Methane gas flows through a horizontal constant-area pipe of \(15 \mathrm{~cm}\) diameter. At section \(1, p_{1}=6\) bar abs., \(T_{1}=66^{\circ} \mathrm{C}\), and \(V_{1}=30 \mathrm{~m} / \mathrm{s}\). At section \(2, T_{2}=38^{\circ} \mathrm{C}\) and \(V_{2}=110 \mathrm{~m} / \mathrm{s}\).

(a) Determine the pressure at section 2.

(b) Find the total wall frictional force.

(c) What is the heat transfer?