Electric Field Problem Set 1 A proton is released in a uniform electric field, and it...

Transcribed Image Text:

Electric Field Problem Set 1 A proton is released in a uniform electric field, and it experiences an electric force of 3.75x10-14 N toward the south. What are the magnitude and direction of the electric field? 2.34105 N/C south 2 What are the magnitude and direction of the electric field at a point midway between a +8.0 and a -7.0 charge 8.0 cm apart? Assume no other charges are nearby. 8.410 N/C 3 (a) Determine the electric field at the origin 0 due to the two charges at A and B. (b) Repeat but let the charge at B be reversed in sign. a) 3kQ 240 y A +2 +Q B 12 0 4 An electron (mass m-9.11x10-31 kg) is accelerated in the uniform field (E=1.45x104N/C) between two parallel charged plates. The separation of the plates is 1.10 cm. The electron is accelerated from rest near the negative plate and I passes through a tiny hole in the positive plate. (a) With what speed does it leave the hole? (b) Show that the gravitational force can be ignored. 7.49106 m/s 5 In a simple model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 1.1x106 m/s. Determine the radius of the electron's orbit. 2.110m x Electric Field Problem Set 1 A proton is released in a uniform electric field, and it experiences an electric force of 3.75x10-14 N toward the south. What are the magnitude and direction of the electric field? 2.34105 N/C south 2 What are the magnitude and direction of the electric field at a point midway between a +8.0 and a -7.0 charge 8.0 cm apart? Assume no other charges are nearby. 8.410 N/C 3 (a) Determine the electric field at the origin 0 due to the two charges at A and B. (b) Repeat but let the charge at B be reversed in sign. a) 3kQ 240 y A +2 +Q B 12 0 4 An electron (mass m-9.11x10-31 kg) is accelerated in the uniform field (E=1.45x104N/C) between two parallel charged plates. The separation of the plates is 1.10 cm. The electron is accelerated from rest near the negative plate and I passes through a tiny hole in the positive plate. (a) With what speed does it leave the hole? (b) Show that the gravitational force can be ignored. 7.49106 m/s 5 In a simple model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 1.1x106 m/s. Determine the radius of the electron's orbit. 2.110m x