Questions
Pickout the correct statement for the following pairs of work and heat
a
W = - 500J and Q = 0, U decreases
b
W = - 100J, Q = - 100, U increases
c
W = 0, Q = - 200J, U is constant
d
W = 300J, Q = 500 J, U increases
detailed solution
Correct option is D
By first Law of Thermodynamics, Q=ΔU+W ⇒ΔU=Q−W If Q=0,W=−500J,ΔU=+500J (increases) If W=−100J,Q=−100J,ΔU=0 (constant) If W=0,Q=−200J,ΔU=−200J (decreases) If W=300J,Q=500J,ΔU=+200J (increases)Talk to our academic expert!
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