Home
Class 11
PHYSICS
If a unit vector is represented by 0.5 h...

If a unit vector is represented by `0.5 hat(i) + 0.8 hat(j) + c hat(k)` , then the value of `c` is

A

`sqrt (0.01)`

B

`sqrt (0.11)`

C

1

D

`sqrt (0..39)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Motion in a Plane

    SL ARORA|Exercise Example|111 Videos

  • MECHANICS

    SL ARORA|Exercise Exercise|341 Videos

  • MOTION IN ONE DIMENSION

    SL ARORA|Exercise problems for self practice|66 Videos

Similar Questions

Explore conceptually related problems

If a unit vector is represented by 0.5 hat(i)-0.8 hat(j)+chat(k) , then the value of 'c' is :-

A unit vector is represented as (0.8hat(i)+bhat(j)+04hat(k)) . Hence, the value of b must be

A unit vector is represented as (0.8hat(i)+bhat(j)+0.4hat(k)) . Hence the value of 'b' must be

0.4 hat(i)+0.8 hat(j) + c hat(k) represents a unit vector when c is :

A unit vector is represented by a hat I + b hat j +chatk If the value of a and b are 0.6 and 0.8 respectively find the value of c

0.4hat(i)+0.8hat(j)+chat(k) represents a unit vector, when c is :-

If a vector 2 hat i + 3 hat j + 8 hat k is perpendicular to the vector 4 hat j - 4 hat i + alpha hat k , then the value of alpha is

If vector hat(i) - 3hat(j) + 5hat(k) and hat(i) - 3 hat(j) - a hat(k) are equal vectors, then the value of a is :

If vectors hat(i) - 3hat(j) + 5hat(k) and hat(i) - 3hat(j) - a hat(k) are equal vectors, then the value of a is :

Find a unit vector perpendicular to the vectors hat(j) + 2 hat(k) & hat(i) + hat(j)

SL ARORA-Motion in a Plane-Excercise
  1. A car is travelling with linear velocity v on a circular road of radiu...

    Text Solution

    |

  2. Two vectors are given by A=3hati+hatj+3hatk and B=3hati+5hatj-2hatk. F...

    Text Solution

    |

  3. A projectile is given an initial velocity of (hat(i)+2hat(j)) The Car...

    Text Solution

    |

  4. A particle is projected from the ground with an initial speed of v at ...

    Text Solution

    |

  5. Assertion: Two balls of different masses are thrown vertically upward ...

    Text Solution

    |

  6. Assertion : In javelin throw, the athlete throws the projectile at a...

    Text Solution

    |

  7. Assertion : Generally the path of a projectile from the earth is parab...

    Text Solution

    |

  8. Statement (I):The projectile has only vertical component of velocity a...

    Text Solution

    |

  9. In the following questions, a statement of assertion is followed by a...

    Text Solution

    |

  10. In the following questions, a statement of assertion is followed by a...

    Text Solution

    |

  11. Assertion: If dot product and cross product of vec(A) and vec(B) are z...

    Text Solution

    |

  12. Six vectors, vect a through vect f have the magnitudes and directions ...

    Text Solution

    |

  13. If |vec A+ vec B| = |vec A| + |vec B |, then angle between A and B w...

    Text Solution

    |

  14. A bus is moving on a straight road towards north with a uniform speed ...

    Text Solution

    |

  15. If a unit vector is represented by 0.5 hat(i) + 0.8 hat(j) + c hat(k) ...

    Text Solution

    |

  16. The angle between the two vectors vec A= 3 hat i + 4 hat j + 5 hat k a...

    Text Solution

    |

  17. If a vector 2 hat i + 3 hat j + 8 hat k is perpendicular to the vector...

    Text Solution

    |

  18. The magnitudes of vectors vec A, vec B and vec C are 3, 4 and 5 units ...

    Text Solution

    |

  19. The vectors vec A and vec B are such that |vec A + vec B | = |vec A - ...

    Text Solution

    |

  20. The vector sum of two forces is perpendicular to their vector differen...

    Text Solution

    |