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What is position vector?...

What is position vector?

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A and B are two points. The position vector of A is 6b-2a. A point P divides the line AB in the ratio 1:2. if a-b is the position vector of P, then the position vector of B is given by

L and M are two points with position vectors 2vec(a)-vec(b)andvec(a)+2vec(b) , respectively. The position vector of the pont N which divides the line segment LM in the ratio 2:1 externally is

The vector equation of the plane perpendicular to the vector 3hati-2hatj+3hatk and passing through a pont having position vector hati+hatj+2hatk is

The vector eqution of the plane passing through a point having position vector hati-hatj+hatk and parallel to the vectors 2hati+hatj+hatk" and " hatj+2hatk is

If vec F is the force acting in a particle having position vector vec r and vec tau be the torque of this force about the origin, then

Two bodies of mass 1 kg and 3 kg have position vectors hat i+ 2 hat j + hat k and - 3 hat i- 2 hat j+ hat k , respectively. The centre of mass of this system has a position vector.

CHETANA PUBLICATION-SEMICONDUCTORS-EXERCISE
  1. Define uniform circular motion.

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  2. Write the formula for coefficient of linear expansion of a solid.

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  3. What is position vector?

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  4. Define Dimensional formula for any physical quantity.

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  5. Define one Coulomb.

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  6. Show that the path of a projectile is a parabola

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  7. Derive dimensions for power.

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  8. As I was standing on a weighing machine inside a lift it recorded 50 k...

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  9. State any four characteristics of vector product of vectors.

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  10. A metal cube of side lm is subjected to a force. The force acts normal...

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  11. At what temperature will the speed of sound in air be 2 times its spee...

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  12. Derive an expression for couple acting on an electric dipole kept in a...

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  13. Define temperature coefficient of resistivity. State its S.I unit.

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  14. Explain term : Convection.

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  15. Two satellites A and B are revolving round a planet. Their periods of ...

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  16. A convex lens held some distance above a 10cm long pencil produces its...

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  17. Explain the N-type semicondutors.

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  18. Obtain an expression for binding energy of a satellite revolving in a ...

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  19. If vec A = 2 hat i + 2 hat j - hat k and vec B = hat i + 4 hat j- 3 ha...

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  20. Explain forward biasing in P-N junction diode with diagram.

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