5. How much work is required to move a -40uC charge from an electric potential of -100V to 300V? (B) If the charge accelerates from rest, what is the final speed if it has a mass of 0.05 grams?

EVALUATION AND ENRICHMENT (Calculation of the Total Electric Potential): 1. Have the students calculate the total electric potential at the center of: a. A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints; b. An equilateral triangle of side length 1.0 m with alternating +1-C, –1-C, and +1-C charges placed at its vertices; c. A square of side length 1.0 m with alternating +1-C, –1-C, +1-C, and –1-C charges placed at its vertices 2. How did your answers in No. 1 compare with you electric field calculations for similar configurations.

HANCE-PHY 1800, section 1, Spring 2023 | WebAssign A particle with an electric charge of q= 6.8 μC is locared in an electric field at a position where the electric potential is V=-5.7e 05 V. What is the particle's potential energy? U= 2. ENERGY CALCULATIONS-WORK A proton moves 5 cm on a path in the direction of a uniform electric field of strength 4.4 NIC. How much work is done on the proton by the electrical field? W= J 3. ENERGY CALCULATIONS KINETIC ENERGY An electron in a cathode ray tube is accelerated through a potential difference of 4 kV. What kinetic energy does the electron gain in the process? K= 4. ENERGY CALCULATIONS CONSERVATION OF ENERGY Two protons approach each other from a great distance along a path connecting their centers. If the initial speed of each proton is 423 m/s, how close will the protons come to each other before they are set away)

13. The electron in a CRT are accelerated through a potential difference of 30 kV. (a) Do the electrons move from a region of high potential to a region of low potential, or vice versa? (b) What is the change in kinetic energy of one of the electrons? (c) If the initial speed is very small, what is the final speed of the electron?