The very first thing I noticed about her is that she’s rocking a TI 36X pro non-graphing calculator. It’s the most capable non graphing calculator you can get, and the most powerful calculator allowed on the FE exam. Almost certainly an engineering student.
@ScottHickle Wow. The more I think about this problem, the more impressive it sounds. Angle, position (in the middle of the water, at the edge, onto the ceramic), depth of the water, shape of the bowl, ambient noise, oops a loud fart, and probably a half dozen other factors muddy the signal