A cubical ball is taken to a depth of 200m in a sea . the decrease in volume observed to be 0.1% then the bulk modulus of the Ball is( g= 10 ms^-2)
a)2x10^7pa
b)2x10^6
c)2x10^9
d)1.2x10^9
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The age of father is twice the sum of the ages his two children. After 20 years, his age will be equal to the sum of the ages of his children. Find the age of father.
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