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IF barP + barQ = barR and P=Q = (R )...

IF ` barP + barQ = barR and P=Q = (R )/(sqrt(2))` then find the angles between the pairs of vectors `( barP , barQ ) , ( barQ,barR) and ( barR, barP)` respectively

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`90^@ ,45^@ ,45^@ `
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AAKASH SERIES-ELEMENTS OF VECTORS-NUMERICAL EXXERCISE (LEVEL -2)
  1. For two vectors, the magnitude of their sum is equal to the magnitude...

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  2. A force ( 2hati + 3 hatj - hatk) newtons acts on a particle ...

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  3. A body of mass 10 kg is suspended by a string and is pulled a side wit...

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  4. A man is travelling at 10.8 kmph in a topless car on a rainy day. He h...

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  5. A body starts with a velocity 2 hati +3hatj +11 hatk m/s and moves wi...

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  6. Three vectors of magnitude 3,6 and 6 units are acting along the sides ...

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  7. Two vectors one of small magnitude and the other of large magnitude ar...

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  8. A vector makes angle with X,Y and Z axes that are in the ratio 1:2:1 r...

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  9. The components of a particles velocity in the directions at right angl...

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  10. Two vectors vecP and vecQ are having their magnitudes in the ratio s...

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  11. A vector makes angles alpha , beta and gamma with the X, Y and Z axe...

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  12. At a given instant of time two particles are having the position vecto...

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  13. IF barP + barQ = barR and P=Q = (R )/(sqrt(2)) then find the a...

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  14. the sum of the magnitude of two farces acting at a point is ...

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  15. Two particles 1 and 2 move with constant velocities barV(1) and barV2...

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  16. A boat travels between two points and B on the banks of a river along ...

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  17. A boat moves perpendicular to the bank with a velocity of 7.2 km ph. T...

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  18. An aeroplane is flying with a velocity 800kmph relative to air wind is...

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  19. A swimmer is capable of swimming at 1.65ms- in still water. If he swim...

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  20. A boat moves relative to water with a velocity which is n times less t...

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