00:01
Dear students, the question is to calculate the change in internal energy of the system.
00:06
The system is a balloon which is cooled by removing 0 .653 kilojoule of heat.
00:13
It shrinks on cooling and the atmosphere does 384 joule of work on the balloon.
00:21
Now we have to express the answer that is the internal energy change in three significant figures including appropriate units.
00:30
Energy unit we know joule, here the balloon is cooled by removing.
00:37
So here the system, the balloon has lost heat.
00:41
So that means heat change equal to q equal to minus 0 .653 kilojoule which is equal to 0 .653 joule.
00:58
Similarly, work done, here work done is on the balloon because the atmosphere does work on the balloon.
01:07
It is given atmosphere does work on the balloon.
01:09
Therefore, work done is on the balloon...