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Under what conditions the work done by a...

Under what conditions the work done by a force will zero, give example of each?

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JBD PUBLICATION-Model Test Paper 15-EXERCISE
  1. Find the rectangular components of a vector R acting in a plane at an ...

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  2. If a running bus stops suddenly, the passengers standing inside it fal...

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  3. Under what conditions the work done by a force will zero, give example...

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  4. Why is it easier to rotate a disc than a ring of the same mass and siz...

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  5. Define gravitational potential and find an expression for it.

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  6. Why bridges are declared unsafe after long use?

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  7. State Polygon law of vector addition and prove it using Triangle law o...

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  8. Why does a cyclist lean to one side while going along a curve? In whic...

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  9. State and prove work energy theorem.

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  10. How much mass of 92 U^235 is converted into energy per day at a nuclea...

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  11. Explain the effect of depth on the value of acceleration due to gravit...

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  12. A mass is divided into two parts so that the force of gravitation betw...

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  13. Define coefficient of viscosity. Give its unit.

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  14. State second law of thermodynamics ?

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  15. Define the molar specific heats fo a gas and find a relation btween th...

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  16. Define simple harmonic motion.

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  17. What is Doppler's effect?Derive a general expression for the apparent ...

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  18. What is beat of sound?

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  19. What are statiionary waves?State their characteristics.

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  20. Define Angle of contact.

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