A cathode-ray tube accelerates electrons through a 20 kV potential difference. To what speed are the electrons accelerated?
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A cathode-ray tube accelerates electrons through a 20 kV potential difference. To what speed are the electrons accelerated?
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- An electron is traveling at 5×105 m/s when it is 3 nm away from a proton. What is the speed of the electron if it escapes the proton to a location far away from it?How much work must be done on an electron to accelerate it from rest to a speed of 0.949c? Number i UnitsConsider an electron orbiting around a proton with an orbital radius of R=8.48⋅10−10R=8.48⋅10-10 m. What is the orbital frequency of the electron motion? Use me=9.11×10−31me=9.11×10-31 kg, e=1.6×10−19e=1.6×10-19 C, and k=9×109k=9×109 Nm2/C2. The frequency, f0 = Units . By how much would this frequency increase (assume the same orbital radius) if an external magnetic field of B = 0.5 T is applied to the system along the the electron axis of rotation? The increase in the frequency , Δf = Units .
- Chapter 37, Problem 043 How much work must be done to increase the speed of an electron from (a) 0.14c to 0.15c and (b) from 0.92c to 0.93c? Note that the speed increase is 0.01c in both cases. (a) Number 0.7653 Units keV (b) Number Units keVFor the following image V₁=65.9V, V₂=54.7V, and V3=43.5V. A proton's speed as it passes point A is 46115.0m/s and it follows the trajectory shown. What is the proton's speed at point B? A V₁ ¡B V2 V3What is the smallest value of B that can be set up at the equator to permit a proton of speed 10 m/s to circulate around the earth? (R = 6.4× 106 m, m = 1.67 × 10² kg).
- Question 17 please. the top of page 233 contains the second part of the question. ThanksA constant electric field accelerates a proton from rest through a distance of 1.20 m to a speed of 1.53 ✕ 105 m/s. The mass and charge of a proton are mp = 1.67 ✕ 10−27 kg and qp = e = 1.60 ✕ 10−19 C.) (a) Find the change in the proton's kinetic energy (in J). J (b)Find the change in the system's electric potential energy (in J). J (c) Calculate the magnitude of the electric field (in N/C). N/C