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anonymous
 one year ago
Describe the balance of forces that hold together the nuclei of atoms. What happens when these forces get out of balance?
**Not sure how to explain this! Thank you:)
anonymous
 one year ago
Describe the balance of forces that hold together the nuclei of atoms. What happens when these forces get out of balance? **Not sure how to explain this! Thank you:)

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2the force which is acting among protons and neutrons, is the so called strong nuclear force. Such force can be explained, introducing a particle mediator of that nuclear force. Such mediator particle, is the pi meson (pion) , whose mass is about 140 MeV. In other words, as electromagnetic force is due to the mediator which is the photon, in the same way the nuclear force is due to an exchange, among the nucleons, of a pion, or meson pi, in fact the nuclear force is described inside a theory which is calle OPEP namely One Pion Exchange Potential

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohhh okay! and so when they get out of balance, what happens? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2when a nucleon, for example a proton, is out of the range of the nuclear force, then on it will act the electrostatic force, so it will repelled by other protons. When a neutron is out of the range of a nuclear force, then that nucleus will become instable

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2the nuclear force, acting among nucleons, is very attractive, nevertheless its range it is very short, that range is about 10^14 cm

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohhh okay! thank you!! :D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and so this problem is complete? :O

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2yes! I think so! If you want I can give you a simple computation, of the range of the strong nuclear force

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2keep in mind that the mediator particle, namely the pion or pi meson , was introduced by the famous physicist Hideki Yukawa (Japan) in the past 1934

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2Now, we can consider the pion a so called "virtual particle". It is virtual not, because it doesn't exist, it is called virtual because its existence violates the Heisenberg's Uncertainty Principle

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2so, we can write this equation: \[\Large \Delta E\Delta t \leqslant \hbar \] it is the violation of the Heisenberg's Uncertainty Principle, as you can see

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2Now, we can replace \Delat E, with the mass of the pion, namely: \[\Large \Delta E = {M_\pi }{c^2} = 140MeV\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2then we can solve that equation for \Delta t, being \Delta t the existence time of the pion, so we get: \[\Large \Delta t \simeq \frac{\hbar }{{140}}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2Now, since the velocity of the pion is close to the light speed, then we can find the spoace traveled by our pion, using this formula: \[\Large d = c\Delta t = \frac{{\hbar c}}{{140}} = \frac{{197}}{{140}} = 1.4fm\] being \[\Large \hbar c = 197MeV \cdot fm\] and \[\Large 1fm = {10^{  13}}cm\] fm=fermi
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