State which of the following statements are true and which are false. Give reasons for your answers. a) b) If you rub a children's balloon on a cat, it will then stick to the cat. This is an electrostatic effect. A galvanometer can be converted to a voltmeter by adding a large resistance in parallel to the galvanometer. Radioactive decay is predictable, so that e.g. a uranium atom will decay when it is 4 billion years old. c) d) e) Kinetic energy KE = 1½mv² is just a first approximation from E = mc² = ymoc² Sharp lines in the emission spectra of a gas discharge lamp are due to excited electrons falling back to lower states.

II. Problem Solving. Show your solutions. Box your final answer. 1. A water heater has a resistance of 502 and takes 15A during operation. If it is in service on the average of 45minutes per day, how many kWh of energy will be consumed for 2 weeks? 2. Two particles with charges of 5 uC and 8µC attract each other with a force of 65mN. Determine the separation distance between the two particles. 3. What separation distance is required if the attractive force between an electron and a proton is 50N? 4. The distance between two identical charges is 20cm and experiencing 50kN of force. Find the value of the charges. 5. A sphere has a negative charge of 640nC. Approximately how many electrons must be removed to make the sphere neutral? 6. How much electrical energy in kWh is delivered to an electric motor during a 48 minutes' operation from a 220v source if it draws 12A of current? If Meralco takes Php12.00 per kWh, how much is the electric bill cost for 1 month? Assume 1 month = 30 days.

An electron is fired at a speed v 4.3 x 10 m/s and at an angle 8 = 39.7 between two parallel conducting plates as shown in the figure. If s 1.7 mm and the voltage difference between the plates is AV= 99.8 V, determine how close, w. the electron will get to the bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor. Round your answer to 6 decimal places.

Help please, Show your complete (step-by-step) analysis and solution, with the appropriate equations and/or diagrams. Thank youu!   2. Given a set of 6 (six) 1.5 -V cells. Show by means of a diagram how you would connect the four cells to obtain a total voltage of: a) 3 V b) 4.5 V Indicate where a voltmeter should be connected in order to read the total voltage.