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An electron falls through a distance of ...

An electron falls through a distance of 1.5 cm in a uniform electric field of magnitude `2.0xx10^(4)N//C(Fig.a)`

Calculate the time it takes to fall through this distance starting from rest. If the direction of the field is reversed (fig .b) keeping its magnitude unchanged , calculate the time taken by a proton to fall through this distance starting from rest.

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