need equation help

  • 4 Replies
  • 2624 Views

0 Members and 1 Guest are viewing this topic.

*

Offline jezza

  • Jr. Member
  • **
  • 36
    • View Profile
need equation help
« on: 18/05/2006 13:24:50 »
ok so i have to find the specific heat capacity of a metal.
the question says: draw a graph of time vs temp (which i have done) and from the equation E=mC calcuatle the specific heat capacity? and ideas?

the second part is i have to calculate the thermal conductivity of a metal rod using this formaular:  Q/t = A ((2 - 1)/X) i dont know if i have to rearange this, but i have to find (thermal conductivity) i think x is length of rod, theta1 - theta2 is the temp difference, A is the cross sectional area...sooo any ideas, im truly stumped
 

*

ROBERT

  • Guest
Re: need equation help
« Reply #1 on: 18/05/2006 14:12:01 »
" The specific heat capacity (the symbol c or s, also called specific heat or SHC) of a substance is defined as heat capacity per unit mass. The SI unit for specific heat capacity is the joule per kilogram kelvin, Jkg-1K-1, which is the amount of energy required to raise the temperature of one kilogram of the substance by one kelvin. Heat capacity can be measured by using calorimetry."
http://en.wikipedia.org/wiki/Specific_heat_capacity

I hope this info is not for your "heated bicycle seat" , Jezza [:)].

« Last Edit: 18/05/2006 14:15:29 by ROBERT »

*

Offline jezza

  • Jr. Member
  • **
  • 36
    • View Profile
Re: need equation help
« Reply #2 on: 18/05/2006 17:11:15 »
quote:
Originally posted by ROBERT


I hope this info is not for your "heated bicycle seat" , Jezza [:)].



haha no, but that helps a bit thanks
 

*

Offline Soul Surfer

  • Neilep Level Member
  • ******
  • 3345
  • keep banging the rocks together
    • View Profile
    • ian kimber's web workspace
Re: need equation help
« Reply #3 on: 20/05/2006 14:53:07 »
Jezza you have missed out a lot of important details of your experiment and I do not immediately recognise all the symbols used in your equation.  You need to give a lot more detail before it is possible to answer your questions fully.

Learn, create, test and tell
evolution rules in all things
God says so!
Learn, create, test and tell
evolution rules in all things
God says so!

*

Offline jezza

  • Jr. Member
  • **
  • 36
    • View Profile
Re: need equation help
« Reply #4 on: 20/05/2006 17:56:04 »
yea it wasnt like that when i did it, umm is meant to be theta, and this , is lambda

oh yea and this , is delta