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A pi-meason hydrogen atom is a bound sta...

A `pi-meason` hydrogen atom is a bound state of negative charged pion (denoted by `pi^(bar), m_(pi) = 273 m_(e))` and a proton. Estimate the number of revolutions a `pi-meason` makes (averagely ) in the ground state on the atom before , it decays (mean life of a `pi-meason ~= 10^(-8) s`, mass of proton `= 1.67 xx 10^(-27) kg)`.

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