A point charge q₁ = +2.40 μC is held stationary at the origin. A second point charge q2 = -4.30 μC moves from the point x = 0.170 m, y = 0, to the point x = 0.260 m, y = 0.260 m. Part A What is the change in potential energy of the pair of charges? Express your answer with the appropriate units. ☐ μÅ ? xa a Хь • b X.10n AU = = Value Submit Units Previous Answers Request Answer × Incorrect; Try Again; 5 attempts remaining Part B How much work is done by the electric force on q2? Express your answer with the appropriate units. НА W Value Units ?

A small particle has charge -4.60 µC and mass 1.70x10-4 kg. It moves from point A, where the electric potential is VA = 300 V, to point B, where the electric potential VB = 820 V is greater than the potential at point A. The electric force is the only force acting on the particle. The particle has a speed of 6.00 m/s at point A. Part A What is its speed at point B? Express your answer in meters per second. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Electric force and electric potential. m/s Part B Is it moving faster or slower at B than at A? Faster Slower 圓

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Part A A +4.0 µC charge is 22 cm to the right of a -7.8 µC charge. Determine the potential at the midpoint between the two charges. Express your answer to two significant figures and include the appropriate units. µẢ Vmid = Value Units Submit Request Answer Part B Determine the direction of the electric field at the midpoint between the two charges. O to the left. O to the right. Submit Previous Answers v Correct Part C Determine the magnitude of the electric field at the midpoint between the two charges. Express your answer to two significant figures and include the appropriate units. µA ? Emid = Value Units

Part A How far must the point charges qi = 7.10 µC and q2 = -26.1 µC be separated for the electric potential energy of the system to be -166 J ? r = cm Submit Request Answer Provide Feedback Next >

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A uniform electric field of magnitude 7.8x105 N/C points in the positive z direction. Part A Find the change in electric potential energy of a 8.0-μC charge as it moves from the origin to the point (0, 6.0 m). Express your answer using one significant figure. IVE] ΑΣΦ AU = Submit Part B AU = Find the change in electric potential energy of a 8.0-μC charge as it moves from the origin to the point (6.0 m, 0). Express your answer using two significant figures. IVE] ΑΣΦ Submit Part C Request Answer AU = Submit Request Answer w ? Find the change in electric potential energy of a 8.0-μC charge as it moves from the origin to the point (6.0 m, 6.0 m). Express your answer using two significant figures. [5] ΑΣΦ Request Answer ? w ? J J J

Attached is question, multiple choice.

A 5.60 μF parallel-plate air capacitor has a plate separation of 4.50 mm and is charged to a potential difference of 300 V. Part A Calculate the energy density in the region between the plates, in units of J/m³. Express your answer in joules per cubic meter. VE ΑΣΦ U = Submit Previous Answers Request Answer ? X Incorrect; Try Again; 2 attempts remaining J/m³

Part A The work done by an external force to move a -5.60 µC charge from point A to point B is 1.50x10-3 J. If the charge was started from rest and had 4.72x10-4 J of kinetic energy when it reached point B, what must be the potential difference between A and B? Express your answer with the appropriate units. HẢ ? VB – VA = Value Units