Hey there! Sign in to join this conversationNew here? Join for free

equal mass & temperature which penetrates more in wax? Watch

    • Thread Starter
    Offline

    1
    ReputationRep:
    Take cylinders made of aluminium, iron and copper having same mass and same area of cross section. Place them in boiling water. After some time, the temperature of these cylinders will be equal to that of the boiling water. Remove these cylinders at the same temperature from boiling water and place them on plank made of wax Fig (3.12). Which of these cylinders is found to penetrate deepest into the wax? Which of them has penetrated the least? Why?

    thanks in advance.
    Attached Images
     
    • Offline

      9
      Do you know the values for the thermal conductivity of these 3 metals?
      Offline

      0
      ReputationRep:
      It depends on the relative temperatures of the wax and the ambient air at the start of the experiment. If they're the same temperature then I would imagine the wax would absorb more heat as it is using it to melt. So heat would be transferred within the cylinders towards the wax, so the one with the highest conductivity would win. If you did the experiment in a big freezer (without precooling the wax) then it would most likely be the other way round.
     
     
     
  1. See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  2. Poll
    What newspaper do you read/prefer?
  3. See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  4. The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.