The value of unified atomic mass unit `u` is about (1) `1.61times10^(-22)kg` (2) `1.67times10^(-27)kg` (3) `9.1times10^(-31)kg` (4) `1.67times10^(-24)kg`

Use Avogadrs's number to show that the atomic mass unit is 1 u =1.66 xx 10^(-27) kg .

1.The definition of one atomic mass unit and its value is (a) 1/12^(th) the mass of an atom of oxygen-16, 1amu= 1.6 times 10^(-19)Kg (b) 1/16^(th) the mass of an atom of carbon-12,1amu = 9.1 times 10^(-31)Kg (c) 1/12^(th ) the mass of an atom of carbon-12,1amu = 1.66 times 10^(-27)Kg (d) The mass of helium nucleus, 1amu= 3.2 times 10^(-27)Kg

Order of magnitude of density of uranium nucleus is , [m = 1.67 x 10^(-27) kg]

Order of magnitude of density of uranium nucleus is , [m = 1.67 xx 10^(-27 kg]

A neutron breaks into a proton and electorn. Calculate the eenrgy produced in this reaction in m_(e) = 9 xx 10^(-31) kg, m_(p) = 1.6725 xx 10^(-27) kg, m_(n) = 1.6747 xx 10^(-27) kg, c = 3xx10^(8)m//sec .

Using Heisenberg's uncertainty principle, calculate the uncertainty in velocity of an electron if uncertainty in its position is 10^(-11)m Given, h =6.6 xx 10^(-14)kg m^2s^(-1), m=9.1 xx 10^(-31)kg

Assume that a neutron breaks into a proton and an electron . The energy reased during this process is (mass of neutron = 1.6725 xx 10^(-27) kg mass of proton = 1.6725 xx 10^(-27) kg mass of electron = 9 xx 10^(-31) kg )

The operating magnetic field for accelerating protons in a cyclotron oscillator having frequency of 12 MHz is (q= 1.6 xx 10^(-19) C, m_(p) = 1.67 xx 10^(-27) kg and 1 MeV = 1.6 xx 10^(-13J))

An electron is accelerated under a potential difference of 64 V, the de-Brogile wavelength associated with electron is [e = -1.6 xx 10^(-19) C, m_(e) = 9.1 xx 10^(-31)kg, h = 6.623 xx 10^(-34) Js]

Calculate the ratio of electric and gravitational force between two protons. Charge of each proton is 1.6 xx 10^(-19)C , mass is 1.672 xx 10^(-27)kg and G= 6.67 xx 10^(-11) Nm^(2) kg^(-2) .