Initially the sphere has 9 microcoulomb charge. But then some electrons are added to it. Hence we can find the final charge by adding both this charge as shown below:

A metal sphere has a charge of +9.0HC. What is the net charge after 9.1 x...
A metal sphere has a charge of +9.0HC. What is the net charge after 9.1 x 1013 electrons have been placed on it? Number Units
A metal sphere has a charge of +8.0 C. What is the net charge after 6.0 x 1013 electrons have been placed on it? A rod has a charge of -2.0 uC. How many electrons must be moved so that the charge becomes +3.0 C?
A metal sphere has a charge of +6.0 μC. What is the net charge after 6.0 × 1013 electrons have been placed on it? Report you answer in μC
A metal sphere has a charge of +8.2C. What is the net charge after 9.3 x 10^13 electrons have been placed on it?
Chapter 18, Problem X08 Your answer is partially correct. Try again. A metal sphere has a charge of +9.9HC. What is the net charge after 4.9 x 1013 electrons have been placed on it? Number :Units C the tolerance is +/-2%
14. A solid metal sphere of radius 0.30 m has a net charge deposited on it of -5.0 x 106 C. a. Determine the number of electrons that were added to the sphere. b. Determine the electric field inside the sphere due to the charge on the sphere. Support your answer. c. Determine the electric field at the surface of the sphere due to the charge on the sphere. Support your answer. d. If the sphere has a mass of...
QUESTION 3 3) A metal sphere A has a charge of-15.0 μC is in contact with a neutral identical sphere B. and then separated. Then, a number of 4.0 x 1012 protons have been added to each sphere. (p +1.6 x 10-19 C) a) b) What is the charge of each sphere after been separated? What are the sign and the magnitude of the new charge on each sphere after the protons were added?
Question 3 Touch In the figure, metal sphere A has 4 negative charge units and metal sphere B has 2 positive charge units. What is the charge state of the spheres after you touch thom O Sphere A has +2 charge and sphere B has 4 charge O Sphere A and sphere B each have -1 charge. O Sphere A has -2 charge and sphere B has 0 charge Sphere A and sphere B each have -2 charge. Question4 D)-are...
In a charging process, 1×1013 electrons are removed from one small metal sphere and placed on a second identical sphere. Initially both metal spheres were neutral. After the charging process the electrical potential energy associated with the two spheres is found to be −0.062 J. What is the distance between the two spheres? The value of the Coulomb constant is 8.98755×109 N·m2/C2 and the elemental charge is 1.6×10−19 C. Answer in units of m. Hard one
A sphere has a net charge of 8.01 nC, and a negatively charged rod has a charge of −5.97 nC. The sphere and the rod undergo a process such that 5.40 ✕ 109 electrons are transferred from the rod to the sphere. What are the charges of the sphere and the rod after this process? Qsphere,f = Qrod, f =