posted by AL .
At a certain location, the horizontal component of the earth's magnetic field is 2.5 x 10^-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.
solve for B
can you please show me what you are doing to solve for v (not B)
v = QB/mg
For Q, use the charge of a proton, in Coulombs. For m, use its mass. The values for proton mass ansd charge are readily available in your textbook or online.
g= 9.8 m/s^2
its V=MG/QB MATE