21 HW Mastering Physics

  12/11/2014 21 HWhttp://sessionmasteringphysicscom/myct/assignmentPrintView?assignmentID=3302247 1/7 21 HW Due: 11:59pm on Wednesday, December 10, 2014 You will receive no credit for items you complete after the assignment is due Grading Policy Exercise 212 Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloudThe maximum rate of charge flow in a lightning bolt is about ; this lasts for or less Part A How much charge flows between the ground and the cloud in this time? Express your answer using three significant figures  ANSWER: Correct Part B How many electrons flow during this time? Express your answer using three significant figures  ANSWER: Correct Exercise 2119 Three point charges are arranged along the  x  -axis Charge = +300 is at the srcin, and charge = -500 isat = 0200 Charge = -800 Part A Where is located if the net force on is 700 in the direction? ANSWER: 20,000C/s100    μ     s    = 200 Q     C      = 125×10 19