Nuclear and particle physics

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Question 27

State how the magnitude and nature (repulsive or attractive) of the strong nuclear force between two nucleons varies as their separation distance, $r$ , increases from $0$ to values greater than $fm4\text{ fm}$ .

[3]

Identify the only baryon that is stable when free (not bound within a nucleus), and state its quark structure.

[2]

Write a decay equation representing beta-minus ( $β−\beta^-$ ) decay in terms of the fundamental quarks and leptons involved.

[2]

A nucleus with nucleon number $A$ can be modeled as a sphere of radius $R = r_0 A^{1/3}$ , where $r_0$ is a constant.

By first expressing the volume $V$ of the nucleus in terms of $A$ , show that the nuclear density $ρ0\rho_0$ is constant (independent of $A$ ) and is given by:

\rho_0 = \frac{3m_n}{4\pi r_0^3}

where $m_n$ is the average mass of an individual nucleon.

[3]

Identify the only baryon that is stable when free (not bound within a nucleus), and state its quark structure.

[2]

Write a decay equation representing beta-minus ( $β−\beta^-$ ) decay in terms of the fundamental quarks and leptons involved.

[2]

A nucleus with nucleon number $A$ can be modeled as a sphere of radius $R = r_0 A^{1/3}$ , where $r_0$ is a constant.

By first expressing the volume $V$ of the nucleus in terms of $A$ , show that the nuclear density $ρ0\rho_0$ is constant (independent of $A$ ) and is given by:

\rho_0 = \frac{3m_n}{4\pi r_0^3}

where $m_n$ is the average mass of an individual nucleon.

Nuclear and particle physics

Question 27

Markscheme

Nuclear and particle physics

Question 27

Markscheme

Nuclear and particle physics

Question 27

Nuclear and particle physics Questions

Nuclear and particle physics

Question 27

Nuclear and particle physics Questions