Question #b9560

1 Answer
Jean Pierre G.
Feb 8, 2018

The depth of the lake = 4.9m

Explanation:

Use the equation: #P# = #h##rho##g#. This formula is used to find the pressure in liquids.

#P# refers to the pressure.
#h# refers to the height/depth.
#rho# refers to the density of the liquid.
#g# refers to the gravitational pull of the Earth.

Now, make h the subject of the formula: #P#/#rho##g# = #h#

Now, we assume that the density of the water is 1000#kg#/#m^3#.

Then, we input the values: #h#= 49000/(1000#xx#10)

Which gives us the answer of 4.9#m#.

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