In beta^- decay, the quark change is:

  1. a down quark changes into an up quark
  2. a strange quark changes into an up quark
  3. an up quark changes into a down quark
  4. no quark changes
Answer

A) a down quark changes into an up quark

d to u + e^- + barnue. SLO P-11-F-15 · Knowledge

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