q and w for an Isolated System

[Lilyana Villa 3L]

Just to check, for an isolated system, q would be zero because the system would be insulated and not allow for heat transfer to occur between the system and surroundings right? Would work also be zero?

[Pranav Kadiyala 1A]

An isolated system means no matter or energy exchange. Work and q are both energy exchange, so there would be no work! This corresponds to the bomb calorimeter, which is an isolated system (no volume change = no work).

[Aditya Sundaram 3D]

For isolated systems, delta U is always 0 since heat cannot enter or leave and since its isolated, it doesn't lose or gain energy since nothing can go off to the surroundings

[JaesalSoma1E]

Delta U, q, and w all equal 0 for an isolated system.

[Keeryth Sandhu 1H]

For isolated systems, I'm pretty sure delta U is always 0.

[Julianna Shimabukuro 1D]

∆U for isolated systems is 0 since it is insulated, and therefore, the heat and work will be 0 as heat cannot pass through. There will be no work either since there will be no change in the volume.

[Kelly Tran 1J]

For isolated systems, q = 0 because there is no heat transfer, and w = 0 because there is also no volume change as nothing can go in or out. This means that delta U = 0 as well.

[Brianna Chen 3F]

Yes, since an isolated system has no transfer of energy or mass, there will be no work or heat (w=0) and (q=0).

[Marcus Lagman 2A]

Hello!

As everyone is saying, the change in internal energy would be equal to zero since no work nor heat transfer is taking place in an isolated system. Isolated systems are known to not be able to exchange any form of matter or heat between the system and surroundings thus resulting in no change in the system. A great example of this idea is a thermos flask by which the system is insulated to prevent change in energy and there is a lid to prevent change in matter. This all is consistent with the First Law of Thermodynamics, the law of conservation. I hope this helps!

[apurva-3E]

For an isolated system, Q = 0 because DELTA(U) will equal zero since nothing can interact with the system. Since no work can be done to the system, Q must equal zero.

[Talia Dini - 3I]

In an isolated system, both matter and energy can not be exchanged. Since work and heat are forms of energy exchanges, they would equal 0. Hope this helps!

[Bella Bursulaya 3G]

∆U is always 0 for an isolated system, because if you think about it, an isolated system cannot exchange matter or energy with its surroundings. Therefore, its internal energy doesn't change. It's interesting to think, however, if this is only theoretical. Most "isolated" systems still lose energy over time, such as thermoses, but ideally they shouldn't.

[Jacob Schwarz-Discussion 3I]

In an isolated system, both q and w would equal 0. Isolated systems always have an internal energy of 0

[Shreyank Kadadi 3K]

q and w would both be 0 for an isolated system, meaning that the delta u will be zero as well.

[Chudi Onyedika 3A]

Yes, both q and w would be 0.

[Jeremy Wei 2C]

Yes, in an isolated system q and w would both be 0, since no energy is exchanged between the surrounding and the system.

[OmarArafat_2K]

q is 0 since there is no heat transfer, and work is also 0 because there is also no volume change since nothing is able to go in or out. So this means that delta U is also 0.

[Annette Fishman]

delta U, q, and w are all equal to 0 for an isolated system since there is no energy transfer between the system and the surroundings

[Sejal Parsi 3K]

An isolated system means that there is no matter or energy exchange, so w and q would be zero.

[SamanthaTolentino 3D]

Isolated systems cannot exchange matter nor heat so work and q would both be 0 . This would make U 0 as well.