Question: need more explanation for part (b) 9. The practical limit to an electric field in air is about 3.00x106N/C. Above this strength, sparking takes place

need more explanation for part (b)

need more explanation for part (b) 9. The practical limit to an

9. The practical limit to an electric field in air is about 3.00x106N/C. Above this strength, sparking takes place because air begins to ionize and charges flow, reducing the field. (a) Calculate the distance a free proton must travel in this field to reach 3.00% of the speed of light, starting from rest. (b) Is this practical in air, or must it occur in a vacuum

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