Answer :
The pressure on the skin diver at a depth of 30 ft in fresh water is approximately 26 psi.
The pressure on a skin diver who has descended to a depth of 30 ft in fresh water can be calculated using the formula P = ρgh,
where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth.
In this case, since the diver is in fresh water, we can use the density of fresh water, which is approximately 62.4 lb/ft^3.
The acceleration due to gravity is approximately 32.2 ft/s^2.
Substituting these values into the formula, we get P = (62.4 lb/ft^3) * (32.2 ft/s^2) * (30 ft).
Find the pressure in psi (pounds per square inch), we need to convert the units. 1 lb/ft^2 is equal to 0.00694 psi.
So, the pressure on the skin diver at a depth of 30 ft in fresh water is approximately (62.4 lb/ft^3) * (32.2 ft/s^2) * (30 ft) * (0.00694 psi/lb/ft^2).
Simplifying the calculation, the pressure is approximately 26 psi.
Therefore, the correct answer is 26.
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