A cylinder and piston assembly (defined as the system) is warmed by an external flame. The...

Question

Question

Answer 1

Answer #1

Apply First law of thermo:

Q - W = dE (for closed system) i.e. the cylinder + piston

Q = 559 J ( positive since it is absorbed)

W = 488 J done by the system to surrounding, so we assing this to be postive)

now...

from

Q - W = dE

dE = Q - W = 559 -488 J = 71 J

the energy change for the system is then only 71 J

Answer 2

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