At depth 10 m, the total pressure is approximately how many atmospheres?

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Multiple Choice

At depth 10 m, the total pressure is approximately how many atmospheres?

Explanation:
At depth, pressure in a fluid comes from two sources: the atmospheric pressure at the surface and the weight of the water above you. The total pressure is P = P_atm + rho g h. At the surface we have about 1 atmosphere. The water column of 10 meters adds roughly rho g h ≈ 1000 kg/m^3 × 9.8 m/s^2 × 10 m ≈ 98,000 Pa, which is about 0.97 atm. So the total pressure is about 1 + 0.97 ≈ 2 atm. That’s why the best choice is about 2 atm.

At depth, pressure in a fluid comes from two sources: the atmospheric pressure at the surface and the weight of the water above you. The total pressure is P = P_atm + rho g h. At the surface we have about 1 atmosphere. The water column of 10 meters adds roughly rho g h ≈ 1000 kg/m^3 × 9.8 m/s^2 × 10 m ≈ 98,000 Pa, which is about 0.97 atm. So the total pressure is about 1 + 0.97 ≈ 2 atm. That’s why the best choice is about 2 atm.

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