What is the depth of the submarine ?

A submarine 9(3)/(4) metres in height is floating on water.If (1)/(3) of its height is under water,then what is the height of the submarine visible above water?

What is real depth?

If pressure at half the depth of a lake is equal to 2//3 pressure at the bottom of the lake then what is the depth of the lake ?

If pressure at half the depth of a lake is equal to 2//3 pressure at the bottom of the lake then what is the depth of the lake ?

If pressure at half the depth of a lake is equal to 2//3 pressure at the bottom of the lake then what is the depth of the lake ?

A submarine that is not moving sends out a sonar sound wave travelling at 2000 m /s is, which reflects off a boat back to the submarine. The sonar crew detects the reflected wave 8 s after it was sent out. How far away is the boat from the submarine ?

A submarine is operating at 100.0 m below the surface of the ocean . If the air inside the submarine is maintained at a pressure of 1.0 atmosphere , what is the magnitude of the force that acts on the rectangular hatch 2.0 m xx 1.0 m on the deck of the submarine ?