If 1.28 ✕ 1020 electrons move through a pocket calculator during a full day's operation, how many coulombs of charge moved through it?

Problem 3: Three charges are located as shown in the figure, with values q = 4.9 x 10-16 C, 92 = -1.8 x 10-16 C, 93 = 6.75 x 10-16 C. The charges are separated by d7 = 2.3 × 10-6 m and dz = 1.4 x 10-6 m. 93 d, Otheexpertta.com Part (a) What is the force of g2 ong in the x direction, F,? Give your answer in newtons, and recall k= 8.988 x 10° N m2/C2. F= 1.5 * 10-10 F = 1.5E-10 Correct! Part (b) What is the force of q3 on q in the y direction, F,? Give your answer in newtons. Grade Summary Fy = 1.51 * 10-9 Deductions 2% Potential 98%

A red blood cell typically carries an excess charge of about −2.5×   10-12 C distributed uniformly over its surface. The cells, modeled as spheres, are approximately 7.5 μm in diameter and have a mass of 9.0×   10-14 kg.   (a) How many excess electrons does a typical red blood cell carry? (b) What is the surface charge density σ on the red blood cell? Express your answer in C/m2 and in electrons/m2. σ = C/m2 = electrons/m2

An object has an excess charge of - 2.4 * 10 ^ - 1 C. How many excess electrons does it have?

Raindrops acquire an electric charge as they fall. Suppose a 2.4-mm-diameter drop has a charge of +11 pC. In a thunderstorm, the electric field under a cloud can reach 15,000 N/C, directed upward. For a droplet exposed to this field, how do the magnitude of the electric force compare to those of the weight force?