Questions and Answers
What is mass density?
What is the formula for mass density?
D = mass/volume
What are the metric units for density?
kg/m^3
Density is a measure of concentration of _____
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What is weight density?
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What is the formula for weight density?
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What are the units for weight density?
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What is specific gravity?
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Study Notes
Mass Density
- Defined as mass per unit volume, indicating how much matter is contained in a given space.
- Calculated using the formula: D = mass/volume.
- Measured in metric units as kilograms per cubic meter (kg/m³).
Density Notation
- Density is represented by the capital letter "D."
Practical Example
- To calculate the mass density of water, utilize the mass of water in an aquarium, which is specified as 250 kg, alongside the aquarium's volume.
Weight Density
- Refers to the weight per unit volume of a substance, calculated as weight/volume.
- Different from mass density as it incorporates gravitational effects.
- Measured in newtons per cubic meter (N/m³).
Specific Gravity
- Represents the ratio of a substance's density compared to the density of water, providing a dimensionless value for easy comparison.
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