FIGURE 15-3 -The U-Tube Shown in Figure 15-3 Contains Mercury with a Mercury

Multiple Choice

FIGURE 15-3
-The U-tube shown in Figure 15-3 contains mercury with a density of 13,600 kg/m³. It is open on one end and the other end is connected to a boiler, which contains water at high pressure. The water from the boiler pushes directly on the mercury column. What is the gauge pressure at point A in the boiler?

A) 4.54 kPa
B) 4.41 kPa
C) 128 Pa
D) 441 Pa
E) 449 Pa