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Question
Define and relate along with their unit: 1.mass 2.volume 3.density
4. Weight
4. Weight
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Solution
1)Mass (symbolized m) is a dimensionless quantity representing the amount of matter in a particle or object. The standard unit of mass in the International System (SI) is the kilogram (kg).
2)Volume is a measure of the amount of space that a substance or an object takes up. The basic SI unit for volume is the cubic meter (m3).
3)Density is the mass per unit volume. This means that thedensity of any solid, liquid or gas can be found by dividing its mass in kilograms by its volume in cubic metres.
4)The weight of an object is the force of gravity on the object and may be definedas the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.
2)Volume is a measure of the amount of space that a substance or an object takes up. The basic SI unit for volume is the cubic meter (m3).
3)Density is the mass per unit volume. This means that thedensity of any solid, liquid or gas can be found by dividing its mass in kilograms by its volume in cubic metres.
4)The weight of an object is the force of gravity on the object and may be definedas the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.
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