Two particles, each having a mass of 3.0 mg and having equal but opposite charges of magnitude 5.0 nC, are released simultaneously from rest when the two are 5.0 cm apart. What is the speed of either particle at the instant when the two are separated by 2.0 cm?

a. 2.1 m/s
b. 1.5 m/s
c. 1.8 m/s
d. 2.4 m/s
e. 3.2 m/s


B

Physics & Space Science

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An 8.00-? resistor is connected to a battery with internal resistance of 0.200 ?. If the terminal voltage across the battery is 9.00 V, what is the battery's emf?

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A galvanometer has an internal resistance of 100 ? and deflects full-scale at a current of 2.00 mA

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