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Q1 = +200 μC Q2 = -300 μC Q3 = +400 μC m3 = 0.100 kg

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1			Electric potential at the origin due to Q1 Need a Hint?
2			Electric potential at the origin due to Q2 Need a Hint?
3			The total electric potential at the origin due to Q1 and Q2 Need a Hint?
4			The amount of work required to move Q3 from very far away up to x = 0 Need a Hint?
5			The change in electrical potential energy of Q3 as it is moved from very far away up to x = 0 Need a Hint?
6			The electric potential energy of Q3 when it is at the origin Need a Hint?
7			The total amount of work done in assembling the collection of charges Q1, Q2 and Q3 Need a Hint?

If Q₃ is now released from rest (at the origin) it will travel along the negative x axis.

8			The change in Q3's electric potential in traveling from x = 0 to x = -1.00 m Need a Hint?
9			The work done on Q3 by the electric field of the two charges (Q1 and Q2) as it moves from x = 0 to x = -1.00 m Need a Hint?
10			Q3's kinetic energy when it is at x = -1.00 m Need a Hint?
11			Q3's speed at x = -1.00 m Need a Hint?

The figure below shows two parallel conducting plates separated by 10 cm and connected to a 20.0 volt battery. It also shows the 5 V, 10 V and 15 V equipotential lines. You also have a test charge Q_o = 2.00 C and m_o = 2.00 × 10^-3 kg

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12			Magnitude of the electric field at A. Need a Hint?
13			The difference in electric potential between A and B Need a Hint?
14			The amount of work done to move Qo from A to B Need a Hint?
15			The Electric Potential Energy of Qo at point B Need a Hint?
16			Magnitude of the electric field at D Need a Hint?
17			The amount of work required to move Qo from B to D Need a Hint?
18			The electric potential energy of Qo at point D Need a Hint?

If Q_o is now released from rest at point D determine the following:

19			Work done on Qo by the electric field as it moves from D to C Need a Hint?
20			Change in electric potential energy of Qo as it moves from D to C Need a Hint?
21			Change in kinetic energy of Qo as it moves form D to C Need a Hint?
22			Speed at which Qo slams into the negative plate Need a Hint?

The figure below summarizes a sequence of events involving a capacitor, battery, and a slab of dielectric material.

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(a) The capacitor is connected to the battery and charged (b) While the battery is connected, a dielectric slab is inserted (c) The battery is disconnected (d) The dielectric is withdrawn

23			Capacitance of the capacitor in case (a) Need a Hint?
24			Charge on each plate of the capacitor in case (a) Need a Hint?
25			Electric field between the plates of the capacitor in case (a) Need a Hint?
26			Energy stored in the capacitor in case (a) Need a Hint?
27			Capacitance of the capacitor in case (b) Need a Hint?
28			Charge on each plate of the capacitor in case (b) Need a Hint?
29			Electric field between the plates of the capacitor in case (b) Need a Hint?
30			Energy stored in the capacitor in case (b) Need a Hint?
31			Capacitance of the capacitor in case (d) Need a Hint?
32			Charge on each plate of the capacitor in case (d) Need a Hint?
33			Electric field between the plates of the capacitor in case (d) Need a Hint?
34			Energy stored in the capacitor in case (d) Need a Hint?