A two member truss ABC is shown in the figure. The force (in kN) transmitted in member AB is ________

A truck accelerates up a 10° incline with a crate of 100 kg. Value of static coefficient of friction between the crate and the truck surface is 0.3. The maximum value of acceleration (in m/s² ) of the truck such that the crate does not slide down is _______

The difference in pressure (in $$N/{m^2}$$) across an air bubble of diameter $$0.001$$ $$m$$ immersed in water (surface tension $$ = 0.072$$ $$N/m$$) is _____________.

For an incompressible flow field , $$\overrightarrow {V,} $$ which one of the following conditions must be satisfied?