# Elementary particle

1. Mar 13, 2008

### rojasharma

The charge-to mass ratio of the $$\pi-$$particle was determined. The charge-to-mas ratio of the electron is 1.76x10^11C/kg. a) predict which particle has a greater mass-the electron, or the $$\pi-$$particle. b) use the value of the elmentary charge to calculate the mass of the $$\pi-$$particle in kg. Compare the mass of the $$\pi-$$particle to the mass of the electron.
for a) i think charge has greater mass... b) i think i have to use q/m=c/r, but i donot have a value for r.