Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
 alt="### Numeric Entry Guidelines
For numeric entry in the Blackboard (Bb) system, the following standard guidance applies:
- Enter more digits than are significant in the answer field to ensure correct answers are marked as correct.
- Convert to standard units if necessary unless otherwise stated.
- Do not enter the unit in the answer field.
- If you choose to use scientific notation, 2.0563 × 10⁻⁴ is entered as 2.0563E-4 (no spaces, the E must be capitalized).
### Exercises
1. **Calculate the density of a block of unknown metal**:
- Mass: 234.00 g
- Cube side: 9.000 cm
2. **Calculate the volume of a 5.00 kg nugget of pure gold**.
3. **If the nugget in the previous problem were cast into a cube**, what would the length of one side be, measured in centimeters?
4. **Calculate the mass of blood in the average human body**, given the average volume of 5.00 L.
5. **If a cylindrical rod of uranium is 25.00 cm long and has a mass of 9.874 kg**, what is its radius?
### Explanation of Diagrams and Graphs
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