a$)$ Two thin flat plates are tilted at an angle of $=30$ with vertical in a tank of water whose surface tension is $0\mathrm{.}073\frac{N}{m}.$ At the free surface of water in the tank, the two plates are a distance of $1cm$ apart. The plates are $1m$ long into the paper. Assuming zero contact angles for the water$-$plate interface, calculate the capillary rise $\text{'}h\text{'}.$