exam questions i have gotten wrpng Flashcards

1
Q

Explain which fundemental interaction is responsable for potassium to decay into argon by electron capture realising an electron neutrino

[2 marks]

A

Weak interaction because it involves leptons AND hadrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

K-40 decays to form Ca-40.

Suggest how the emissions from a nucleus of decaying potassium can be used to confirm which decay process is occurring.

[3 marks]

A

The emission is beta minus
- electron released from nucleus
- antineutrino released
can be detected through cloud chamber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Explain why a force is required to hold nucleons together in the nucleus

2marks

A

Due to electrostatic repulsion between protons, the protons and neutrons would not remain stable in the nucleus hence a force is required

How well did you know this?
1
Not at all
2
3
4
5
Perfectly