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- 3. What is the magnitude of the electric field at the black dot labeled A in the figure? 3cm A) 9,470 V/m B) 10,000 V/m C) 11,100 V/m D) 12,600 V/m E) 14,900 V/m A InC 8cm +,1. An electron is to be accelerated in a uniform electric field having a strength of 2.1-106 (a) What energy in keV is given to the electron if it is accelerated through 0.3 m? AKE = keV m (b) Over what distance (in km) would it have to be accelerated to increase its energy by 43 GeV? d = km Hint: How is potential energy, PE, gained by an electron related to the uniform electric field? How is the potential difference, V, related to the uniform electric field?If a 0.2 kg object (carrying a -250 μC) is released from rest 10 m from a 500 μC, what will be its speed when it is 0.3 m from this charge? A. 5,230 m/s B. 340 m/s C. 70 m/s D. 190 m/s
- 6. An electron is fired at 5.2x107 m/s between two electric plates. If the plates are 6.0 cm in length, have a separation of 2.0 cm, and a potential difference of 500 V, calculate the deflection displacement as it travels through the gap between plates. parallel platesA uniform electric field is created by two horizontal parallel plate electrodes of length 10 cm separated by a vertical distance d = 5 cm and held at a potential difference V = 250V. A beam of electrons is introduced between the two plates with a horizontal velocity v = 5 x 106 m/s. What is the deflection distance towards the positive plate when the electron beam leaves the electric field? Select one: a. 5.0 cm b. 3.5 cm c. 1.76 cm d. 8.8 mmDescribe your approach to determining the distance between the electron and proton in an atom if the potential energy U of the electron is known to be 14 eV. а. Use the law of conservation of energy. b. Use Coulomb's law. С. Use the definition of electrostatic potential energy U of one point charge q at position r in the presence of an electric potential. d. Use Newton's second law.
- 1.A parallel plate capacitor has square plates of side 8 cm and separated by a distance of 2 mm. (a) Calculate the capacitance of this capacitor. (b) If a 13 V battery is connected to the capacitor, what is the charge stored in any one of the plates? (The value of ɛo = 8.85 x 10-12 Nm2 C-2) 2.A beam of protons moves in a circle of radius 0.25 m. The beam moves perpendicular to a 0.30 T Magnetic field. (a) What is the speed of each proton? (b) Determine the magnitude of the centripetal force on each proton. The mass of a proton is mP = 1.67 x 10 27 kg and it has a charge of +e where e = 1.609x 10 19 C.1. A square with side length of 5.0 nm (nanometers) has an electron at each corner and a proton at the middle of the square. What is the change in potential energy as a function of moving the proton to the midpoint of a side of the square?