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The depth x to which a bullet penetrates...

The depth x to which a bullet penetrates a human body depends on (i) coeffeicint of elasticity, `eta` and (ii) KE `(E_k)` of the bullet, By the method of dimensions, show that
`x prop ((E_k)/(eta))^(1//3)`

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`d propto eta^(-1/3), E^(1/3)" or "(E/eta)^(1/3)`
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