Aliquid has a density that varies with depth h, such that ρ=(0.001h+1.60)slug/ft3, where h is in feet.

We need to find pressure when h = 85 ft

We know the formula for pressure P = hρg, where h is the height of liquid, ρ is the density of liquid and g is the acceleration due to gravity value.

We have ρ = (0.001h+1.60)slug/ = 515.24 kg/

                h = 25.908 m

                g = 9.8m/

  So pressure, P = 25.908*515.24*9.8 = 13088.61 N/

                             = 18.97 psi

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.