A particle leaves the origin with a speed of 3 106 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x

If the particle is an electron

If the particle is a proton,

Explanation:

Initial speed at the origin,

to +ve x-axis

The particle crosses the x-axis at , x = 1.5 cm = 0.015 m

The particle can either be an electron or a proton:

Mass of an electron,

Mass of a proton,

The electric field intensity along the positive y axis , can be given by the formula:

If the particle is an electron:

If the particle is a proton:

i think it would be 5