A proton consists of two up and one down particle Refer to t

A proton consists of two \"up\" and one \"down\" particle Refer to their properties in Table 2 to calculate the net electric charge and spin of a proton. 6. A is a particle with a spin in halt-amounts of h (such as 1/2, 3/2 etc.). whereas a \"boson\" is a particle with a spin in terms of integers (such as 0, I. 2 etc.). Indicate from the following list which panicle is a and which is a boson. 7. A neutron consists of one \"up\" and two \"down\" particles, (a) Show that a neutron has no electric charge. (b) Is a neutron a or a boson? Briefly defend your answer.

Solution

5.

Proton\'s charge = 1.6 x 10^-19 C

Proton\'s Spin = 1/2

6.

Elecron: Fermion

Photon: Boson

Neutrino: Fermion

Proton: Fermion

7a.

Quarks carry fractional electrical charges. An \'up\' quark has a charge of +2/3 and a \'down\' quark has a charge of -1/3. A neutron has two \'down\' quarks and one \'up\' quark, so it has a total charge of (-1/3) + (-1/3) + (+ 2/3) = 0.

7b.

A baryon, such as the neutron, contains three fermionic quarks and thus it is a fermion.