In example R9.4, a kaon (whose mass is $498 \mathrm{MeV}$ ) decays to two pions (each with a mass of $135 \mathrm{MeV}$ ).

-(b) The total system's mass decreases in this process.

Name: In example R9.4, a kaon (whose mass is $498 \mathrm{MeV}$ ) decays to two pions (each with a mass of $135 \mathrm{MeV}$ ). -(b) The total system's mass decreases in this process.
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Question

In example R9.4, a kaon (whose mass is $498 \mathrm{MeV}$ ) decays to two pions (each with a mass of $135 \mathrm{MeV}$ ).
 
-(b) The total system's mass decreases in this process.

Quizplus · Accepted Answer

In any process, according to the law of conservation of mass, the total mass of the system remains constant; it cannot decrease.

In Example R9 498MeV498 \mathrm{MeV}498MeV ) Decays to Two Pions (Each with a Mass Of )

In Example R9 $498 \mathrm{MeV}$ ) Decays to Two Pions (Each with a Mass Of )