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Question

At a depth of 1000 m in an ocean, what is the absolute pressure? Given density of sea water is $$1.03 \times 10^3 kgm^{-3} ,\ g= 10ms^{-2}$$


A
104 atm
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B
100 atm
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C
108 atm
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D
110 atm
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Solution

The correct option is A 104 atm
Given: $$h=1000m  ,  d=1.03\times10^{3}kg/m^{3} ,  g=10m/s^{2}$$ 
The absolute pressure is given by: absolute pressure = pressure of water + atmospheric pressure
$$P=hdg+1atm=1000\times1.03\times10^{3}\times10+1atm=1.03\times10^{7}Pa+1atm$$
$$P=103atm+1atm=104atm$$

Physics

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