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The equation (cos p-1) x^(2) + cos p*x +...

The equation `(cos p-1) x^(2) + cos p*x + sin p = 0` where x is a variable, has real roots. Then the interval of possible values of p is

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LAKHMIR SINGH & MANJIT KAUR-FRICTION-EXERCISE
  1. Explain, how the use of oil reduces friction between two surface in co...

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  2. Why are cars, aeroplanes and rockets streamlined ?

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  3. The equation (cos p-1) x^(2) + cos p*x + sin p = 0 where x is a varia...

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  4. What are fluids ?

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  5. Name two common fluids.

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  6. Define friction. What are the facrtors affecting friction ? Explain wi...

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  7. What is the cause of friction ? Explain with the help of labelled diag...

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  8. Give a example to show that friction depends on the nature of two surf...

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  9. What is the difference between static friction and sliding friction ? ...

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  10. How can a very heavy machine be moved conveniently from one place to a...

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  11. What is drag ?

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  12. The coordinates of A and B are

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  13. How can you reduce the drag on something moving through the air ?

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  14. What is meant by 'streamlined shape' ?

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  15. The fast moving vehicles are given streamline shape . Why ?

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  16. A boy runs his toy can on dry marble floor, wet marble floor, newspape...

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  17. Four children were asked to arrange forces due to rolling, static and ...

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  18. A big wooden box is being pushed on the ground from east to west direc...

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  19. A spring balance can be used to measure : A.Mass of an object B.Fo...

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  20. The friction between two surface does not depend on one of the followi...

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