Recent content by doodles

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    Air pressure needed for ballast

    Thanks Ideasrule:smile: P=1000kg/m^3(9.801m/s^2)(3150ft)(1/3.281ft)=9409676.928 pascals= 9410kpa I made a mistake and was using 9.81m/s^2 instead of 9.801m/s^2 I still can't figure out how I got pascals out of kg/m^3 s^2 any suggestions? These type of conversions get tricky.
  2. D

    Air pressure needed for ballast

    A submarine is submerged to a depth of 3150 ft in the Atlantic Ocean. What air pressure (in kpa) is needed to blow water out of the ballast tanks? I know the answer is 9410 kpa but I have been going in circles trying to figure this out. P=hd using seawater density of 64.0 pound feet cubed...