A large tank with a nozzle attached contains three immiscible, in viscid fluids as shown. Assuming that the changes in h1, h2 and h3 are negligible, the instantaneous discharge velocity is
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$= \sqrt{2g \times \Big[\frac{\rho_1 h_1}{\rho_3} + \frac{\rho_2h_2}{\rho_3} + h_3 \Big]}\\
= \sqrt{2gh_3 \times \Big[\frac{\rho_1 h_1}{\rho_3h_3} + \frac{\rho_2h_2}{\rho_3h_3}\Big]}$Keep practicing — related questions
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