For the truss shown below, Load $p_1=2\mathrm{.}6kN$ is applied at Joints $C$ and $G,$ Load $p_2=1\mathrm{.}1kN$ is

applied at Joint $F,$ and Load $p_3=1kN$ is applied at Joint $E.$ Determine the magnitude of the force

in Member NB:

Give your answer in $KN$ and to two decimal points