Physics :

Two point charges QA and Q3 are located at the x-y coordinate position of (+5.0, 0.0) and (0.0, +4.0), respectively. Object A has a negative charge and object B has a positive charge. Which diagram correctly depicts the directions of the electric elds from each charge at the origin of the coordinate system? AI Fig.1 A Fig.2 A Fig.3 AI Fig.4 Question 10 10 pts The classic Millikan oil drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oil drops were suspended against the gravitational force by a vertical electric field. Consider an oil drop with a weight of 3.2 x 10-14N, if the drop has a single excess electron, find the magnitude (in N/C) of the electric field needed to balance its weight. Your should round your answer to an integer, indicate only the number, do not include the unit. + + + + microscope