Class Management I Help Chapter 20 Homework Begin Date: 1/12/2016 3:00 PM 1/2620
ID: 2000778 • Letter: C
Question
Class Management I Help Chapter 20 Homework Begin Date: 1/12/2016 3:00 PM 1/262016 11:59:00 PM End Date: 5/6/2016 12:00:00 AM Due Date: (5%)Problem 10: A Van de Graff generator has a 0.4 mC charge on its conducting sphere. i A 50% Part (a what is the magnitude of the electric field 2.7 m from the center of the terminal of the Van de Graaff, noting that the field is equivalent to that of a point charge at the center of the terminal? Give your answer inNIC 50% Part (b At this distance, what is the magnitude of the force that the field exerts on 1.9 HC charge on the van de Graaff's belt? Give your answer in N. Grade Summary Potential 1009. Late Work 75% 75% 7 8 9 Sin 4 5 6 Submissions cotano asino Attempts remaining: 3 1 2 3 atan0 acotano sinho per detailed view oDegrees Radians Submit Hint I give up!Explanation / Answer
(A)
E = kq/d2 N/C
k = 9x109 Nm2/C2, q = 14 x 10-5 C, d = 2.7 meter
E = 9x109 x 14 x 10-5 / (2.7)2 = 1.7 x 105 N/C
(B)
F = qE = (1.9x10-6)x(1.7x105)= 0.32 N