An electrical short cuts off all power to a submersible diving vehicle when it is a distance of 30 mm below the surface of the ocean. The crew must push out a hatch of area 0.85 m2m2 and weight 330 NN to escape. 1.  If the pressure inside is 1.0 atmatm, what downward force must they exert on the hatch to open it? Express your answer in

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