Which of the following has highest coefficient of discharge?

If a number of forces act simultaneously on a particle, it is possible________?

A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is________?

Where a structural component or a system is providing lateral support to five or more walls or columns, the lateral load to be resisted may be taken as________?

The characteristics of fresh and septic sewage respectively are________?

Minimum thickness of load bearing RCC wall should be________?