Calculate (using one, two and four elements) the temperature distribution and the heat dissipation capacity of a fin of length \(4 \mathrm{~cm}\) and cross-sectional dimensions of \(6 \mathrm{~mm} \times 4 \mathrm{~mm}\) with a heat transfer coefficient of \(0.1 \mathrm{~W} / \mathrm{m}^{2}{ }^{\circ} \mathrm{C}\) and a thermal conductivity of the material of the fin as \(0.5 \mathrm{~W} / \mathrm{m}{ }^{\circ} \mathrm{C}\). Base temperature is \(90^{\circ} \mathrm{C}\), and the tip is insulated.