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प्रश्न
Complete the analogy.
Milk : Volume :: Vegetables :___?
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उत्तर
Milk: Volume:: Vegetables: mass?
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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
Name the instrument which is commonly used to measure the mass of a body. State how is it used?
Tick the most appropriate answer.
The SI unit of mass is
We can say that mass of an object is 126 kg.
Find the odd one out.
1 kg of rice is weighed by ______.
Mass:: Balance: Length:: ______.
Using electronic balance weight can be measured accurately.
If Planck’s constant (h) and speed of light in vacuum (c) are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three chosen fundamental quantities?
- Mass of electron (me)
- Universal gravitational constant (G)
- Charge of electron (e)
- Mass of proton (mp)
Since 2019, the kilogram has been redefined based on which fundamental physical constant?
