2 -m [10] (1) The drawing shows an electron 2.00 cm projected at the lower left side of a + + + + parallel plate capacitor and exiting at the upper right side. The initial speed of the electron is 5.0x105 m/'s. The capacitor is 2.00 em long, and its plates are separated 5 0 MY E 0.50 cm by 0.50 cm. The electron just misses the vo=7.0x10 m/s upper plate as it emerges from the field. -e O Assume that the electric field E between the plates is uniform everywhere and V - 5.0 x10 m/s [6] (a) find its magnitude E. [4] (b) Find the magnitude of the charge dy = 2.0 cm = 0.02 m du = 0.005, density on the plates (in C/m?). 0.005 m = (V + V)