Find
the total number of neutrons and Find
the total mass of neutrons, in 7 mg of `C^14` (Assume that mass of a neutron = `1.675 xx 10^-7 kg`)

Find the total mass of protons, in 34 mg of NH_3 at STP.

The tatal number of neutrons in dipositve zinc ion with mass number 70 is

Find the values of ^(10)C_7

Find the wavelength for a beam of neutrons, whose kinetic energy is 100 eV. Given mass of neutron = 1.676 xx 10^-24g .

Find the total surface area of cubes having the following sides. 7.2 cm

Find the order of magnitude of the following quantities: Mass of electron= 9.1 xx 10^31 kg

Calculate the de Broglie wavelength of proton, if its speed is 10^7 cm//s . Given: mass of proton = 1.67 xx 10^-27 kg .

For proton acceleration, a cyclotron is used in which a magnetic field of 1.4 Wb//m2 is applied find the time period for reversing the electric field between the two Ds. Given that mass of the proton = 1.67 x 10^-27 kg , charged proton = 1.6 xx 10^-19 C

Find the total number of numbers divisible by 2 which can be formed with six digits 1, 2, 4, 5, 6, 7.