Situation: A single electron accelerates between the cathode and the anode that has a potential difference of 2000 V. The charge of an electron is 1.6 x 10-19 C and its mass is 9.1 x 10-31 kg. 1. Describe what is happening to the atoms in the screen as they are hit by electrons. 2. Compute for the work done on the electron passing through a potential difference of 2000 V. Give your answer in joules.

An electron accelerates between the cathode and the anode. It passes through a potential difference of 2000 v. The charge on an electron is 1.6 × 10-19 C and the mass of an electron is 9.1 x 10-31 kg. Find the following: A. Describe what is happening to the atoms in the screen as they are hit by electrons. B. State the kinetic energy, in ev, of the electron when it hits the screen. C. Calculate the work done on the electron passing through a pd of 2000 V. Give your answer in joules. D. The work done on the electron becomes kinetic energy of the electron. Write down the formula for kinetic energy in terms of mass m and speed v. E. Using your answers to questions 3 and 4, find the speed of the electron. F. The anode is connected to the screen. State and explain what, if anything, happens to the speed of the electron as it passes from the anode to the screen. G. In 10 seconds, 6.0 × 10^17 electrons hit the screen. Calculate: (a) the charge hitting the screen in 10 seconds (the charge on…

An electron moving parallel to the x axis has an initial speed of 3.7 x 106 m/s at the origin. Its speed is reduced to 1.4 x 105 m/s at x = 2 cm. Calculate the electric potential difference 1. between the origin and x -= 2 cm. 2. A proton is released from rest in a uniform electric field whose magnitude is 5000 V/m. Through what potential difference will it have passed after moving 0.25 meters? How fast will it be going after it has travelled 0.25 meters?

The interior of a cell is measured to be 70mV below its surroundings. This is due to a layer of positive charge on the membrane's outer surface, and a layer of negative charge on the inner surface. The size of the separated charge is Q=1.2 x 10-13 C. What is the cell membrane's capacitance? a. 2.9x10^-3 F b. 1.7x10^-12 F c. 8.4x10^-15 F d. 5.8x10^11 F