Answer:
117.3 atm
Explanation:
The hydrostatic pressure is given by P = ρgh where ρ = density of brine = 1.35 g/cm = 1.35 × 10³kg/m³, g = 9.8 m/s and h = 900 m
P = ρgh = 1.35 × 10³kg/m³ × 9.8 m/s × 900 m = 1.1907 × 10⁷ N/m²
Since 1 atm = 1.015 × 10⁵ N/m²,
The hydrostatic pressure in atm is 1.1907 × 10⁷ N/m²/1.015 × 10⁵ N/m² = 117.3 atm.
So, the instrument should be able to withstand 117.3 atm of pressure