Cup of Tea

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Lina Petrossian 1D
Posts: 77
Joined: Fri Oct 05, 2018 12:16 am

Cup of Tea

Postby Lina Petrossian 1D » Sun Feb 03, 2019 11:53 pm

Could someone explain why a cup of tea is considered an open system?

Sarah Zhao 4C
Posts: 64
Joined: Fri Sep 28, 2018 12:28 am

Re: Cup of Tea

Postby Sarah Zhao 4C » Sun Feb 03, 2019 11:57 pm

It's open because you can change the amount of tea. If you are able to pour more tea into it, it's because it is open!

josephperez_2C
Posts: 70
Joined: Wed Nov 15, 2017 3:04 am

Re: Cup of Tea

Postby josephperez_2C » Sun Feb 03, 2019 11:59 pm

A system which can interchange mass and energy is considered an open system. A cup of tea is susceptible to the environment.

eden tefera 2B
Posts: 39
Joined: Fri Sep 28, 2018 12:21 am

Re: Cup of Tea

Postby eden tefera 2B » Mon Feb 04, 2019 12:08 am

since in a cup of tea will cool down over time, it will exchange energy with surroundings. since a cup is typically not covered on the top, tea could also leave the system . since both matter and energy can be exhanged, then a cup of tea is an open system

Brandon_Tran_2E
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: Cup of Tea

Postby Brandon_Tran_2E » Mon Feb 04, 2019 12:23 am

Because it is an open system the system also is at a constant pressure because the system's pressure is the same as the outside pressure.

Phil Timoteo 1K
Posts: 101
Joined: Fri Apr 06, 2018 11:05 am

Re: Cup of Tea

Postby Phil Timoteo 1K » Mon Feb 04, 2019 1:44 am

Because it is susceptible to change.

Mikka Hoffman 1C
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Joined: Fri Sep 28, 2018 12:23 am
Been upvoted: 2 times

Re: Cup of Tea

Postby Mikka Hoffman 1C » Mon Feb 04, 2019 10:02 am

It's open because it can exchange both matter and energy with its surroundings. For example, you can add or take away tea and it can also be cooled or heated.

Sapna Ramappa 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

Re: Cup of Tea

Postby Sapna Ramappa 1J » Mon Feb 04, 2019 4:34 pm

A cup of tea would be an open system because matter and energy can be transferred between the system and the surroundings.

juliasloan_4g
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Re: Cup of Tea

Postby juliasloan_4g » Mon Feb 04, 2019 5:36 pm

you can both change the matter within it (the tea) and transfer energy by holding it and making it warmer or cooler

Charles Hood Disc 1C
Posts: 39
Joined: Fri Sep 28, 2018 12:19 am

Re: Cup of Tea

Postby Charles Hood Disc 1C » Mon Feb 04, 2019 6:01 pm

An open cup of tea can have its matter and energy changed. It fully interacts with the surroundings.

Jennifer Torres 2L
Posts: 62
Joined: Tue Nov 14, 2017 3:01 am

Re: Cup of Tea

Postby Jennifer Torres 2L » Tue Feb 05, 2019 6:15 pm

A cup of tea is open to the surroundings. So matter can enter and exit (steam, sugar, etc.) and energy can leave in the form of heat.

Nina Do 4L
Posts: 61
Joined: Fri Sep 28, 2018 12:27 am

Re: Cup of Tea

Postby Nina Do 4L » Tue Feb 05, 2019 8:19 pm

A cup of tea can interact with its surroundings, ie release heat from the tea into the universe, making the universe infitesmilly warmer. Closed systems like a hydro flask or thermos cannot do that, it is isolated/insulated.

Selina Bellin 2B
Posts: 62
Joined: Fri Sep 28, 2018 12:25 am

Re: Cup of Tea

Postby Selina Bellin 2B » Tue Feb 05, 2019 9:12 pm

you can change it's energy AND matter. you can add or remove the tea, and you can heat it up/cool it down :)

Ricardo Martin 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:15 am

Re: Cup of Tea

Postby Ricardo Martin 1J » Wed Feb 06, 2019 9:36 am

It is open because matter and energy can be transferred in and out of it.

Lynsea_Southwick_2K
Posts: 55
Joined: Fri Sep 28, 2018 12:25 am

Re: Cup of Tea

Postby Lynsea_Southwick_2K » Wed Feb 06, 2019 10:26 am

As defined in the textbook an open system can exchange matter and energy

Laurence Tacderas 1K
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: Cup of Tea

Postby Laurence Tacderas 1K » Thu Feb 07, 2019 3:52 pm

The tea can receive and transfer matter to its surroundings, as well as energy in the form of heat

Katie_Duong_1D
Posts: 69
Joined: Fri Sep 28, 2018 12:27 am

Re: Cup of Tea

Postby Katie_Duong_1D » Thu Feb 07, 2019 4:26 pm

A cup of tea is an open system because energy and matter can exchange with the surroundings. You can add more/less tea (matter), and tea can become hotter/colder (energy).

That's the tea, sis

Attachments
chamomile-tea.jpg

Krista Mercado 1B
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: Cup of Tea

Postby Krista Mercado 1B » Tue Feb 19, 2019 1:36 am

It can exchange both matter and energy with its surroundings.


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