What is the absolute pressure at a depth of 9.91 m below the surface of a deep lake? Assume atmospheric pressure is 1.01×105 Pa .

P = 198.118 kPa

Explanation:

Given:

Atmospheric pressure = P = 1.01×10⁵

depth = h = 9.91 m

To find:

Absolute pressure P

Solution:

Density of water = ρ = 1.000x10 ³kg/m ³

acceleration due to gravity = ρ = 9.8 m/s²

P = P + ρgh

      = 1.01×10⁵ + 1.000x10 ³x 9.8 x 9.91

      = 101000 + 1000(9.8)(9.91)

      = 101000 + 97118

      = 198118 Pa

      = 198.118 kPa

P = 198.118 kPa

trig 15.3 cos

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