In the fission of `._(94)^(239) Pu` by a thermal neutron, two fission fragments of equal masses and sizes are produced and four neutron are emitted. Find the force between the two fission fragments at the moment they are produced.
Given : `R_(0) =1.`1 fermi.

In the fission of ._(94)^(239) Pu by a thermal neutron, two fission fragmnets of equal masses and sizes are produced and four neutrosn are emitted. Find the force between the two fission fragments at the moment they are produced. Given : R_(0) =1. 1 fermi.

Consider the fission ._(92)U^(238) by fast neutrons. In one fission event, no neutrons are emitted and the final stable and products, after the beta decay of the primary fragments are ._(58)Ce^(140) and ._(44)Ru^(99) . Calculate Q for this fission process, The relevant atomic and particle masses are: m(._(92)U^(238))=238.05079u, m(._(58)Ce^(140))=139.90543 u, m(._(34)Ru^(99))=98.90594 u

The fission of a heavy nucleus gives, in general, two smaller nuclei, two or three neutrons, some beta- particles and some gamma- radiation. It is always true that the nuclei produced.

Nuclear fission experiments show that the neutrons split the uranium nuclei into two fragments of about same size. This process is accompanied by the emission of serveral.

Assertion: In the process of nuclear fission, the fragments emit two or three neutrons as soon as they are formed and subsequently emit particles. Reason : As the fragments contain an excess of neutrons over protons, emission of neutrons and particles bring their neutron/proton ratio the to stable values

An object of mass 5 kg is projected with a velocity of 20 m/s at angle of 60° to the horizontal. At the highest point of its path, the projectile explodes and breaks up into two fragments of masses 1 kg and 4 kg. The fragments separate horizontally after the explosion. The explosion releases internal energy such that the kinetic energy of the system at the highest point is doubled. If the separation between the two fragments when they reach the ground is x, then find the value of x/(5sqrt(3)) .

The force between two electrons when placed in air is equal to 0.5 times the weight of an electron,If mass of the electron is 9.1times10^(-31)kg ,the force between the two electrons is