Home
Class 11
PHYSICS
Water flows along the horizontal pipe of...

Water flows along the horizontal pipe of which the cross-section is not uniform. The pressure is `30 mm`. Of Hg where the velocity is `0.20 ms^(-1)`. Find the pressure at a point where the velocity is `1.20 ms^(-1)`.

Text Solution

Verified by Experts

Here, `P_(1)=30mm` of Hg `=3.0 cm` of Hg
`=3.0xx13.6xx980 dyn e//cm^(2) , rho_(1)=13.6 g//c.c.`
`v_(1)=0.20 ms^(-1)=20 cm s^(-1)`,
`P_(1)=? , v_(2)=1.20 ms^(-1)=120 cm s^(-1)` ,
`P_(1)+(1)/(2) rho v_(1)^(2)=P_(2)+(1)/(2)rho v_(2)^(2)`
Piting the value find `P_(2)`, Which will the be `32984`
`dyn e//sq cm =(32984)/(13.6xx980)=2.48` cm of Hg
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions-II|14 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions-I|173 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Fill in the Blanks E|10 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Competiton Focus Jee Medical Entrance|18 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos

Similar Questions

Explore conceptually related problems

Water flows along horizontal pipe whose cross-section is not constant. The pressure is 1 cm of Hg, where the veloecity is 35 cm/s . At a point where the velocity is 65cm/s then pressure will be

Water is flowing through a horizontal pipe of varying cross-section. If the pressure of water equals 2 cm of Hg where velocity of flow is 32 cms^(-1) , what is the pressure at another point where the velocity of flow is 40 cms^(-1) ?

Knowledge Check

  • Water flows steadily through a horizontal pipe of a variable cross-section. If the pressure of water is p at a point where the velocity of flow is v, what is the pressure at another point where the velocity of flow is 2v, rho being the density of water?

    A
    `p + 2 rho v^2`
    B
    `p - 2 rho v^2`
    C
    `p + 3/2 rho v^2`
    D
    `p - 3/2 rho v^2`

  • Water flows steadily through a horizontal pipe of a variable cross-section. If the pressure of the water is p at a point , where the speed of the flow is v. What is the pressure at another point , where the speed of the flow is 2 v ? Let the density of water be 1 g cm ^(-3) .

    A
    `p+(3/2)rhov^2`
    B
    `p-2rhov^2`
    C
    `p - 3rhov^2`
    D
    `p- (3/2) rhov^2`

  • A horizontal pipe of non uniform cross section has water flow through it such that the velocity is 2ms^(-1) at a point where the pressure 40 kpa. The pressure at a point where the velocity of water flow is 3ms^(-1) is (in kilopascal)

    A
    27
    B
    60
    C
    37.5
    D
    40

    • Similar Questions

    Explore conceptually related problems

    It water flows horizontally through a pipe of varying cross section and the pressure of water equals 10 cm of g at a point where the velocity of flow is 40 cm//s , what is the pressure at another point where the velocity of flow is 50 cm//s ?

    Water flows steadily through a horizontal pipe of variable cross-section. If the pressure of water is p at a point where the velocity of flow is v , at another point (pressure p' ), where the velocity of flow in etav : The following statements are given below

    Water flows through a horizontal pipe of varying area of cross section at the rate 15 cubic metre per minute. Find the radius of pipe where water velocity is 3 ms^(-1)

    water enters at one end of a horizontal pipe of non-unifrom cross -section with a velocity of 0.4 ms^(-1) and leaves the other end with a velocity of 0.6 ms^(-1) The pressure of water at the first end is 1500Nm^(-2) Calculate the pressure at the other end Density of water =1000kgm^(-3)

    Water flowing steadily through a horizontal pipe of non-unifrom cross-section. If the pressure of water is 4xx10^(4)N//m^(2) at a point where cross-section is 0.02 m^(2) and velocity of flow is 2 ms^(-1) . The pressure at a point where cross-section reduces to 0.01 m^(2) is 3.4xx10^(n) Pa. What is the value of n ?

    Home
    Profile