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1. An electron with an initial speed of 5.40×10^5 m/s is brought to rest by an...

1. An electron with an initial speed of 5.40×10^5 m/s is brought to rest by an electric field.

Part A: Did the electron move into a region of higher potential or lower potential?

Part B: What was the potential difference that stopped the electron? Express your answer with the appropriate units.

2. You are given the equation used to solve a problem:
(1/3μF+1/6μF)^−1+C=4μF

Part A: Select the correct realistic problem for which this is the correct equation.

What capacitor should be placed in series with 3 μF and 6 μF capacitors that are in parallel so that the equivalent capacitance is 4 μF?
What capacitor should be placed parallel to 3 μF and 6 μF capacitors that are in series so that the equivalent capacitance is 4 μF?
What capacitor should be placed parallel to 3 μF and 6 μF capacitors that are in parallel so that the equivalent capacitance is 4 μF?
What capacitor should be placed in series with 3 μF and 6 μF capacitors that are in series so that the equivalent capacitance is 4 μF?
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