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The average density of Earth's crust 10 ...

The average density of Earth's crust 10 km beneath the surface is `2.7gm//cm^(3)`. The speed of longitudinal seismic waves at that depth is `5.4km//s` The bulk modulus of Earth's crust considering its behaviour as fluid at that depth is:

A

`7.9xx10^(10)Pa`

B

`5.6xx10^(10)Pa`

C

`7.9xx10^(7)Pa`

D

`1.46xx10^(7)Pa`

Text Solution

Verified by Experts

The correct Answer is:
A
`V=sqrt((B)/(rho))impliesB=V^2rho`
`=(5.40xx10^(3)m//s)^2(2.7xx10^3)`
`=7.9xx10^(10)Pa`
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