Calculate the daily loss of energy by th...

Calculate the daily loss of energy by the earth, if the temperature gradient in the earth's crust is `32^(@)C` per km and mean conductivity of the rock is `0.008` of CGS unit. (Given radius of earth `=6400km`)

`10^(30)" cal"`

`10^(40)" cal"`

`10^(20)" cal"`

`10^(18)" cal"`

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