. Protons are projected with initial speed v; = 9.55 km/s field electric into a region where a uniform E = (-720) N/C is present as shown in Figure P23.40. The protons are to hit a target that lies at a horizontal dis- tance of 1.27 mm from the point where the protons cross the plane and enter the electric field. Find (a) the two projection angles that will result in a hit and (b) the time of flight (the time interval during which the proton is above the plane in Fig. P23.40) for each trajectory.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.