A diver swims in a pool that is 30 m deep. The diver swims 20 m above the bottom. If the diver descends to 10 m above the bottom, what is the gauge pressure?  
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    height of water above the man = 30-10=20 m 
density of water=1000 kg/m^3
 
now,
gauge pressure=h*d*g
=height of water*density of water*accelaration due to gravity
=20*1000*10
=200000 Pascal
      density of water=1000 kg/m^3
now,
gauge pressure=h*d*g
=height of water*density of water*accelaration due to gravity
=20*1000*10
=200000 Pascal
