Which of the following statements cannot be associated with the ...

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Which of the following statements cannot be associated with the electroweak interaction?
  a. The electroweak theory was proposed by Sheldon Glashow, Steven Weinberg, and Abdus Salam.
  b. The W and Z particles are responsible for the weak interaction.
  c. The W and Z particle masses are greater than 100 GeV/c².
  d. C. Rubbia and his team discovered massive bosons at CERN.

Question 2

The positron was discovered by which of the following physicist.
  a. Paul A. M. Dirac who discovered it in Great Britain.
  b. Hideki Yukawa who discovered it in Japan.
  c. The Austrian physicist V. F. Hess who discovered it in balloon flights.
  d. Richard Feynman who discovered it after proposing his diagrams.
  e. Carl Anderson who discovered it while at Caltech.

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Answer to Question 1

c. this statement is false. Both have masses below 100 GeV/c².

Answer to Question 2

e. Anderson first observed the positron.

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