A small glass bead has been charged to + 30.0 nC. A small metal ball bearing 2.60 cm above the bead feels a 1.80*10-2 N downward electric force. Part A What is the charge on the ball bearing? Express your answer with the appropriate units.

Question

Physics

Shane Hurst

24 September, 11:06

A small glass bead has been charged to + 30.0 nC. A small metal ball bearing 2.60 cm above the bead feels a 1.80*10-2 N downward electric force. Part A What is the charge on the ball bearing? Express your answer with the appropriate units.

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Answers (1)

Know the Answer?

Braedon Mahoney · Answer 1

The charge on the ball bearing 4.507 * 10^-8 C

Explanation:

From Coulomb's law

F = kq1q2/r²

make q2 the subject

q2 = Fr²/kq1

q2 = (1.8*10^-2 * 0.026²) : (9*10^9 * 30*10^-9)

q2 = 4.507 * 10^-8 C