The Problem states that K=1 (which is kind of misleading). So if we have a actual engine with K=5.33, our work should be less.
So, 1=Qh/(1000) and
5.33=Qh/(dollars we pay)
you will get $187.5 as your answer (you might think that is weird because an "actual" engine is more efficient than a...
Homework Statement
A 40 kg child and her 75 kg father simultaneously dive from a 100 kg boat that is initially motionless. The child dives horizontally toward the east with a speed of 2m/s, and the father dives toward the south with a speed of 1.5m/s at an angle of 37degrees above the...