Six molecules speed 2 unit , 5 unit , 3unit, 6 unit, 3 unit , and 5unit , respectively . The rms speed is

Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units respectively. The rms speed is -

The unit of speed is

The dimension of two rectangular parallelopipeds are 6 unit, 4unit, 4 unit and 8 unit, (2h + 1)unit, 2 unit respectively. If the volume of the two parallelopipeds are equal, then the value of h is

ABCDEF is a regular hexagon , with the sides AB, AC, AD, AE and AF representing vectors 1 unit , 2 units , 3 units , 4 units and 5 units respetively . Find their resultant ?

Unit of speed is