If 850 kg of a liquid fills a one cubic meter volume, what does the value 0.85 designate regarding this substance_______________?
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Answer: C. specific gravity
Explanation
Specific gravity is the ratio of a substance's density to that of water. An 850 kg/m³ liquid density divided by water density of 1000 kg/m³ yields 0.85. Specific gravity remains a dimensionless number independent of measurement unit systems. Water has a standard reference density of approximately 1000 kilograms per cubic meter. Substances with specific gravities less than 0.85 float readily on water surfaces. Hydrometers measure specific gravity quickly by observing float immersion depths in liquids.
Petroleum engineers use specific gravity to identify oil grades and calculate bulk fuel storage masses. Automotive technicians check battery electrolyte specific gravity to assess battery charge status. Quality control laboratories verify chemical solution concentrations using specific gravity standards. Specific weight represents force per unit volume rather than dimensionless density ratios. Specific mass is not standard terminology; density or specific gravity are correct terms. Specific density is an incorrect phrase; density and specific gravity are distinct properties.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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