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A piece of lead is dropped to the ground...

A piece of lead is dropped to the ground from a height of 200 m. What will be the increase in its temperature? Specific heat of lead = `0.03 cal cdot g^(-1) cdot^(@)C^(-1), J = 4.2 xx 10^(7) erg cdot cal^(-1)`

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The correct Answer is:
`15.5^(@)C`
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A block having mass of 2 kg is pulled over a horizontal surface at a constant velocity of 20 km cdot h^(-1) . If the frictional coefficient is 0.5, calculate the amount of heat produced in 1 h. If 50% of the heat produced i absorbed by block, what will be the increase in its temperature? Specific heat of the body = 0.1 cal cdot g^(-1) cdot^(@)C^(-1) .

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If a lead bullet hits a wall, its temperature rises by 200^(@)C . What is the speed of the bullet if the heat so produced remains completely in the bullet? Specific heat of lead = 0.03 cal cdot g^(-1) cdot^(@)C^(-1) .

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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Problem Set - I (Marks 2)
  1. A 150 cm long glass tube, closed at both ends, is filled with leads ma...

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  2. If a lead bullet hits a wall, its temperature rises by 200^(@)C. What ...

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  3. What is the amount of work done to convert 40 g of ice at -10^(@)C int...

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  4. Water is falling from a waterfall on a non-conducting surface. If the ...

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  5. The height of a waterfall is 200 m. What will be the difference in tem...

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  6. A piece of lead is dropped to the ground from a height of 200 m. What ...

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  7. A body of mass 1 kg falls to the ground from a height of 1km. If the e...

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  8. A lead bullet stopped on hitting an iron plate at a velocity of 300 m ...

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  9. What will be the change in internal energy if 10 g of air is heated fr...

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  10. For an ideal gas, gamma = 1.4. Find out the two molar specific heats o...

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  11. Consider a Carnot cycle operating between T(1) = 500 K and T(2) = 300 ...

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  12. If coefficient of performance of a refrigerator is 5 and it operates a...

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  13. What amount of heat is to be supplied to 14 g of nitrogen in order to ...

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  14. A geyser heats water flowing at the rate of 3.0 litres per minute from...

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  15. What amount of heat must be supplied to 2.0 xx 10^(-2) kg of nitrogen ...

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  16. After detonation of an atom the ball of fire consisting of a spherical...

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  17. A sample of 100 gm of water is slowly heated from 27^(@)C to 87^(@)C. ...

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  18. Find the internal energy of air in a room of volume 40 m^(3) at 1 stan...

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