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Consider the system of four compartments shown in the figure. Each compartment in connected to the nearby compartments with mercury-filled glass manometers (shown in blue, with the density of mercury being 13.5 g/cm3). The compartments are ordered by increasing pressure from left to right and are stationary at ground level. The height difference in the mercury between compartments A and B is 17.2 cm, and between C and D is 6.3 cm.
a. If the absolute pressure is measured in compartment C at PC = 1.41 atm and compartment A is open to the atmosphere, what is the height difference H2, in centimeters, in the manometer between B and C?
b. What is the absolute pressure in compartment D, in atm?
c. If we were to replace compartment C and the manometers around it with a single manometer that went right from compartments B to D, what would the height difference be in this new manometer?
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