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In the figure, an electron with an initial kinetic energy of 4.10 keV enters region 1 at time t = 0. That region contains a uniform magnetic held directed into the page, with magnitude 0.0140 T. The electron goes through a half-circle and then exits region 1, headed toward region 2 across a gap of 20.0 cm. There is an electric potential difference AV = 1900 V across the gap, with a polarity such that the electron's speed increases uniformly as it traverses the gap. Region 2 contains a uniform magnetic field directed out of the page, with magnitude 0.0184 T. The electron goes through a half-circle and then leaves region 2. At what time t does it leave? Region 1 Region 2 OB2 Number Units