1. The problem statement, all variables and given/known data I don't know why everybody ignore my urgent questions. I do not know what to do seriously. What is the difference in blood pressure (mm-Hg) between the top of the head and bottom of the feet of a 1.60-m-tall person standing vertically? I know △p = pgh but in this book, they do not gives to any values. I want to know how it works if I don't know p 2. Relevant equations △p = pgh 3. The attempt at a solution I know the gh values so... △p = p(9.8m/s^2)(1.60m) but, I don't know what the hell is this.