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The mean velocity of raindrops is 20 m c...

The mean velocity of raindrops is `20 m cdot s^(-1)` . When these drops fall on the ground, what will be the increase in temperature? Assume that 50% of the heat produced is absorbed by the water.

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The correct Answer is:
`0.0238^(@)C`
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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Problem Set - II (Marks 3 or 4)
  1. A lead bullet hits a target at a velocity of 300 m cdot s^(-1). If it ...

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  2. Earth gains energy from the sun at a rate of 8.4 J cdot cm^(-2) cdot "...

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  3. The mean velocity of raindrops is 20 m cdot s^(-1) . When these drops ...

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  4. A hole is made in a piece of iron of mass 200 g with the help of a 186...

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  5. The speed of a 50 kg heavenly object reduces from 30 km cdot "min"^(-1...

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  6. Sea water is splattered horizontally from a jet at a speed of 10 m cdo...

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  7. Find out the minimum height from which a piece of ice at 0^(@)C should...

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  8. A lead bullet melts on hitting a fixed target. What will be the minimu...

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  9. A certain volume of a gas expands at one standard atmosphere pressure ...

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  10. The volume of 1 mol of a gas is doubled when it expands isothermally a...

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  11. 70 cal of heat is required to increase the temperature of 2 mol of an ...

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  12. What will be the change in internal energy of 128 g of oxygen gas at c...

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  13. What will be the increase in temperature if dry air at 27^(@)C is comp...

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  14. The tyre of a motorcar bursts suddenly when air was being pumped in it...

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  15. Calculate the amount of work done, if 20 g of hydrogen gas is compress...

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  16. Some amount of gas at 27^(@)C is suddenly compressed to 27 times its ...

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  17. In an adiabatic process where pressure is increased by 2/3%, if (Cp)/(...

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  18. The volume of air increases by 2% in its adiabatic expansion. Calculat...

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  19. Air at 27^(@)C and 128 atm pressure is filled in a container in resear...

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  20. Equal volume of mono atomic and diatomic gases of same initial tempera...

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