Question 1 (1 point) Determine the electric force between two very small particles in a vacuum if they have charges of 3.75 pC and -5.25 pC and their centres are 4.45 um apart. -8.95E-3 N 8.95E-3 N O -3.98E-8 N 3.98E-8 N Question 2 (1 point) A negativelycharged rod is brought close to (but does not touch) two neutral conductive spheres that are in contact with each other but insulated from the ground. If the two spheres are then separated, what kind of charge will be on the spheres? The spheres do not get any charge The sphere near the charged rod becomes negative and the other one becomes positive ()Both Spheres become negative O The sphere near the charged rod becomes positive and the other one becomes negative Both spheres become positive Question 3 (1 point) If the force between an electron and a proton in a vacuum is -1.40E-22 N, how far apart are they? 3.216+6 m 1.65E-6 m 1.54 m 1.28E-3 m Question 4 (1 point) You decide to charge an electroscope flask by induction, so you bring a positively charged rod next to the flask but don't touch it. You then ground the ball at the top. Which charges leave the electroscope flask, if any? Negative charges, because they are located at the ball, closer to where the flask is being grounded Negative charges, because negative charge is the only kind that can travel (in the form of electrons) Positive charges, because they want to spread out as much as possible and aren't kept by being attracted to the rod that is nearby No charges leave or enter, because the flask is already electrically neutralQuestion 5 (1 point) Two tiny particles carrying like charges of the same magnitude are 1.0 mm apart. If the electric force on one of them is 5.0 N, what is the magnitude of the charge on each of these particles? 2.4E-5 C 4.5E-4 C 4.5E4 C 2.4E-BC 2.4E-2C Question 6 (1 point) Determine the electric field strength in a vacuum at a distance of 4.55 um from an electron. 1.12E-17 N/C towards the electron 3.17E-4 N/C towards the electron 69.6 N/C towards the electron 69.6 N/C away from the electron Question 7 (1 point) A electron placed in an electric field will experience a force ... (fill in the blank) ... electric field O perpendicular to the O opposite in direction to the O In the same direction as Question 8 (1 point) Electric field is a vector. O True False Question 9 (1 point) Determine the change in the electric field strength if the distance from a small charge is doubled. O Half Quarter Double Quadruple