Home
Class 12
PHYSICS
A bullet of mas 4.2xx10^(-2)kg moving at...

A bullet of mas `4.2xx10^(-2)kg` moving at a speed of `300 ms^(-1)` gets into a block with a mass 9 times thatt of the bullet. If the block is free to move without any kind of friction, the heat generated in the process will be

A

45 cal

B

405 cal

C

450 cal

D

1701 cal

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2016

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|40 Videos
  • QUESTION PAPER 2018

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|40 Videos

Similar Questions

Explore conceptually related problems

A bullet of mass 4.2 xx10^(-2) kg moving at a speed of 300 m/s, gets stuck into a block with a mass 9 times that of the bullet. If the block is free to move without any kind of friction, the heat generated in the process will be

A bullet of mass m travelling with a speed v hits a block of mass M initially at rest and gets embedded in it. The combined system is free to move and there is no other force acting on the system. The heat generated in the process will be

A bullet of mass 0.04 kg moving with a speed of 90 mcdot s^(-1) enters a heavy wooden block and is stopped after a distance of 60 cm. What is the average resistive force exerted by the block on the bullet?

A bullet of mass 50 g , moving with a velocity of 50 m*s^(-1) hits and enters a wooden block of mass 2kg and comes to rest within it. The wooden block was initially at rest on a smooth table. Find the final velocity of the wooden block. What are the initial and final kinetic energies of the block-bullet system?

A body of mass 10 kg moving with a speed of 2.0 m*s^(-1) on a frictionless table strikes a mounted spring and comes to rest. If the force constant of the spring be 4xx 10^5 N*m^(-1) , then what will be the compression on the spring ?

A bullet of mass 250g , moving with a horizontal velocity of 400 m*s^(-1) , gets embedded in a target. The target of mass 4.75 kg can move freely. Find the loss of kinetic energy due to this collision. What happens to this energy loss ?

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2017-PHYSICS
  1. A charge of 0.8 coulomb is divided into two charges Q(1) and Q(2). The...

    Text Solution

    |

  2. In the magnetic field due to a current in a straight wire segement of ...

    Text Solution

    |

  3. The magnets of two suspended coil galvanometers are of the same streng...

    Text Solution

    |

  4. A proton is moving with a uniform velocity of 10^(6) ms^(-1) along the...

    Text Solution

    |

  5. When the frequency of the AC voltage applied to a series LCR circuit i...

    Text Solution

    |

  6. Six wires. Each of resistancde r. are connected so as to form a tetrah...

    Text Solution

    |

  7. The ratio of the diameter of the sun to the distance between the earth...

    Text Solution

    |

  8. Two monochromatic eoherent light beams A and B have intensities L. and...

    Text Solution

    |

  9. A point object is held above a thin equiconvex lens at its focus. The ...

    Text Solution

    |

  10. A parallel beam of light is incident on a glass prism in the shape of ...

    Text Solution

    |

  11. The de Broglie wavelenght of an electron is 0.4xx10^(-10) m when it ki...

    Text Solution

    |

  12. A unit negative charge with mass M resides at the midpoint of the stra...

    Text Solution

    |

  13. A particle with charge Q coulomb, tied at the end of an inextensible s...

    Text Solution

    |

  14. A bullet of mas 4.2xx10^(-2)kg moving at a speed of 300 ms^(-1) gets ...

    Text Solution

    |

  15. A particle with charge e and mass m. moving along the X-axis with a un...

    Text Solution

    |

  16. Let v(n) and E(a) be the respective speed and energy of an electron in...

    Text Solution

    |

  17. A small steel ball bounces on a steel plate held horizontally. On each...

    Text Solution

    |

  18. If the pressure, temperature and density of an ideal gas are denoted b...

    Text Solution

    |

  19. Two long parallel wiress separated by 0.1 m carry currents of 1 A and ...

    Text Solution

    |

  20. If chi stands for the manetic susceptibility of a substance mu for its...

    Text Solution

    |