A Plastic Ball of Charge -5 NC Is Held 2 $\mu$

question 4

Multiple Choice

A plastic ball of charge -5 nC is held 2 cm above a glass bead of charge +5 nC at rest on a table.For the glass bead to leap up to the plastic ball its mass must be

• A)57 \(\mu\)g.
• B)65 \(\mu\)g.
• C)81 \(\mu\)g.
• D)98 \(\mu\)g.
• E)112 \(\mu\)g.

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