Question

what is the range of mass with which we may deal in physics

Answer 1

For electron or electron holes in a solid, the effective mass is usually stated in units of the true mass of the electron $m _{e}$(9.11×$10 ^{-31}$Kg). In these units, it is actually in the range 0.01 to 10, but can also be lower or higher, for example reaching 1,000 in exotic heavy fermion materials, or anywhere from zero to infinity(depending on definition) in graphene. As it simplifies the more general band theory, the efective electronic mass can be seen as an important basic parameter that influences measurable properties of a solid, including everything from the efficiency of the solar cell to the speed of an integrated circuit.



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Answer 2

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The masses of the objects, we come across in the universe, vary over a very wide range.

These may vary from ting mass of the order of ${10}^{ - 30} kg$of an electron to the huge mass of about${10}^{55} kg$of the known universe.

I'm giving u a table which gives the range and order of the physical masses of various objects.

Object ➜Mass(kg)

Electron➜${10}^{ - 30}$

Proton ➜${10}^{ - 27}$

Uranium Atom➜${10}^{ - 25}$

Red blood Cell ➜${10}^{ - 13}$

Dust Particle➜${10}^{ - 9}$

Rain Drop➜${10}^{ - 6}$

Mosquito➜${10}^{ - 5}$

Grape➜${10}^{ - 3}$

Human➜${10}^{2}$

Automobile ➜${10}^{3}$

Boeing 747 Aircraft➜${10}^{8}$

Moon ➜${10}^{23}$

Earth➜${10}^{25}$

Sun➜${10}^{30}$

Milky way Galaxy➜${10}^{41}$

Observable Universe➜${10}^{55}$

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