Question

"Pilsents the andamental physical Charge carried by an 0-19 C. - whose magnitude is charge. 6. Sphere A has a mass of 4.2 x 10-2 kg and is tethered to a wall by a thin thread. Sphere A has an excess of 1.2 X 102 electrons. Sphere B has a deficit of 3.5 X 1012 electrons and is 0.23 m from sphere A (Figure 4). thread B + 0.23m → Figure 4 (a) Determine the angle between the thread and the wall. (b) Determine the tension in the thread. Forth has an electric field on its surface with an 7

Answer 1

Answer: lal Giver, m= 4.2x10 kg, charge on a sphere ix Q- ne, so QA = (1.2 X102) (-1.602 X10 9 C) = -1.92x107c, and Q8= (3.5%vol) C1-602x059c) = 5.61x107c. from figure, Tcaso = mg - and Tsino = F 1fe1 = 19x109Wm?) (192x107) (5.61X70*70) TCOSO IN Tsino (0.23 m) 2 [ where (Fel=kLQal la I and Ifel = 1.832 x162N g (4.2410 ²Kg) (9.8 m/15) > mg: 46.16 XO2N. Coulomb's law

Then, G is divided by call, T sind Tcos mg Glee other (1.83281021) I (41.16 85²) 0 = 2.54° (b) Using aso. Teoso-mg - To ng 41.16 815²N coso cos (2.54°) T- 41:58xioºn