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State if each of the following statement...

State if each of the following statements is true or false. Give reasons for your answer:- Total energy of a system is always conserved, no matter what internal and external forces on the body are present.

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PSEB-WORK, ENERGY AND POWER-Exercise
  1. Underline the correct alternative :- In an inelastic collision of two ...

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  2. State if each of the following statements is true or false. Give reaso...

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  3. State if each of the following statements is true or false. Give reaso...

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  4. State if each of the following statements is true or false. Give reaso...

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  5. State if each of the following statements is true or false. Give reaso...

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  6. Answer carefully, with reasons :-In an elastic collision of two billia...

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  7. State if each of the following statements is true or false. Give reaso...

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  8. State if each of the following statements is true or false. Give reaso...

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  9. A body is initially at rest. It undergoes one-dimensional motion with ...

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  10. A body is moving unidirectionally under the influence of a source of c...

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  11. A body constrained to move along the z-axis of a coordinate system is ...

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  12. An electron and a proton are detected in a cosmic ray experiment, the ...

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  13. A rain drop of radius 2 mm falls from a height of 500 nr above the gro...

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  14. A molecule in a gas container hits a horizontal wall with speed 200 m ...

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  15. A pump on the ground floor of a building can pump up water to fill a t...

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  16. Two identical ball bearings in contact with each other and resting on ...

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  17. The bob A of a pendulum released from 30^@ to the vertical hits anothe...

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  18. The bob of a pendulum is released from a horizontal position. If the l...

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  19. A trolley of mass 300 kg carrying a sandbag of 25 kg is moving uniform...

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  20. A body of mass 0.5 kg travels in a straight line with velocity v=a x(3...

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