An Open-Tube Manometer Is Used to Measure the Gauge Pressure

Multiple Choice

An open-tube manometer is used to measure the gauge pressure in a tank.If the manometer is filled with mercury, and the open end is at a height of 15 cm above the end attached to the tank, what is the gauge pressure in the tank? The density of mercury is 14 x 10³ kg/m³.

A) 2.1 x 10³ Pa
B) 2.1 x 10⁴ Pa
C) 4.0 x 10⁴ Pa
D) 1.2 x 10⁵ Pa
E) 2.1 x 10⁶ Pa