It looks like it given the symbols used. P for pressure, rho for density etc. u-arrow is definitely a vector field, so it could be fluid flow. Otherwise it could be equally anything described by a vector field, like electromagnetism or gravity but they usually have a lot more E and G involved I think. I used to solve these but then I got a certificate so now I don’t have to.

There’s some faulty reasoning here.
Parent comment challenges the assumption that the marks were made by a female, and you say “you’re the reason the professor felt the need to give this example”, although the example was given in order to challenge assumptions of gender.
OP is actually learning from the example if anything, since they are challenging gender assumptions.
On top of that, your use of “you guys”, and your generalisations about men are evidence of the exact type of biased thinking this example is trying to challenge.