Find the net charge of a system consisting of 6.51 106 electrons and 8.67 106 protons. Group of answer choices 1.46 10^-15 C 5.46 10^-15 C 3.46 10^-13 C 2.46 10^-13 C

Three protons are in three corners of a square of side d=4.8•10^-6 m. What will be the magnitude of the net force on an electron put on the fourth corner of the square? Give your answer in newtons. Charge of electron= -1.6•10^(-19) C Charge of proton= 1.6•10^(-19) C

Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 1.90 pC, B = 6.50 pC, and C = -4.80 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC = 1 x 10-12 c.) Magnitude- Direction-

9. Four positive point charges are equal in magnitude and placed on the corners of a 2.00 m? square as shown in the figure below. Determine the magnitude of the net force acting on the point charges. +6.00 µc +6.00 µC 2.00 m +6.00 µC 2.00 m +6.00 µC

Two identical positive charges exert a repulsive force of 6.6 × 10−9 N when separated by a distance 3.9 × 10−10 m. Calculate the charge of each. The Coulomb constant is 8.98755 × 109 N · m2 /C2 . Answer in units of C. Answer in units of C.

An electron and a proton have charges of an equal magnitude but opposite sign of 1.60  10-19 C. If the electron and proton in a hydrogen atom are separated by a distance of 6.80  10-11 m, what are the magnitude and direction of the electrostatic force exerted on the electron by the proton? magnitude      ?N direction       down or up

An old fashioned computer monitor accelerates electrons and directs them to the screen in order to create an image. How much equal charge should be placed on the Earth and the Moon so that the electrical repulsion balances the gravitational force of 1.98×10^20N ? Treat the Earth and Moon as point charges a distance 3.84×10^8m apart.

Two point charges each with 0.15 CC of charge are 5.0×10−2 mm apart. Knowing that k is 9×10^9N⋅m^2/C  (the proportionality constant for Coulomb's law), find the force between the charges. Express your answer to two significant figures and include the appropriate units.

please help with b)

An object has a charge of -2.00 pC on it. How many electrons would you have to add/remove to make the charge become -5.00 pC?