sign up I login
 advanced
refer a friend - earn nickels!!

Ask & Discuss Questions with Community & Experts

 Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board experts Expert Question: Thermodynamics
Forum Index -> Thermal Physics like the article? email it to a friend.  
Author Message
[Post New]4 Mar 2007 20:13:13 IST
    Subject: Thermodynamics
[Up] View Post
prashant3670 (0)

New kid on the Block

Olaaa!! Perrrfect answer. 0  [0 rates]
prashant3670's Avatar
total posts: 12    
offline Offline
Q. A square loop of side length L is to be consirdered. Point A & C are maintained at temperatute T1 & T2 respectively. The rate of heat flow was observed to be 30X. Now, the reservoir by which the temp at C was maintained is now shifted to point D. Find the new rate of heat flow, if its value is KX, then find the value of (K+5)*(K+5)-18?
    
[Post New]4 Mar 2007 20:53:45 IST
    Subject: Re:Thermodynamics
[Up] View Post
magiclko (4210)

Forum Expert Moderator

Olaaa!! Perrrfect answer. 746  bad job dude!! I dont approve of this answer! 2  [990 rates]
magiclko's Avatar
total posts: 1941    
offline Offline
we knw the rate of heat flow is given by I = KA(T2-T1)/L
here L/KA can be considered as resistance of the rods.... we'll denote it by R
so now when temperature is maintained across A and C, we have an equivalent resistance of value R, across A and C....
thrfore 30X= (T2-T1)/R
now when it is maintained between A and D, we have an equivalent resistance of 3R/4
thrfore KX =4(T2-T1)/3R
now u can easily calculate the value of K and find the value of the required expression.......

Manasi....
NIT-Allahabad...

............................................................
Challenges are High, Dreams r New..
The World out thr is waiting for U !!
Dare to dream, Dare to Try..
No Goal is distant, no Star is too high !!!
 this reply: 2 points  (with 0 Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
You have to be logged on to rate
  
[Post New]9 Mar 2007 20:57:55 IST
    Subject: Re:Thermodynamics
[Up] View Post
bhupesh (723)

Forum Expert Moderator

Olaaa!! Perrrfect answer. 117  [186 rates]
bhupesh's Avatar
total posts: 938    
offline Offline
dear
   The solution provided in the post is correct for further clarification let me know
Bhupesh.M
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Thermal Physics
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya