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प्रश्न
Define mass.
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उत्तर
Mass is the measure of the amount of matter in an object. It is a fundamental property of matter and does not change with location or the object’s state.
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संबंधित प्रश्न
The unit of length convenient on the nuclear scale is a fermi : 1 f = 10– 15 m. Nuclear sizes obey roughly the following empirical relation : `r = r_0A^(1/3)` where r is the radius of the nucleus, A its mass number, and r0 is a constant equal to about, 1.2 f. Show that the rule implies that nuclear mass density is nearly constant for different nuclei. Estimate the mass density of sodium nucleus. Compare it with the average mass density of a sodium atom obtained in Exercise 2.27
Write true or false.
Mass is the measure of quantity of matter.
Tick the most appropriate answer.
Which of the following devices is used to measure mass?
Name the device commonly used to measure mass.
Complete the analogy.
Milk : Volume :: Vegetables :___?
Find the odd one out.
______ is used to measure mass.
Write a short note on the following:
Common (beam) balance:
Write a short note on the following:
Physical balance
Since 2019, the kilogram has been redefined based on which fundamental physical constant?
