A cylindrical tank is having a hemispherical base. The height of the cylindrical portion is 4 m and the diameter is 3 m. At the bottom of this tank, an orifice of a diameter of 300 mm is fitted. Find the time required to completely empty the tank. Take Cd= 0.60. Include a diagram in your solution.   a.217 seconds b.127 seconds c.145 seconds d.175 seconds

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.