Home
Class 11
PHYSICS
A 50 gm lead bullet (sp. Heat 0.020 cal/...

`A 50` gm lead bullet `(sp. Heat 0.020 cal//g)` is initially at `30^(@)C` . It is fired vertically upward with a speed `84 m//s` On returning to the starting level, it strikes a slab of ice at `0^(@)C` . `(Axx100)` mg of ice is melted. Find the value of `'A'`.

Text Solution

Verified by Experts

`(1)/(2)mv^(2)+mCDeltaT=Deltam_(ice)L_(ice)`
`42cal+30cal=Deltam_(ice.)80cal//gm`
`Deltam_(ice)=(72)/(80)approx0.9gm approx 900mg`
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    NARAYNA|Exercise LEVEL - II (H.W.)|19 Videos

  • TRANSMISSION OF HEAT

    NARAYNA|Exercise LEVEL-II(C.W)|27 Videos

Similar Questions

Explore conceptually related problems

A 50 g lead bullet (specific heat 0.02 ) is initially at 30^(@)C . It is fired vertically upward with a speed of 840 ms^(-1) . On returning to the starting level it strikes a cake of ice at 0^(@)C . How much ice is melted ? Assume that all energy is spent in melting only. Latent heat of ice =336 j g^(-1) .

At 30^(@) C, a lead bullet of 50 g, is fired verticaly upwards with a speed of 840 m/s. The specific heat of leasd is 0.02 cal/ g^(@) C. On returning to the starting level, it strikes to a cake of ice at 0^(@) C. Calcualte the amount of ice melted (Assume all the energy is spent in melting only)

The entropy change in melting 1g of ice at 0^@C . (Latent heat of ice is 80 cal g^(-1) )

If m is the minimum amount of steam of 100^(@)C required to melt 12 gm ice completely, then find the value of 10cm.

If steam of mass 100g and temperature 100^(@)C is released on an ice slab of temperature 0^(@)C , how much ice will melt ?

Heat absorbed when 1g of ice melts at 0^(@)C to form 1g of water at the same temperature is …………cal.

A heater coil rated at 1000 W s connected to a 110 V mains. How much time will take to melt 625 gm of ice at 0^(@)C . (for ice L=80(Cal)/(gm) )

A bullet of mass 20 g leaves a riffle at an initial speed 100 m/s and strikes a target at the same level with speed 50 m/s. The amount of work done by the resistance of air will be

NARAYNA-THERMODYNAMICS-Exercise
  1. A mercury barometer is defective. When an accurate barometer reads 770...

    Text Solution

    |

  2. A mercury barometer is defective. When an accurate barometer reads 770...

    Text Solution

    |

  3. A 50 gm lead bullet (sp. Heat 0.020 cal//g) is initially at 30^(@)C . ...

    Text Solution

    |

  4. An ideal gas (Cp / Cv = gamma) is taken through a process in which the...

    Text Solution

    |

  5. A Vessel contains helium, which expands at constant pressure when 15 k...

    Text Solution

    |

  6. When a quantity of liquid bismuth at its melting point is transferred ...

    Text Solution

    |

  7. Figure shows the variation of internal energy (U) with the pressure (P...

    Text Solution

    |

  8. The heat absorbed by a system in going through the cyclic process show...

    Text Solution

    |

  9. 1//R(R"is universal gas constant") moles of an ideal gas (gamma=1.5) u...

    Text Solution

    |

  10. A metal rod AB of length 10x has its one end A in ice at 0^@C, and the...

    Text Solution

    |

  11. An ideal diatomic gas under goes a process in which its internal ener...

    Text Solution

    |

  12. An ideal gas is taken through a cyclic thermodynamic process through f...

    Text Solution

    |

  13. A piece of ice (heat capacity =2100 J kg^(-1) .^(@)C^(-1) and latent h...

    Text Solution

    |

  14. A diatomic ideal gas is compressed adiabatically to 1/32 of its initia...

    Text Solution

    |

  15. When a system is taken from state i to state f alone the path iaf, it ...

    Text Solution

    |

  16. Two moles of helium gas undergo a cyclic process as shown in Fig. Assu...

    Text Solution

    |

  17. In a insulated vessel, 0.05 kg steam at 373 K and 0.45 kg of ice at 25...

    Text Solution

    |

  18. An ice cube of mass 0.1 kg at 0^@C is placed in an isolated container ...

    Text Solution

    |

  19. A diatomic gas is enclosed in a vessel fitted with massless movable pi...

    Text Solution

    |

  20. Two moles of an ideal monoatomic gas is taken through a cycle ABCA as ...

    Text Solution

    |