What is the mass of a proton?

What is point mass ?

A proton projected in a magnetic field of 0.020 T travels along a helical path of radius 5.0 cm and pitch 20 cm. Find the components of the velocity of the proton along and perpendicular to the magnetic field. Take the mass of the proton =1.6X10^(-27) kg.

""_(92)U^(238) emits 8 alpha particles and 6 beta particles. What is the neutron / proton ratio in the product nucleus.?

What is mass defect?

Calculate the binding energy of a deutron. Given that mass of proton = 1.007825 a.m.u mass of neutron = 1.008665 a.m.u . mass of a deutron = 2.014103 a.m.u .

Calculate the binding energy per nucleon of ""_3^7Li (7 u) , Given mass of a proton = 1.007825 u and mass of neutron = 1.008665u .