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State the first law of thermodynamics ....

State the first law of thermodynamics .

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R G PUBLICATION-MODEL QUESTION PAPER 3-EXERCISE
  1. State and prove Newton's law of cooling.

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  2. 27 identical drops of water are falling down vertically in air with a ...

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  3. A liquid cools from 60℃ to 40℃ in 10 minute what is the temperature of...

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  4. A solid floats in water with frac(3)(4)^th of its volume below the sur...

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  5. Show that work done by a stretching force in producing an extension in...

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  6. 75 g of water at 100^@ C is added to 20 g of ice at -15^@C. Calculate ...

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  7. Prove that the pressure exerted by an ideal gas given by P=1/3 rhov^2.

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  8. Show that the molar volume of an ideal gas at STP is 22.4 litres. Give...

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  9. What is meant by degree of freedom?

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  10. Calculate rms velocity of an oxygen molecule at 27^@C, atomic weight o...

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  11. A SHM is represented by y(t) =5 sin(20t+0.5) m where t is in S. What i...

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  12. Find the expression of time period of a simple pendulum of length l.

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  13. A particle of mass 10 g executing SHM has a velocity of 6cm s^(-1)afte...

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  14. Write down Newton's formula for velocity of sound and state the laplac...

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  15. At what temperature will the velocity of sound in air be double than ...

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  16. What is the fundamental frequency at 20^@C of an open pipe of length 1...

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  17. State the first law of thermodynamics .

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  18. Find the pressure required to compress a gas adiabatically at atmosphe...

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  19. Explain the operations of a Canot heat engine working between two temp...

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  20. Calculate the efficiency of a Canot engine operating between 450 K and...

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