$h =u \cos \theta t_2-\frac{1}{2} g t_2^2 \ldots(2)$
Equating (1) and (2) and substituting the value of $t_1$ and $t_2$ we get
$u \cos \theta=19.6 \;ms ^{-1}$
Maximum height $=\frac{u^2 \cos ^2 \theta}{2 g}=19.6 \;m$
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| Heat flow | Electrostatics |
| $T( r )$ | $V( r )$ |
| $j ( r )$ | $E ( r )$ |
We exploit this equivalence to predict the rate $Q$ of total heat flowing by conduction from the surfaces of spheres of varying radii, all maintained at the same temperature. If $\dot{Q} \propto R^{n}$, where $R$ is the radius, then the value of $n$ is