Question

Two spherical objects are separated by a distance of 1.07 x 102m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 1.63 x 10-20 N. How many electrons did it take to produce the charge on one of the objects? Number Units

Answer 1

= 1.6301020N 6 =) q? = 0.0 2073 X 10 110-16 F = K2,92 9x10?X(-9)X1-9) 11.07x16 10-3)2 q? = 1.63x10-20x1.1449 x lo 9x109 0.20738 16-17 q=10.0207381016 = 0.143978164 c since, we know q = (number of e) x electronic charge le q=nxe 0.14397 X10-4 1.6 x 10-19 n=0.0899 X10'S 8.99 X10'3 Hence, 8.99 x 1013 no o. of es required to produce ) n the given amount of charge.