The pressure on Pisces V at its greatest depth is approximately 20,105,370 Pa.
To calculate the pressure at a certain depth in a fluid, we can use the equation: pressure = density × gravity × depth.
In this case, the fluid is seawater and the depth is 1981 meters. The density of seawater is approximately 1025 kg/m³, and acceleration due to gravity is approximately 9.8 m/s².
Substituting the values into the equation, we get: pressure = 1025 kg/m³ × 9.8 m/s² × 1981 m = 20,105,370 Pa.
Therefore, the pressure on Pisces V at its greatest depth is approximately 20,105,370 Pa.