A Small Ball with a Mass of 40 G and a Charge

question 5

Multiple Choice

A small ball with a mass of 40 g and a charge of -0.3 $\mu$ C is suspended from the ceiling on a string.The ball is suspended above an insulating floor.If a second small ball with a mass of 50 g and a charge of 0.6 $\mu$ C is placed on the floor directly beneath the first ball and the tension in the string is 1.0 N,what is the distance between the first ball and the insulating floor?

• A)8.3 cm
• B)7.0 cm
• C)5.2 cm
• D)5.7 cm
• E)6.4 cm

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