> > Second, my favorite dimensional analysis problem: you presumably know > that the fuel efficiency of a car is often expressed as litres of petrol > per 100km, right? Well, litres of petrol are a volume measure, and 100km is > a length measure. Volume is length^3, so litres of petrol per 100km > is length^3/length = length^2 > > What might the "real world" significance of this area be? (Answer later > if no one gets/spoils it.)
Nice. One of my favourites as well. :) -- Sumant Srivathsan http://sumants.blogspot.com
