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# In a quark model of elementary particles, a neutron is made of one up quark of charge 23ε and two down quark of charges (−13e) . if they have a triangle configuration with a side length of the order of 10−15 m. the electrostatic potential energy of the neutron is MeV is:7.68-5.21-0.489.34

A
-0.48
B
-5.21
C
7.68
D
9.34
Solution
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#### Quark model of element particles, a neutron is made of one up quark of charge 23ε the two down quark at charge (−13e).We know,Protons, neutrons are each composed of three quarks triangle configuration with side length of the order of =10−15m.electronic potential energy =12mV2 =12lq2 =12×23×(−13×2)×10−15 =29×10−15 =−0.48

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