Home
Class 12
PHYSICS
A force of 7hati + 6hatk newton makes a ...

A force of `7hati + 6hatk` newton makes a body move on a rough plane with a velocity of `3 hatj +4 hatk ms^(-1)`. Calculate the power in watt.

A

24

B

34

C

21

D

45

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 26

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 28

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A forc of 7hati + 6hatk newton makes a body move on a rough plane with a velocity of 3 hatj +4 hatk ms^(-1) . Calculate the power in watt.

A force of 7 hati+ 6 hatk newton makes a body move on a rough plane with a velocity of 3 hatj + 4 hatk ms^-1 . Calculate the power in watt.

A force of 6 hat i+ 7 hat j newton makes a body move on a rough loane with a velocity of (4 hat j = 3 hat k) ms^(-1) . Calculate the power in watt.

A force of (5hati+6hatj) N makes a body to move on a rough surface with a velocity of (4hatj-2hatk) m/s. What is the power?

Under a force of 10 hati - 3 hatj +6 hatk newton, a body of mass 5 kg is displaced from the position 6 hati + 5 hatj - 3 hatk to the position 10 hati - 2hatj + 7 hatk . Calculate the work done.

A force of 2 hati + 3 hatj + 4 hatk N acts on a body for 4 second and producesa displacement of (3 hati + 4 hatj + 5 hatk)m . The power used is

NTA MOCK TESTS-NTA NEET SET 27-PHYSICS
  1. A block of mass m is placed on a rough horizontal floor and it is pull...

    Text Solution

    |

  2. Three charges are placed at the vertex of an equilateral triangle as s...

    Text Solution

    |

  3. A force of 7hati + 6hatk newton makes a body move on a rough plane wit...

    Text Solution

    |

  4. Two bodies of 6kg and 4kg masses have their velocity 5hati - 2 hat j +...

    Text Solution

    |

  5. Which of the following statements is FALSE for a paricle moving in a...

    Text Solution

    |

  6. A satellite of mass m revolves around the earth of radius R at a hight...

    Text Solution

    |

  7. The time period of a satellite of earth is 5 hours. If the separation ...

    Text Solution

    |

  8. A particle moves such that its acceleration a is given by a = -bx , wh...

    Text Solution

    |

  9. A wooden block performs SHM on a frictionaless surface with frequency,...

    Text Solution

    |

  10. The velocity of kerosene oil in a horizontal pipe is 5 m//s. If g = 10...

    Text Solution

    |

  11. The terminal velocity V of a spherical ball of lead of radius R fallin...

    Text Solution

    |

  12. 10 Two particles of masses m(1) and m(2) initially at rest start movi...

    Text Solution

    |

  13. Angular momentum is conserved

    Text Solution

    |

  14. How many different wavelengths may be observed in the spectrum form a ...

    Text Solution

    |

  15. As an electron makes a transition from an excited state to the ground ...

    Text Solution

    |

  16. When the nucleus of .^(238)U(92) disintegrates to give one nuclues of ...

    Text Solution

    |

  17. In a photoelectric effect , the K.E. of electrons emitted from the met...

    Text Solution

    |

  18. A simple pendulum is suspended from the ceilling of a left. When the l...

    Text Solution

    |

  19. The difference in the variation of resistance with temperature in a me...

    Text Solution

    |

  20. A photon of light enters a block of glass after travelling through vac...

    Text Solution

    |