Which row in the table correctly identifies the separation distance r r\,r at which the force is zero (transitioning between repulsive and attractive), and the approximate distance beyond which the force is negligible?
Transition separation (F=0F = 0F=0): 0.5 fm0.5\text{ fm}0.5 fm, Distance where force becomes negligible: 3.0 fm3.0\text{ fm}3.0 fm
Transition separation (F=0F = 0F=0): 1.0 fm1.0\text{ fm}1.0 fm, Distance where force becomes negligible: 3.0 fm3.0\text{ fm}3.0 fm
Transition separation (F=0F = 0F=0): 0.5 fm0.5\text{ fm}0.5 fm, Distance where force becomes negligible: 0.5 fm0.5\text{ fm}0.5 fm
Transition separation (F=0F = 0F=0): 3.0 fm3.0\text{ fm}3.0 fm, Distance where force becomes negligible: 1.0 fm1.0\text{ fm}1.0 fm
50 exam-style questions on AQA A Level Physics Particles, covering Constituents of the atom, Stable and unstable nuclei, Particles, antiparticles and photons, Particle interactions, Classification of particles, Quarks and antiquarks, and Applications of conservation laws. Each one has a worked solution and a mark scheme showing where the marks go.