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Stack #43378
Questions | Answers |
---|---|
What is mass? | Mass is a measure of thr amount of substance or matter in it. |
What is the SI unit of mass? | Kilogram (kg) |
What is density? | Density of a substance is defined as it's mass per unit volume. |
What is the SI unit for density? | Kilogram per cubic metre. |
What is weight? | Weight is the force of gravity on the mass. |
What is the SI unit of weight? | Newtons. (N) |
What is a moment? | It is the turning effect of a force. |
What is center of gravity? | It is defined as the point through which its whole weight appears to act for any sort of orientation of the object. |
Which of the following substanceshas the lowest density? lead, water, cork, air | Air |
Which of the following substances has the highest density? oakwood, mercury, crown glass, gold, glycerine | Gold |