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Which materials can be used asthermal in...

Which materials can be used asthermal insulates and why?

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  • Unit Test 1

    CHETANA PUBLICATION|Exercise EXERCISE|18 Videos

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CHETANA PUBLICATION-Unit Test 2-EXERCISE
  1. Show that vectors vec a = 2 hat i + 5 hat j + 6 hat k and vec b = hat ...

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  2. If the motion of an object is described by x = f(t). Write formula for...

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  3. Justify the statement, "Work and energy are the two sides of a coin.''

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  4. Calculate the speed of a satellite in an orbit at a height of 1000 km ...

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  5. State any four methods to reduce friction

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  6. Which materials can be used asthermal insulates and why?

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  7. How is a thermometer calibrated?

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  8. A rubber band originally 30 cm. long is stretched to a length of 32cm ...

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  9. Why does an astronaut in an orbiting satellite have a feeling of weigh...

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  10. Four uniform solid cubes of edges 10 cm, 20 cm, 30 cm and 40 cm are ke...

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  11. In Ohm's experiments, the values of the unknown resistances were found...

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  12. State any six properties of scalar product.

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  13. Show that the path of a projectile is a parabola

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  14. Discuss the variation of acceleration due to gravity with altitude.

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  15. What is the stress in a wire which is 50 meter long and 0.01cm2 in cro...

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  16. The thermal conductivity of steel is 0.026 k cal//ms K. Find the tempe...

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  17. Define Sublimation and Triple point. In a random temperature scale X, ...

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  18. Derive an expression for strain energy per unit volume of the material...

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  19. Derive an expression for critical velocity of satellite. Calculate the...

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  20. State and prove the law of conservation of linear momentum.

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