You have a 30-ft tall cylindrical tank with a diameter of 15 ft, which has been filled to 20 ft with jet a (rho = 6.71 lbm/gal). (a) calculate the hydrostatic pressure at the bottom of the tank. give your answer in psig. (b) calculate the total force exerted on the vertical walls of the tank due to hydrostatic pressure. give your answer in lbf.

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.