What minimum strength of magnetic field is required to balance the gravitational force on a proton moving at speed 6*10^6 m/s?

Answer 1

e V B = Mp* g

e = 1.6*10^-19 C
Mp = proton mass in kg
V = 6*10^6 m/s
g = 9.8 m/s^2 (near Earth surface)
B will be in Tesla