How much work must we do on an electron to move it from point A, which...
Question 9 1 pts 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 -50 V, along the semicircular path shown in the figure? Assume the system is isolated from outside forces. (e-1.60 × 10-19 C) +50V -50V O 1.6 1.60x 10-17 -1.60x 10-17 O-1.6J This cannot be determined because we do not know the distance traveled
An electron is carried from the positive terminal to the negative terminal of a 9 V battery. How much work is required in carrying this electron? A) 17×10-19 J B) 9 J C) 14.4×10-19 J/C D) 14.4×10-19 J E) 1.6×10-19 J
Suppose that in an electron gun, electrons are emitted from a hot filament at point f and are accelerated by an electric field to an opening at o, as shown. The charge on an electron is (-e) where e = 1.6 times 10^-19 C. (a) If the voltage (same as electric potential) at point f is - 280 Volts, what is the potential energy of an electron at f? (b) The electrons come off the filament with very low velocity,...
An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C. (a) What is the relativistic kinetic energy (in joules) of the electron? (b) What is the speed of the electron? Express your answer as a multiple of c, the speed of light in a vacuum.
An electron (mass m = 9.11 x 10-31 kg, charge e = 1.6 x 10-19 C) are accelerated from rest through a potential difference V = 450 V and are then deflected by a magnetic field (B = 0.4 T) that is perpendicular to their velocity. The radius of the resulting electron trajectory is:
In the figure three point charge q)1 = +3.0 mu C q_2 = +2.50 mu C and q_3 = -3.50 mu C. The electric potential (in V) at point P is: a) 2250.0 b) 33750 c) 2812.5 d) 562.5 What is the speed of a proton line m/s) that has been accelerated from rest through a potential difference of 334 times 10^3 V? a) 1.6 times 10^6 b) 4.0 times 10^5 c) 8.0 times 10^5 d) 1.2 times 10^6 If...
If an electron is accelerated from rest through a potential difference of 12.0 kV, what is its resulting speed? (e = 1.60 × 10-19 C, k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2, mel = 9.11 x 10-31 kg). (Give your answer to the nearest km/s).
0.91 nm 2.7 nm D | Question 25 4 pts A 2.0 eV electron is incident on a o.20-nm barrier that is 5.67 eV high. What is the probability that this electron will tunnel through the barrier? (1 ev 1.60 10-19 J, m 9.11 10-31 kg. h- 1.055 x 1034 J s, h 6.626 x 1034 j .s) 2.0 x 10-2 1.5 x 10-3 9.0 10-4 1.2 10-3 1.0 x 10-3 0.91 nm 2.7 nm D | Question 25 4...
An electron in the beam of a TV picture tube is accelerated by a potential difference of 1.92 kV . Then it passes through a region of transverse magnetic field, where it moves in a circular arc with a radius of 0.186 m . What is the magnitude of the field? Use 9.11×10−31 kg for the mass of an electron and 1.60×10−19 C for the magnitude of the charge on an electron.
If 5 J of work is needed to move a - 0.1 C of charge, then the magnitude of potential difference is " " Volts A uniform electric field, with a magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 m? A stationary electron is accelerated through a potential difference of 500 V. What is the velocity of the...