The magnitude of magnitude force on the proton is 2.4 x 10⁻¹² N.
The magnitude of magnitude force on the proton is calculated as follows;
F = qvB sinθ
where;
Substitute the given parameters and solve for the magnetic force.
F = (1.6 x 10⁻¹⁹) x (3 x 10⁶) x (5) X(sin90)
F = 2.4 x 10⁻¹² N
Thus, the magnitude of magnitude force on the proton is 2.4 x 10⁻¹² N.
Learn more about magnetic force here: https://brainly.com/question/13277365