Question 1 U (x 10'12 J) 4 r (fm) 0 20 40 The figure provided shows the potential energy of a proton, q = +e, and a lead nucleus, q = +82e. If a proton is red toward a lead nucleus from a large distance away. how much initial kinetic energy does the proton need to reach a turning point 20.0fm from the nucleus? 0 2.00x10'12J O 3.00x10'12J 01.00x10'12J O 4.00x10'12J Question 2 A capacitor with plates separated by 0.0180 m is charged to a potential difference of 6.50 V. All wires and batteries are then disconnected, and the two plates are pulled apart to a new separation distance of 0.0360 m. What is the potential difference after the increase in separation? 0 3.25v O 6.50V O 26.0V O13.ov Question 3 f" N A [++;' a Q c \\.__/ Two charges are separated as shown in the figure. At which location or locations is the electric potential equal to zero? Keep in mind that the more + or - signs indicates more charge. OAandB OBandC OAandC OA