Assumption on type of system

[Maaria Abdel-Moneim 2G]

Do we usually assume that a system is closed if it doesn't say otherwise?

[Mikayla Kwok 3K]

I think we do assume that the system is closed! From what I've seen, the problem will usually tell you if it's an open system.

[Brianna Chen 3F]

Most of the problems I've encounter deal with a closed system, so I would assume so.

[aashmi_agrawal_3d]

I think so because most systems we've dealt with in problems are closed and they will probably let us know if it is open.

[Ansh Patel 2I]

Hi! Unless stated otherwise, I think it's safe to assume that the system is closed given that our practice problems have been with closed systems.

[Jarrett Sung 3B]

I think it's good to assume the system is closed unless otherwise stated, especially because we've dealt with mostly problems with closed systems so far.

[Abraham De Luna]

Yes we usually assume that the system is closed unless we are told otherwise.

[Sam Wentzel 1F 14B]

Usually assume system is closed yes. Isolated or Open is unusually and should be specified.

[Jaden Kwon 3C]

Yeah you can assume a system is closed unless the problem states it's not because most problems we have worked on are closed.

[SashaAnand2J]

I would assume the system is closed! Especially since we have been practicing a lot of internal energy change problems, it would make sense that in the majority of instances, the system would need to be able to exchange energy with surroundings but not necessarily matter.

[Izamary Marquez 2H]

I think that if it's questionable, the question will clarify in the problem.

[Edgar Velazquez 2K]

Most of our problems deal with only energy, so I'd say it's safe to assume the system is closed unless it specifically says otherwise. If there was an exchange of mass, the problem would have to point that out and then we'd know it's not a closed system.

[Izamary Marquez 2H]

I usually assume the system is closed unless it states otherwise!

[Brianna Chen 3F]

Yes! In most of our problems, we usually assume that the system is closed unless the problem states otherwise.