A particle has mass, m=0.1 kg, charge, q=+0.4 C and is moving on the x-y plane. At a moment of time called t=0, the part

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A particle has mass, m=0.1 kg, charge, q=+0.4 C and is moving on
the x-y plane. At a moment of time called t=0, the particle is at
position (x0=8 meter, y0=6 meter) and is
moving with a velocity (v0x=21.5 meter/s,
v0y=42.5 meter/s). At this moment of time, a uniform
magnetic field is turned on along the positive z-direction
perpendicular to the x-y plane. The magnitude of this magnetic
field is B=0.5 T. What is the value of coordinate, x or y of
the center of the circular orbit of the particle? (Pick whichever
you prefer and explicitly write “x is …” or “y is …”).