# The Naked Scientists Forum

### Author Topic: need equation help  (Read 2601 times)

#### jezza

• Jr. Member
• Posts: 36
##### 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=mCÄè 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 = ëA ((è2 - è1)/X) i dont know if i have to rearange this, but i have to find ë (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, J·kg-1·K-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 »

#### jezza

• Jr. Member
• Posts: 36
##### 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

#### Soul Surfer

• Neilep Level Member
• Posts: 3345
• keep banging the rocks together
##### 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!

#### jezza

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

oh yea and this Ä, is delta

#### The Naked Scientists Forum

##### Re: need equation help
« Reply #4 on: 20/05/2006 17:56:04 »