Home
Class 12
PHYSICS
An engine pumps water continously throug...

An engine pumps water continously through a hose. Water leave the hose with a velocity `v` and `m` is the mass per unit length of the Water jet. What is the rate at Which kinetic energy is imparted to water?

A

`(1)/(2)m^(2)v^(2)`

B

`(1)/(2)mv^(3)`

C

`mv^(3)`

D

`(1)/(2)mv^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER & ENERGY

    MOTION|Exercise Exercise - 3 Section-B|22 Videos

  • WORK, POWER & ENERGY

    MOTION|Exercise Exercise - 2|30 Videos

  • WAVES

    MOTION|Exercise EXERCISE -4 (Level -II) (previous year JEE Advanced)|10 Videos

Similar Questions

Explore conceptually related problems

An engine pumps water continously through a hole. Peeds with which water pases through the hole nozzle is v and k is the mass per unit length of the water jet as it leaves the nozzle. Find the rate at which kinetic energy is eing imparted to the water.

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 ms^(1) . The mass per unit length of water in the pipe is 100 kgm^(-1) . What is the power of the engine?

An engine pumps liquid of density d continuosly through a pipe of cross-section are A. If the speed with which liquid passes through the pipe is v, then the rate at which kinetic energy is being imparted to the liquid by the pump is

A river of salty water is flowing with a velocity 2m//sec . If the density of water is 1.2 gm//c c , the kinetic energy of each of cubic metre of water is

|f. water is flowing in a pipe with speed 2 m/s then its kinetic energy per unit volume is

Water falls from a height 500 m. what is the rise in temperature of water at bottom if whole energy remains in the water?

MOTION-WORK, POWER & ENERGY -Exercise - 3 Section-A
  1. A vertical spring with force constant k is fixed on a table. A ball of...

    Text Solution

    |

  2. A spherical ball of mass 20kg is stationary at the top of a hill of he...

    Text Solution

    |

  3. An explosion blows a rock into three parts. Two parts go off at right ...

    Text Solution

    |

  4. A block of mass m attached in the lower and vertical spring The spring...

    Text Solution

    |

  5. Two bodies of mass 1 kg and 3kg have position vectors hati+2hatj+hatka...

    Text Solution

    |

  6. An engine pumps water continously through a hose. Water leave the hose...

    Text Solution

    |

  7. A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m...

    Text Solution

    |

  8. A plate of mass m, length b, and breadth a is initially lying on a hor...

    Text Solution

    |

  9. force F on a partical moving in a straight line veries with distance d...

    Text Solution

    |

  10. A body mass M hits normally a rigid wall with velocity v and bounces b...

    Text Solution

    |

  11. A person of mass 60kg is inside a lift of mass 940kg and presses the b...

    Text Solution

    |

  12. The potential energy of a system increased if work is done

    Text Solution

    |

  13. A car of mass m starta from rest and accelerates so that the instyanta...

    Text Solution

    |

  14. A partical of mass m is driven by a machine that deleveres a constant ...

    Text Solution

    |

  15. A block of mass 10 kg, moving in x-direction with a constant speed of ...

    Text Solution

    |

  16. Two spherical bodies of mass M and 5M & radii R & 2R respectively are ...

    Text Solution

    |

  17. Two similar springs P and Q have spring constants K(P) and K(Q)(K(P)gt...

    Text Solution

    |

  18. A body of mass 1 kg begins to move under the action of a time depende...

    Text Solution

    |

  19. Consider a drop of rain water having mass 1 g falling from a height of...

    Text Solution

    |

  20. A body initially rest and sliding along a frictionless trick from a he...

    Text Solution

    |