Two Identical Particles, Each with a Mass of 4

question 102

Multiple Choice

Two identical particles, each with a mass of 4.5 μg and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 m/s at an instant when the distance separating the two is equal to 25 cm. How far apart will they be when closest to one another?

• A) 9.8 cm
• B) 12 cm
• C) 7.8 cm
• D) 15 cm
• E) 20 cm

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