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Required information

A $13\mathrm{.}5cm13\mathrm{.}5cm$ vertical chip has a constant surface temperature of $150C.$

Determine the Grashof number when the chip is placed in liquid $(30C).$

Given: The properties of air as follows:

$T_{f}C=90$

p$.k\frac{g}{m^3}=965\mathrm{.}3$

$,k\frac{g}{m}s=0\mathrm{.}315{10}^{-3}$

$,K^{-1}=0\mathrm{.}702{10}^{-3}$