Convert normal blood pressure readings of 120 over 80 mm hg to newtons per meter squared using the relationship for pressure due to the weight of a fluid (p = hρg) rather than a conversion factor. (b) discuss why blood pressures for an infant could be smaller than those for an adult. specifically, consider the smaller height to which blood must be pumped.

human body lies between 15989 N/m² to  10659 N/m²

height of the infants are small

Explanation:

normal blood pressure readings of 120 over 80 mm Hg

density of mercury = 13596 kg/m³

P₁ = ρ g h₁  = 13596 × 9.8 × 0.12 = 15989 N/m²

P₂  = ρ g h₂ =  13596 × 9.8 × 0.08 = 10659 N/m²

hence the blood pressure in the human body lies between 15989 N/m² to  10659 N/m².

b) infant has low pressure than the adult because the height of the infants are small so pressure is directly proportional to height more the height more will be the pressure.