Question

Convert 76 cm of mercury pressure into $N m^{-2}$ using the method of
dimensions.

Answer 1

In order to convert 76 cm of mercury pressure into $N m^{-2}$ using the method of dimensions, the following steps are required:

Since, P= d*g*h

Where, d= density of mercury = 13.6 * 103 Kg/m3

And g = 9.8 m/s2

H= 0.76 m

Therefore, formula for pressure (P) =13.6 * 103* 9.8 *0.76 = 1.013*105 Nm-2