Why is q negetive? 1st law of thermodynamics

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newstudent1234
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For part b of this question why is the answer -q? Is it just because of everyday heat loss due to the surroundings being a lower temp or is there any other theoretical reason behind it?

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Last edited by newstudent1234; 1 month ago
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eaglespirit
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I guess q is zero because this is a adiabatic process??
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scimus63
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have a look here, it may answer your question

https://www.science-revision.co.uk/A...y_changes.html
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