Consider a positive charge Q₁ of magnitude 7.5 µC fixed at the origin with another positive charge Q₂ of magnitude 7.5 µC moving near it. Charge Q₂ has a mass of 7 g. Where applicable, let the potential energy be zero when charges are very far apart from each other. Hint a. What is the potential energy of Q2 when it is 3.4 cm from Q₁? PEQ2 = b. If Q2 is released from rest at 3.4 cm from Q₁, how fast is it moving when it reaches 8 cm from Q₁? Hint for (b) VQ2 J. m/s.
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- Two point charges q, = 2.2 nC and q2 = -1.5 nC are 13 cm apart. Point A is midway between the charges and point B is 12 cm from q, and 5 cm from q2. Calculate: a. the electric potential at point A and at point B b. the work done by the electric field on a charge of q3 = +3.6 nC that moves from A to B %3DQuestion 2: #72 a. What is the electric potential at point A in Figure below? b. What is the potential energy of a proton at point A?A point charge q₁ = 3.90 nC is placed at the origin, and a second point charge q2 = -2.95 nC is placed on the x-axis at x = +20.0 cm. A third point charge q3 = 2.10 nC is to be placed on the x-axis between q₁ and 92. (Take as zero the potential energy of the three charges when they are infinitely far apart.) ▼ Part A What is the potential energy of the system of the three charges if q3 is placed at x = + 11.0 cm ? V—| ΑΣΦ U= 9.5 107 8 Submit Part B X Incorrect; Try Again ● x = 7.62 cm Previous Answers Request Answer ✔ Correct Where should q3 be placed between q₁ and q2 to make the potential energy of the system equal to zero? Previous Answers ? J
- What is the magnitude of the work done if 3.0 C is transported between two points with a potential difference of 90 V? a. 270 J b.30 J c.90 J d.180 J3a. What is the potential energy U of this lightning bolt? U = 310 Joules of the square? Find 30 (1.0x10) 3b. If all this energy where to be converted to kinetic energy, what would be the speed of a m = 1000 kg car. Vf = r16 = 34 = m/s 16. These charges are numbered as: raw the re Redraw the rectangle with the actual charges (evaluate 2q1, 492, etc.) 16a. What is the distance between the indicated pairs of charges. Find these in meters. r24 = r26 = 15 = 35 = 1 2 3 MI 4 5 6 ainT 16b. Starting with all the charges at ∞, what is the potential at the upper left corner, and how much work is done to put the charge at the upper left corner? V₁ = 05 P278 Volts W₁ = Joules V3 = V13 + V23 = | srpC = 10-12 C on m 16c. What is the potential at the location of 2, due to the previous charges? How much work is done to bring in the 2nd charge? Make sure you use the correct distance. V₂ = V12 = Volts W₂ = 16d. What is the potential at the location of 3, due to the previous charges? How much work is…An electron (m = 9.1 x 10-31 kg, q = -1.6 x 10-1⁹ C) in the picture tube of a TV is accelerated from rest through a potential difference of AV = 5000 V. What is the final speed of the electron? CQ1: Which of the following is true? A) The electron accelerates from a region of lower potential to a region of higher potential (V, > V₁). B) The electron accelerates from a region of higher potential to a region of lower potential (Vƒ < Vj). C) There's not enough information to determine whether A or B is true.
- A proton has an initial speed of 5.0×105 m/s. Please give a correct/clear explanation of all constants or values used to solve each part: a> What potential difference is required to bring the proton to rest? Express your answer using two significant figures. b>What potential difference is required to reduce the initial speed of the proton by a factor of 2? Express your answer using two significant figures. c>What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2? Express your answer using two significant figures.Four-point charges are on the rim of a circle of radius 10 cm. The charges are (in μC) +0.50, +1.5, −1.0, −0.50. If the electrical potential at the circle’s center due to the +0.5 charge alone is 4.5 × 104 V, what is the total potential at the center due to the four charges combined? a. 18×104 V b.-4.5×104 V c. zero d. +4.5 × 104 VA 42.0-nC charge is placed at the origin and a 74.0-nC charge is placed on the +x-axis, 2.20 cm from the origin. a. What is the electric potential at a point on the +x-axis 3.40 cm from the origin? b. How much work does it take for an external agent to move a 45.0-nC charge from a point on the +x-axis, 3.40 cm from the origin to a point halfway between the 42.0-nC and 74.0-nC charges?
- A line of charge with a non-uniform charge density λ=ay, where a=−10 nC/m2 lies along the y axis with one end at the origin and the other at y=h, where h=0.5 m. What is the total charge? What is the electric potential of this line charge at point P?= A point charge Q1 = +5.8 µC is fixed in space, while a point charge Q2 = +2.8 nC, with mass 6.3 µg, is free to move around nearby. Calculate the electric potential energy of the system, in joules, when Q2 is located 0.42 m from Q₁. If Q2 is released from rest at a point 0.42 m from Q₁, what will be its speed, in meters per second, when it is 0.79 m from Q₁? m/sIn a particular region of space, the electric potential is given by V = -7x²z+5xyz. What is the electric field in the region? Give x, y, and z components of the electric field vector E below. #3 Hint a. E₂ = b. Ey = c. E₂= Question Help: Message instructor Submit Question 80 F3 E D C S4 $ 4 F4 R F % 5 V F5 T G ^ 6 MacBook Air B F6 Y H & 1 7 F7 * CO 8 DII F8 UI U 1 J N M ( 9 K F9 0 I ) 0 L F10 P V ( F11 { ۔ [