Final answer:
To find the depth where the pressure exerted on a man is double the pressure at the surface of water, use fluid pressure principles and Pascal's Principle.
Explanation:
To find the depth at which the pressure exerted on a man is twice that of the pressure at the surface of water, you can use the concept of fluid pressure and Pascal's Principle. Pressure in a fluid increases with depth due to the weight of the fluid above. At a depth where the pressure is twice that at the surface, the pressure is equal to atmospheric pressure plus the pressure due to the depth, leading to the desired relationship.
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