In open channel flow, the specific energy is the total energy per unit weight of a liquid, where the component potential energy is measured from the bed of the channel as the datum.
A rectangular channel of $10 \mathrm{~m}$ width carries $20 \mathrm{~m}^3 / \mathrm{s}$ of water. The depth of flowing water is $1 \mathrm{~m}$. The specific energy for this flow condition is $\mathrm{m}$ $\text{(rounded off to one decimal place)}$.
Consider acceleration due to gravity $(g)=10 \mathrm{~m} / \mathrm{s}^2$.
