ayoismeisalex
13.01.2021 •
Physics
Air in a balloon does 40 J of work expanding the balloon while absorbing 60 J of heat. What is the change in internal energy
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Ответ:
DU = 20 Joules
Explanation:
Given the following data;
Heat absorbed, Q = 60J
Workdone, W = 40J
To find the internal energy;
We would use first law of thermodynamics given by the formula;
Change in internal energy (DU) = Q - W
where;
U is internal energy.
Q is the heat absorbed.
W is the work done.
Substituting into the equation, we have;
DU = 60 - 40
DU = 20 Joules
Ответ:
A because it is potential energy