1. write down the difference between measurement of mass and measurement of weight.
2. Define mass, weight and density.
3. What is relative density?
Answers
Answer:
Relative density of a substance is defined as the ratio between the density of the substance to the density of water at 40C. Relative density is also known as specific gravity. The relative density of a substance is a pure number without any unit. It tells how many times a substance is heavier than water.
Answer:
1.Your mass is the same no matter where you go in the universe; your weight, on the other hand, changes from place to place. Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force.
2.Mass and Weight
The usual symbol for mass is m and its SI unit is the kilogram. ... The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. Density is mass/volume.
3.the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas.
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