0:00
Hello.
00:02
So here we got some information we got p1 2 .5 times 1020 the third pascal.
00:14
We got v1 which is 2 .1 little cube.
00:20
We got some work done which is 1480 juice.
00:29
This is a monoatomic gas the specific heat as 1 .67.
00:35
So the price it's a diabetic.
00:41
So we're going to have p1, v1, that equals 2 v2.
00:52
Okay, so p2 is going to be equal to p1 v1 over lav2.
01:05
Okay, try the substitution, 0 .5, then to the third times v1, 2 .1, that's going to be exponent 1 .67 over v2 exponent 1 .67.
01:30
So that's going to be equal to 8630.
01:38
So this is 30 point 7.
01:43
Divided by v2.
01:45
We don't know v2.
01:46
So let's just leave this for now.
01:52
Let's make the equation 1.
01:55
Now the work done is also given my desperation 1 over specific heat minus 1 to bracket p1 v1 minus p2 v2 so you can do a substitution the work is 14 80 that's going to be equal to 1 over 1 .67 minus 1 1 and going to go into 2 .5 times 10 to the 3rd arms 2 in 1 minus p2 v2 right so this this right is going to give you 0 .67 that's 1 .67 minus 1 is just 0 .67 not on multiplied by this is going to be 991 .6 whatever you have in this bracket that's going to give you 52 50 to 50 to 50 to 5 .0 okay that's going to be minus p2 v2.
03:29
So we can find p2v2.
03:33
Go to p2, v2.
03:36
Not just going to be 5250 minus 991 .6.
03:43
That is going to be 4258 .4.
03:55
Right? so now from equation 1, let's look at equation 1.
04:05
So equation 1 we have p2.
04:07
P2 .2 is 86 30 .7.
04:09
Over v2 to the power 1 .67.
04:12
So i'm going to substitute that here.
04:17
So this is 86 .30 .7 over v2 to the power 1 .67.
04:31
So it's going to be times.
04:33
There's another v2 here.
04:35
That's going to be equal to 42 -58 .4.
04:42
Okay...