Question

Calculate the height of a column of water equivalent to atmospheric pressure of 1bar if the water is at 150C. What is the height if the water is replaced by Mercury?

Answer 1

Given that P = 1bar = 10⁵N/m²

 P_atm = ρgh , for water equivalent

10⁵ = 1000 × 9.81 × h 

h = 10.19m                                                .......ANS 

P_atm = ρgh , for Hg

10⁵ = 13.6 × 10³ × 9.81 × h

 h = 0.749m                                              .......ANS

 ANS: 10.19m, 0.75m