An electron in a region of a uniform electric field E=5x10 4 V/m is initially at rest at the origin. Find (a) the speed when the electron arrives point A which is 10 mm away from the origin. (b) If the electron enters a uniform magnetic field B = 5 T with its velocity in a direction perpendicular to magnetic field after point A as shown, the electron moves in a circular path. Find the radius of the path and draw the path with the direction of motion of electron. m=9,1*10-31 kg and e=1,6x10-16 C

An electron in a region of a uniform electric field E=5x10 4 V/m is initially at rest at the origin. Find (a) the speed when the electron arrives point A which is 10 mm away from the origin. (b) If the electron enters a uniform magnetic field B = 5 T with its velocity in a direction perpendicular to magnetic field after point A as shown, the electron moves in a circular path. Find the radius of the path and draw the path with the direction of motion of electron. m=9,1*10-31 kg and e=1,6x10-16 C

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can you please ans (a) (b) (c)?
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