Your teach is too easy.
What is the weight of a column of water of area .6cm^2 1.4 meters high?
Weight= volume*density*g
= .60cm(1m/100cm)^2* 1.4m*1E6kg/m^3*9.8N/kg=
=.6*EE-4*1.4*1EE6*9.8
A dike in Holland springs a leak through a hole of area 0.60cm2 at a depth of 1.4m below the water surface.
How much force must a boy apply to the hole with his thumb to stop the leak?
Express your answer to two significant figures and include the appropriate units.
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