Delta U


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305113590
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Joined: Fri Sep 28, 2018 12:28 am

Delta U

Postby 305113590 » Sun Feb 03, 2019 6:07 pm

What does a negative and positive delta U value tell us?

Elaine Pham 2E
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Re: Delta U

Postby Elaine Pham 2E » Sun Feb 03, 2019 6:12 pm

A positive delta U means the internal energy of the system you are looking at has increased while a negative delta U means internal energy of the system has decreased.

Edward Xie 2E
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Joined: Fri Sep 28, 2018 12:23 am

Re: Delta U

Postby Edward Xie 2E » Sun Feb 03, 2019 6:14 pm

Positive delta U means an increase in the internal energy of the system, while negative delta U is a decrease in the internal energy.

Diviya Khullar 1G
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Re: Delta U

Postby Diviya Khullar 1G » Sun Feb 03, 2019 6:16 pm

represents the change in internal energy.
A positive tells us that the internal energy of gas has increased (usually because the temperature increased and the molecules are moving faster.)
A negative tells us that the internal energy of gas has increased (because the temperature has decreased and the molecules have slowed down.)

Kavvya Gupta 1H
Posts: 35
Joined: Fri Sep 28, 2018 12:21 am

Re: Delta U

Postby Kavvya Gupta 1H » Sun Feb 03, 2019 7:11 pm

a positive delta u means in an increase in the internal energy due to an increase in temperature
a negative delta u means in a decrease in the internal energy due to a decrease in temperature

daniella_knight1I
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Re: Delta U

Postby daniella_knight1I » Mon Feb 04, 2019 3:14 pm

Positive value means an increase in internal energy while a negative one means a decrease.

Brian Hom 2F
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Joined: Fri Sep 28, 2018 12:24 am

Re: Delta U

Postby Brian Hom 2F » Mon Feb 04, 2019 3:39 pm

Delta U is the change in internal energy and it is a state property. A positive delta U value tells us that Ufinal is greater than Uinitial or the system gained energy. A negative delta U tells us that Ufinal is less than Uinitial or the system has lost energy.

Yiting_Gong_4L
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

Re: Delta U

Postby Yiting_Gong_4L » Mon Feb 04, 2019 4:03 pm

Delta U is the change in internal energy. If it is positive that means the internal energy is increasing while a negative means decreasing.


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