3 (1 points) (#865671) (Charge Properties, Electrical Properties} How many electrons must be removed from a neutral object to leave a net charge of 0.738 #07 Please enter a numerical answer below Accepted formats are numbers or \"e' based SClelttiflC notation e g 0 23,72,1e6, 5 23ers Enter answer here x 1012 electrons Question 4 (1 points) (#735346) {Charge Properties, Electrical Properties) A conducting sphere has a net charge of -4.8 x 10 18 C. Calculate the number of excess electrons on the sphere. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here excess electronsQuestion 7 (1 points) (#798609) {Electrical Force) A glass rod with a net charge of 0.567 uC and a small square of silk cloth with a net charge of -0.698 MC, are separated by 12.0 cm. What is the magnitude of the attractive force between the two charged objects? You may approximate both objects as point charges. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here N