Answer:
250 kJ
Explanation:
peak of curve
200kJ
I am pretty sure this is right because it isnt 50kj, that was the answer to my question which was different. My peak started at 150kJ, went up to 200, then dropped to 50kj, leading into my reasoning for my answer.
need speed of sound on lhs
1) thinner, diverge
2) thicker, converge
i got it right
