Lightning

Physics

6 September, 20:23

A person is diving in a lake in the depth of h = 15 m. The density of the water is rho = 1.0 x103 kg/m3. The pressure of the atmosphere is P0 = 1.0 x 105 Pa. The surface area of the top of the person's head is A = 0.051 m2.

Randomized Variables

h = 15 m

A = 0.051 m2

Part (a) Express the absolute pressure at the depth of h, P, in terms of P0,?, and h.

Part (b) Calculate the numerical value of P in Pa. P =

Part (c) Express the magnitude of the force exerted by water on the person's head F at the depth h in terms of P and A.

Part (d) Calculate the numerical value of F in N.