at a speed of 3.0 m/s. this pipe feeds a smaller pipe of cross section 25 cm2 . if the pressure difference between the two sections of pipe is 9000 pa, find the density of the fluid.

fluid density,

Given:

Area of cross section of larger pipe,

Area of cross section of smaller pipe,

Velocity of fluid, = 3.0 m/s[/tex]

Pressure difference, p = 9000 Pa

Solution:

Using Bernoulli's equation:

               (1)

where

= inlet velocity

= velocity at outlet

and = vertical heights

= density of the fluid

and = Pressure

Since, the pipe is horizontal, thus:

=

Thus eqn (1) reduces to :

Now,

           (2)

Also, from the eqn of continuity:

Now, using the value of   in eqn (2) for fluid density:

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.