The speed to which the alpha particles are initially accelerated, in Mm/s and to three decimal places, is

The direction of the magnetic field in the velocity selector, taking the particle beam as your +x-axis and the +y-axis as vertically up, is

The magnitude of the electric field in the velocity selector, in MV/m and to three decimal places, is

The magnitude of the charge on the plates in the velocity selector, in nC and to three decimal places, is

explanation and step by step would be helpful to understand.

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The velocity selector into which the particles are sent has two parallel 12.0000 cm² plates with a 5.0000 cm separation distance that create its electric field. The lower plate is at a higher potential than the upper plate. A 0.5000 T magnetic field surrounds the plates. Again, the velocity selector is designed to filter out any particles that do not have the same energy as the particle accelerator. The potential difference through which the alpha particles are initially accelerated, in kV and to one decimal place, is The velocity selector into which the particles are sent has two parallel 12.0000 cm² plates with a 5.0000 cm separation distance that create its electric field. The lower plate is at a higher potential than the upper plate. A 0.5000 T magnetic field surrounds the plates. Again, the velocity selector is designed to filter out any particles that do not have the same energy as the particle accelerator. The potential difference through which the alpha particles are initially accelerated, in kV and to one decimal place, is