In a cathode-ray tube (CRT), an electron travels in a vacuum and enters a region between two "deflection" plates which have equal and opposite charges. The dimensions of each plate are L = 12 cm by d = 3 cm, and the gap between them is h = 2.5 mm. (Note: the diagram is not drawn to scale and the direction of the electric field may not be correct, depending on your randomization.) During a 0.001 s interval while it is between the plates, the change of the momentum of the electron Ap is < 0, 8.00e-17, 0 > kg m/s. What is the electric field between the plates? Hint: remember the Momentum Principle (the relationship between Impulse and change in momentum.) E = N/C What is the charge (both magnitude and sign) of the upper plate? q =

In a cathode-ray tube (CRT), an electron travels in a vacuum and enters a region between two "deflection" plates which have equal and opposite charges. The dimensions of each plate are L = 12 cm by d = 3 cm, and the gap between them is h = 2.5 mm. (Note: the diagram is not drawn to scale and the direction of the electric field may not be correct, depending on your randomization.) During a 0.001 s interval while it is between the plates, the change of the momentum of the electron Ap is < 0, 8.00e-17, 0 > kg m/s. What is the electric field between the plates? Hint: remember the Momentum Principle (the relationship between Impulse and change in momentum.) E = N/C What is the charge (both magnitude and sign) of the upper plate? q =

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