- #1

kimlu

- 11

- 0

## Homework Statement

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 22.5 m. Assume the density of the water is 1.00x10^3 kg/m3 and the air above is at a pressure of 101.3 kPa.

(b) What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 33.6 cm?

## Homework Equations

P(abs pressure)= ρgh+P(atmospheric pressure)

## The Attempt at a Solution

(1000)(9.81)(22.5)+101.3 = 322.025 kPa

I don't understand what I'm doing wrong my webassign says I'm off by a multiple of 10 and I can't do part b without getting part a right :(