Home » Ask & Discuss » Physics. » Thermal Physics « Back to Discussion

Thermal Physics

Blazing goIITian

Joined:	5 Dec 2007
Post:	704

12 May 2008 13:41:23 IST

0 People liked this

447

dare to do diis

None

each moleculeof a gas f degrees of freedom d ratio C_p/C_v= $\gamma$ fr d gas is [ans :1+2/f]

equal masses of 3liquids ABC have temperatures 10⁰c, 25⁰c & 40⁰c respectively if A&B r mixed d mixture has a temperature of 15⁰C if B& C r mixed d mixture has a temperature of 30⁰C if A&C r mixed d mixture will have a temperature of

Share this article on:

Comments (5)

Bill Gates JR...Don't believe it?..don't ask!!

Scorching goIITian

Joined: 16 Apr 2008

Posts: 213

12 May 2008 13:58:28 IST

Like 1 people liked this

Since MC₁(15-10)=MC₂(25-15)=>C₁/C₂=2

MC₂(30-25)=MC₃(40-30)=>C₂/C₃=2

MC₁(T-10)=MC₃(40-T)=

4(T-10)=40-T 4T-40=40-T 5T=80 OR T=16⁰C.

SUNDEEP ALLAMRAJU

Blazing goIITian

Joined: 28 Feb 2008

Posts: 1014

12 May 2008 15:44:46 IST

Like 1 people liked this

I think if the degrees of freedom are f,then C_v=fR/2 and C_p=fR/2+R.

So,C_p/C_v=f+2/2=1+2/f.

dont u know me

Blazing goIITian

Joined: 5 Dec 2007

Posts: 704

14 May 2008 20:59:08 IST

Like 0 people liked this

d difficulty in d 1st sum is i dont know wat is known as degrees of freedom can ne 1 explain it

Mahesh Jain

Blazing goIITian

Joined: 5 Sep 2007

Posts: 654

14 May 2008 21:02:27 IST

Like 1 people liked this

degrees of freedom are the type of motion a molecule can exibit.They r vibration,roational etc.

Manotapa Bhaumik

Cool goIITian

Joined: 14 Apr 2008

Posts: 55

16 May 2008 13:12:21 IST

Like 1 people liked this

Degrees of freedom are ways in which a gas molecule can store its kinetic energy, they r rotational, translational and vibrational

Maxwell's equipartition law says that all gas molecules distribute their KE equaly in all degrees of freedom,

E.g: for a monoatomic gas , f=3 coz of translational in X, Y, and Z dirns.

for diatomic, f=5 coz it will have two rotationals also,

Vibrational will be neglected at this stage,since it is considered only at high temp, but it is given by 6n-4

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team