Point charges of +2 µC each are placed at three corners of a square whose side is 0.4 m. If a point charge of 1 µC is placed at the fourth corner, what will be the force on the 1 µC charge ?
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- Three conductors of very thin radius and indefinite length are positioned in a triangular orientation as shown in the figure. They are charged up to a density of +1μC/m. 5m 5m 5m (a) A charge of -2μC is placed inside the triangle. Calculate the position where it should be placed, such that the force on the charge due to the three conductors is zero? (b) If a charge is placed 6m directly below the top conductor, what is the electric field intensity experienced by that charge?A point charge Q is placed at the origin. A second charge, 2Q, is placed on the x- axis at x = -3.0 m. If Q = 70 µC, what is the magnitude of the electrostatic force on a third point charge, - Q, placed on the y axis at y = +4.0 m?A positive charge of 9 µC exerts and attractive force of 1 N on an unknown charge 0.8 m away. The unknown charge in µC:
- Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are 9₁ = 5.55 μC, 92 = 1.26 μC, and 93 = -2.23 μC. Marble q₁ is a distance ₁ = 3.00 cm to the left of the marble 92, while marble q3 is a distance r3 = 2.00 cm to the right of the marble 92, as shown. Calculate the magnitude of the electric field a distance r = 1.00 cm to the left of the center marble. N/C 91 Additional Materials eBook ---Select--- ✓ 11 observation point 9₂ 13 ➤ Another marble is placed 1 cm to the left of the middle marble. If this new marble has a charge of 3.66 μC, calculate magnitude and direction of the force on it. magnitude N direction 93 -7₂ = 0mThree charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are q1 = 6.20 µC, q2 = 1.01 µC, and q3 = −2.14 µC. Marble q1 is a distance r1 = 3.00 cm to the left of the marble q2, while marble q3 is a distance r3 = 2.00 cm to the right of the marble q2, as shown. Calculate the magnitude of the electric field a distance r' = 1.00 cm to the left of the center marble. What is the electric field due to each individual marble? How do you find the total or "net" electric field when you have several electric fields? Another marble is placed 1 cm to the left of the middle marble. If this new marble has a charge of −3.62 µC, calculate magnitude and direction of the force on it.A +5 nC point charge and a -10 nC point charge are 0.02 m apart. (a) What is the strength of the Coulomb force on the +5 nC charge? (b) What is the strength of the Coulomb force on the -10 nC charge? (c) Is the -10 nC charge attracted to or repelled by the +5 nC charge (d) If the distance between the charges is doubled to 0.04 m, what is the force on the +5 nC charge now?
- A glass rod with a charge of + 15.6 nC is held 2.50 cm from a piece of wool that is oppositely charged. If the attractive force between the glass rod and wool is - 3.50 X 10 -3 N, what is the charge, in nanoCoulombs, on the piece of wool ? (Ans: - 15.6 nC)Static charges common with humans range from nano- to micro-coulombs. How many excess electrons are needed to create a net charge of -500 nC? If a human has an excess of 1.25 x 1012 electrons, what is his/her net charge in microcoulombs?You hold a ruler that has a charge on its tip 3.80 cm above a small piece of tissue paper to see if it can be picked up. The ruler has –10.0 µC of charge. The tissue paper has 5.00 g of mass. What is the minimum charge required to pick up the tissue paper?
- Tthree point charges, Q1 = 18.4 µC, Q2 -33.6 μC, and Q3 = 87.3 μC are positioned at three corners of a square as shown in the figure. A fourth point charge is located at the open corner at point A with a charge of QA = 15.5 μC. The square has height y of 40.1 cm and width x of 40.1 cm. Q, + Calculate the magnitude F of the net force on the charge at point A. 71.1 F = Incorrect y x A + Q3 NA metal sphere has a charge of -7.86 nC and an additional 2.43 x 109 electrons are added. What is the final charge of the sphere? Please give your answer in nC, 1 nC = 10-9 C.Four identical metal spheres have charges of qA = -8.0 μC, qb=-2.0 μC, qc=+5.0 µC, and qp=+12.0 µC. (a) Two of the spheres are brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 μC? A and C V (b) In a similar manner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 µC? A+B+D B+C+D A+B+D A+C+D A+B+C N = Number harge on each of the three separated spheres in part (b) is +3.0 µC. How many electrons would have to be added to one of to make it electrically neutral? i Units