Q$4($Liquid Mixing$)$: You work as an engineer in a factory that produces substance A$.$ For the production of this substance, the liquid mixture with a density of $803\mathrm{.}4k\frac{g}{m^3},$ a viscosity of $2\mathrm{.}2610-3$ Pa$.$s should be mixed. As a result of your literature research, you determined that the mixing process should be carried out at $0\mathrm{.}8rpm,$ with a $3-$blade marine impeller $(p=D$ with a diameter of $1m$ and a mixer height of $1\mathrm{.}25m.$ For this process, you can use a $0\mathrm{.}15kW$ motor and a metal tank with a diameter of $3m$ and a height of $7m.$ Calculate the power for the unbaffled tank by taking the height of the liquid $3m.$

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