Introduction To Elementary Particles Solutions Manual Griffiths [ EASY ]

5.2 The quark content of the neutron is $udd$.

1.3 The antiparticle of the electron $e^{-}$ is the positron $e^{+}$.

6.2 The quark model explains the hadronic spectrum.

7.1 The weak interaction is responsible for $\beta$ decay.

2.1 The first particle accelerator was built in 1930 by Cockcroft and Walton.