Home
Class 11
PHYSICS
Two bodies, each having a mass of 3kg, c...

Two bodies, each having a mass of 3kg, collide with each other. One body was at rest and the other was moving with a `4 m cdot s^(-1)` velocity. After collision they combine with each other. Find out the heat produced as a result of this collision. Mechanical equivalent of heat = `4.2 J cdot cal^(-1)`.

Text Solution

Verified by Experts

The correct Answer is:
2.86 cal
Promotional Banner

Topper's Solved these Questions

  • FIRST AND SECOND LAW OF THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise Entrance Corner - Assertion-reason type|4 Videos

  • FIRST AND SECOND LAW OF THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise Entrance Corner - Multiple correct answer type|1 Videos

  • FIRST AND SECOND LAW OF THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise Exercise - Problem Set - II (Marks 3 or 4)|33 Videos

  • EXPANSION OF SOLIDS AND LIQUIDS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|2 Videos

  • FRICTION

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|7 Videos

Similar Questions

Explore conceptually related problems

The mechanical equivalent of heat is 4.2 xx 10^(7) erg cdot cal^(-1) . What does it mean?

A car of mass 2000 kg collides with a truck of mass 10^(4) kg moving at 48 km cdot h^(-1) . After collision the car rides up the truck and the truck-car combination moves at 15 km cdot h^(-1) . What was the velocity of the car before collision?

Find out the amount of work done to convert 100 g ice at 0^(@)C to water at 100^(@)C . (Latent heat of fusion of ice = 80 cal cdot g^(-1) , mechanical equivalent of heat = 4.2 J cdot cal^(-1)) .

A car of mass 2000 kg collides with a truck of mass 10^4 kg moving at 48 km*h^(-1) . After collision, the car rides up the truck and the truck-car combination moves at 15 km *h^(-1) . What was the velocity of the car before collision ?

Two fully elastic objects of same mass is moving in same direction aiong straight line & collide with each other. Show that that they change velocity due to collision.

Two particles of equal mass moving towards each other with velocities 20 m*s^(-1) and 30 m*s^(-1) collide. If the collision is elastic, find their velocities after the collision.

Two bodies of masses 1 kg and 0.5 kg move towards each other with velocities 10 cm *s^(-1) and 5 cm *s^(-1) respectively . After collision, the bodies coalesce (join together). Find the common velocity after collision and the loss in kinetic energy.

Two bodies are moving such that the velocity of one is twice that of the other and they make an angle of 60^@ with each other. Find the relative velocity of one with respect to the other.

A body of mass m is moving along x-axis with a velocity V, and another body of mass M is moving along y-axis with a velocity v. After collision they coalesce. (ii) Find the fraction of initial kinetic energy transferred to heat energy, after collision.

CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Hots Numerical Problems (Marks 3/4/5)
  1. Two bodies, each having a mass of 3kg, collide with each other. One bo...

    Text Solution

    |

  2. If the temperature of a piece of aluminium increased by 1^(@)C, what w...

    Text Solution

    |

  3. 10^(18) electrons hit a target per second in a X-ray tube with a veloc...

    Text Solution

    |

  4. 1 kg coal is burnt to produce 10000 cal of heat. A tank 10 m high is f...

    Text Solution

    |

  5. The rotational speed of a wheel of diameter 8.4 cm is 4 rps. When a st...

    Text Solution

    |

  6. The diameter of a hose pipe is 2 cm. 1m^(3) of water discharged from t...

    Text Solution

    |

  7. A block having mass of 2 kg is pulled over a horizontal surface at a c...

    Text Solution

    |

  8. 1 kg oil is taken in a copper calorimeter having mass 100 g. This oil ...

    Text Solution

    |

  9. The initial temperature of a lead bullet (specific heat 0.02 cal cdot ...

    Text Solution

    |

  10. A block of ice having mass 6 kg is pulled 50 m horizontally over a sur...

    Text Solution

    |

  11. What will be the change in internal energy of 5g of oxygen, if its tem...

    Text Solution

    |

  12. Two cylinders A and B of equal capacity are connected to each other vi...

    Text Solution

    |

  13. Two cylinders A and B of equal capacity are connected to each other vi...

    Text Solution

    |

  14. Two cylinders A and B of equal capacity are connected to each other vi...

    Text Solution

    |

  15. Two cylinders A and B of equal capacity are connected to each other vi...

    Text Solution

    |

  16. The temperature of 10 g nitrogen gas is increased from 20^(@)C to 120^...

    Text Solution

    |

  17. The temperature of 10 g nitrogen gas is increased from 20^(@)C to 120^...

    Text Solution

    |

  18. Some amount of gas is compressed at STP in an (i) adiabatic process. W...

    Text Solution

    |

  19. Some amount of gas is compressed at STP in an (ii) isothermal process ...

    Text Solution

    |

  20. The initial volume of a gas is 2m^(3). When the gas is compressed adia...

    Text Solution

    |