Figure P27.46 shows the semicircular path through which charged particles travel in the magnetic field of a mass spectrometer. If the particles are oxygen ions carrying a charge of \(-2 e\) and the magnetic field magnitude is \(0.20 \mathrm{~T}\), how long does it take each ion to travel the semicircular path through the magnetic field? The mass of an \(\mathrm{O}^{2-}\) ion is \(2.6 \times 10^{-26} \mathrm{~kg}\).

Data from Figure P27.46

0.20 m B into page ion trajectory of ion -detector x