Question

How much work must we do on an electron to move it from point A, which is at a potential of +50V, to point B, which is at a potential of -50V, along the semicircular path shown in the figure? Assume the system is isolated from outside forces (e = 1.60 times 10^-19C) 1.60 times 10^-17 J -1.60 times 10^-17 J 1.6 J -1.6 J This cannot be determined because we do not know the distance traveled. If an electron is accelerated from rest through a potential difference of 1500V, what speed does it reach? (e = 1.60 times 10^-19 C, m_electron =9.11 times 10^-13 kg) 1.9 times 10^7 m/s 1.1 times 10^7 m/s 2.3 times 10^7 m/s 1.5 times 10^7 m/s A portion that is initially at rest is accelerated through an electric potential difference of magnitude 500V. What speed does the proton gain? (e 1.60 times 10^-19C, m_proton =1.67 times 10^27 kg) 1.1 times 10^5 m/s 2.2 times 10^5 m/s 9.6 times 10^5 m/s 3.1 times 10^-31 m/s How much work is needed to carry an electron from the positive terminal to the negative terminal of a 9.0-V battery. (e = 1.60 times 10^-19 C, m_electron = 9.11 times 10^-31 kg) 9.0 J 14.4 times 10^-19 J/C 1.6 times 10^-19 J 14.4 times 10^-19 17 times 10^19 J A sphere with radius 2.0 mm carries a +2.0 mu C charge. What is the potential difference, V_B - V_A, between point B, which is 4.0 m from the center of the sphere, and point A, which is 6.0 m from the center of the sphere? (k = 1/4 pi 0 = 9.0 times 10^9 N m^2/C^2) -1500 V -0.63 V 1500 V 170 V Two 3.0 mu C charges lie on the x-axis, one at the origin and the other at 2.0 m. What is the potential (relative to infinity) due to these charges at a point at 6.0 m on the x-axis? (k = 1/4 pi 0 = 9.0 times 10^9 N m^2/C^2) 3400 V 9000 V 14,000 V 11,000 V

Answer 1