Question

Part Description Which is true? 1. Absolute pressure-atmospheric pressure - gage pressure A. 2. Absolute pressure-atmospheric pressure + gage pressure If we assume Standard Temperature and Pressure (called "STP") the surface of the Tennessee River is at a gage pressure of 0 psi. What is the gage pressure 10 feet below the B. surface of the Tennessee River? 1. (62.4 lb/ft(10 ft) 2. (62.4 lb/ft3)(32.2 ft/s2)(10 ft)

Answer 1

PART A:

Correct equation is:

• (2) Absolute pressure = atmospheric pressure + gage pressure.

PART B:

The pressure under the river is given by:

phwater9 32.2 (62.4 lb/ft3) (32.2 ft/s) (10 ft) 32.2

:: P = (62.4 lb/ft) x (10 ft)

So the correct option is (1).