. V PartA Suppose you operate a GOW lamp continuously for 1 week when the power utility rate is 8lkWh Find the cost. Express your answer to two signicant figures and include the appropriate units. .AdJr'O-t' Ohm's law: 1 = V Part A R When you touch your fingers (resistance 1000 $2) to the terminals of a 9.0-V battery, find the current moving through your fingers. Express your answer to two significant figures and include the appropriate units. HA ? I = Value UnitsPart A Coulomb's law: F = / 4192 Two point charges each with 0.13 C of charge are 9.0x10-2 m apart. Knowing that k is 9 x 109 N . m /C2 (the proportionality constant for Coulomb's law), find the force between the charges. Express your answer to two significant figures and include the appropriate units. HA ? F = Value UnitsV Part A Power = IV Calculate the power of a hair dryer that operates on 150 V and draws a current of 15 A Express your answer to two significant figures and include the appropriate units. HA ? P = Value Units_ V PartA The total charge that an automobile battery can supply without being recharged is given in ampere hours. Atypical 12V battery has a rating of 60 . . . amperehours (60 A for 1 11,30 A for 2 h. and so If each of the two headlights draws 3 A, find the time that your battery Wlll go dead. on). Suppose that you forget to turn offthe headlights _ _ Express your answer to two significant figures and include the appropriate units. in your parked automobile. $18M)? t = Paine Units Consider a circuit with a main wire that branches into two other wires. If the current is 10 A in the main wire and 4 A in one of the branches, how much current is in the other branch? Express your answer as an integer and include the appropriate units. HA ? Value Units