In moving out of a dormitory at the end of the semester, a student does 1.20 x 104 J of work. In the process, his internal energ
y decreases by 5.46 x 104 J. Determine each of the following quantities (including the algebraic sign): (a)W, (b)U, and (c)Q.
1 answer:
Answer:
(a) W=1.20×10⁴J
(b) U= -5.46×10⁴J
(c) Q= -4.26×10⁴J
Explanation:
Given that student does 1.20×10⁴J work
(a) W=1.20×10⁴J
Work done by student,so positive sign
During the process, his internal energy decreases by 5.46×10⁴J.
(b) U= -5.46×10⁴J.
As the Energy decreases therefore negative sign
For (c) Q
We know the formula
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