Hi all - in the question below I could do with some help on the "..explanation for the relative strengths..." bit, as I can't think of anything to say. 1. The problem statement, all variables and given/known data Compare and contrast the properties of the strong and weak interactions. Include in your account an explanation for the relative strengths of the interactions, the types of particles affected by each interaction and other distinguising characteristics. 2. Relevant equations - 3. The attempt at a solution Weak interactions can involve all leptons and quarks, and are mediated by W± or Z bosons; whereas strong interactions can only involve quarks (binding them as hadrons) and are mediated by gluons. The strength of the weak interaction falls of with distance (~10-2 at 10-18 m to ~10-13 at 10-15 m) which is opposite for the case of the strong interaction (~1 at large distances to <1 at small distances). Weak interactions can also violate conservation laws such as parity, strangeness and isospin - which the strong interaction cannot. The question is worth 4 marks (which I know doesn't mean much out of context) so I think I would need to cover the main aspects of each. As I said above I am not sure what to put for the explanation for the relative strengths. Cheers.