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How is an iron ship able to float where ...

How is an iron ship able to float where as an iron needle sinks?

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JBD PUBLICATION-Mock test paper 1-EXERCISE
  1. It is easier to balance a bicycle in motion. Why?

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  2. Prove that g = GM/R^2 , where M is mass and R is radius of earth.

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  3. How is an iron ship able to float where as an iron needle sinks?

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  4. When a projectile os projected at an angle with the horizontal, find t...

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  5. A body travels 200 m in 2 seconds and 220 m in the next 4 seconds. Wha...

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  6. What do you mean by banking of road?

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  7. Show that Lenz's law obeys the law of conservation of energy.

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  8. Define escape velocty. Obtain an expression for the escape velocity of...

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  9. Surface tension depends on

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  10. Find the amount of heat required to convert 1g ice at 0^@ C into steam...

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  11. What is heat engine,write its essential parts?Write its working and fi...

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  12. Deduce the expression for work done in an isothermal process.

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  13. What is the nature of the sound waves?

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  14. What are statiionary waves?State their characteristics.

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  15. Fill in the Blanks Rotation of earth around its own axis is .............

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

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  17. State Hooke's law.

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  18. State Newton's law of cooling.

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  19. Define specific heat.

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  20. Define stress and strain. What are the units in which these quantities...

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