Little help with thermodynamic question

  • #1
tweety_2479
6
0
the question is in the attachment. All i really want to know is when you have to find the final pressure and temperature do you use the equation

p1 v1^k = p2 v2^k

where k is the the polytrophic index

thanks
 

Attachments

  • Thermo ques.doc
    40.5 KB · Views: 151

Answers and Replies

  • #2
berkeman
Mentor
63,642
14,759
Thread moved to Homework Help.

Welcome to the PF, tweety. One of the rules we have for homework and coursework is that you show some of your own work, before we can offer tutorial help.

So what is your approach to this problem?
 
  • #3
tweety_2479
6
0
yea i just realized i don't no how to find the heat transferred as well but

i got the final pressure to be 15.8 bar and the final temp to be 328K and the work done to be 29KJ

ive done this by using the first equation above to find final P and PV=RT to find the final temp

is this right ? i haven't got any answers to them

thanks
 
Last edited:

Suggested for: Little help with thermodynamic question

Replies
16
Views
1K
Replies
1
Views
371
  • Last Post
Replies
2
Views
339
Replies
5
Views
616
Replies
1
Views
524
  • Last Post
Replies
6
Views
516
Replies
12
Views
975
Replies
11
Views
426
Replies
1
Views
397
Top