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- A uniform electric field is directed parallel to the +y-axis. If a positive test charge begins at the origin and moves upward along the y- axis, how does the electric potential vary, if at all? O The electric potential will increase with increasing y. O Too little information is given to answer this question. O The electric potential will decrease with increasing y. O The electric potential will remain constant with increasing y.Part A A 2.0-cm-diameter parallel-plate capacitor with a spacing of 0.50 mm is charged to 200 V. What is the total energy stored in the electric field? Express your answer in joules. Πνα ΑΣφ U = J Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the energy density? Express your answer in joules per meter cubed. Vο ΑΣφ U = (m3Part A A dust particle with mass of 5.9x10-2 g and a charge of 1.6x10-6 C is in a region of space where the potential is given by V(z) = (1.2V/m²)a? – (3.4V/m)a If the particle starts at 1.6 m, what is the initial acceleration of the charge? Express your answer using two significant figures. nν ΑΣφ -- |7.7. 10-4 m/s? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
- Item 15 A parallel-plate capacitor is charged to an electric potential of 340 V by moving 3.45×10¹6 electrons from one plate to the other. Part A How much work is done in charging the capacitor? W = Submit —| ΑΣΦ Request Answer ? JAt a certain distance from a point charge, the Part A potential and electric-field magnitude due to that charge are 4.98 V and 16.2 V/m, respectively. (Take V = 0 at infinity.) What is the distance to the point charge? Express your answer with the appropriate units. ? d = Value Units Part B What is the magnitude of the charge? Express your answer with the appropriate units. μΑ ? = b Value UnitsParticles A, B, C, and D in (Figure 1) each carry a charge of magnitude 1.0 nC. Express your answer with the appropriate units. U = 0 J Submit Previous Answers Part C Correct Calculate the electric potential energy for the charge distribution in this 3.0-m square if B and C are positive and A and D are negative. Express your answer with the appropriate units. ΜΑ ? U = Value Units Submit Request Answer <1 of 1 Part D Calculate the electric potential energy for the charge distribution in this 3.0-m square if A and C are positive and B and D are negative. Express your answer with the appropriate units. Figure A+ +B HA ? U = Value Units
- The electric potential in a region of space is V = 300V-m, where and y are in meters. √z²+y² Part A What is the strength of the electric field at (x, y) = (2.9m, 1.3m)? Express your answer in volts per meter. E= Submit Part B 0= V=| ΑΣΦΑ Submit 4 Request Answer IVE ΑΣΦ What is the direction of the electric field at (x, y) = (2.9m, 1.3m)? Give the direction as an angle ccw from the positive x-axis. Express your answer in degrees. ? Request Answer V/m ? ºccw from the positive z-axisPart A What is the electric potential at this point? At one point in space, the electric potential energy of a 15 nC charge is 51 µJ. Express your answer with the appropriate units. НА V = Value Units 9 This unit is not recognized. See the list of acceptable units. No credit lost. Try again. Submit Previous Ansswers Request Answer Part B If a 25 nC charge were placed at this point, what would its electric potential energy b Express your answer with the appropriate units. U = Value Units Submit Request Answercan u help with part c asap plz
- A 15.0 nC charge is at x = 0cm and a -1.2 nC charge is at x = 7 cm . Part A At what point or points on the x-axis is the electric potential zero? Express your answer using two significant figures. If there is more than one answer, give each answer separated by a comma. Xo = cm Submit Request AnswerFigure 9 3.0 cm 14.0 cm 2.0 nC 2.0 nC 1 of 1 > Part A What is the electric potential at the point indicated with the dot in (Figure 1)? Suppose that q = -1.4 nC. Express your answer with the appropriate units. V = Submit HÅ Value Provide Feedback Request Answer 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