Question 42 Two point charges of +1.0 μC and -2.0 μC are located 0.50 m apart. What is the minimum amount of work needed to move the charges apart to double the distance between them? (k=1/4x0=8.99 x 109 Nm²/C2) None of the given choices. O +36 mJ 0 mJ -18 mJ +18 mJ 2 pts -36 mJ Question 41 An electron is released from rest at a distance of 9.00 cm from a proton. If the proton is held in place, how fast will the electron be moving when it is 3.00 cm from the proton? (mel =9.11 x 10-31 kg, e=1.60 x 10-19 C, k=1/4meo=8.99 x 109 N-m²/C2) O 4.64 x 105 m/s 1.06 x 103 m/s 106 m/s 130 m/s O None of the given choices. O 75.0 m/s 2 pts
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