To find the mass of the pion plus (π⁺), we can follow these steps:
### Step 1: Understand the mass of the electron
The mass of an electron is a known constant. It is approximately:
\[ m_e = 9.1 \times 10^{-31} \text{ kg} \]
### Step 2: Determine the mass ratio
The mass of the pion plus (π⁺) is given as 273 times the mass of the electron:
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