For shown situation, what will be the magnitude of minimum force in newton that can be applied in any direction so that the resultant force is along east direction?

What is the resultant force when two forces act in same direction?

What is the magnitude and direction of force on an electron moving along the direction of the magnetic field.

If force is applied on the body in the direction of motion then ?

What happens when force is applied in the direction of motion?

A point charge q is moving with speed v perpendicular to magnetic field B as shown in figure. Explain what should be the magnitude and direction of the applied electric filed so that the net force acting on the charge is zero.

Find the magnitude of the resultant of shown forces :-