b. The electric field midway between two equal but opposite point charges is 1,750 N/C, and the distance between the charges is 16 cm. What is the magnitude of the charge on each?
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- Let q 1 = 2 μC, q2 = -4 μC, q3 = = +3 μC, q4 = -5 μC, q5 = +9 μC.a. What is the net force on q 5 ?b. What is the electric field at the location of q 5 due to the other 4 charges?c. What would be the force on q 5 if you changed it to 7 μC?4. A particle with 4 nanoCoulomb charge produces an electric field with a magnitude of 2.0 N/C at a point. How far away is the point from the particle?Q7. Four point-charges are placed at the corners of a square, as shown in Figure 2. What is the magnitude of the net electric field at the center of the square? Take q = 1.0 µC and a = 2.0 cm. - q I -q ----> A) 1.3x108 N/C B) 6.4x10' N/C C) 2.5x108 N/C D) 1.8×108 N/C E) zero +q + ↑ a I I +q
- 1. Common static electricity involves charges ranging from nanocoulombs to microcoulombs. (a) How many electrons are needed to form a charge of −9.10 nC? electrons (b) How many electrons must be removed from a neutral object to leave a net charge of 0.520 µC? electrons 2. What net charge would you place on a 412 g piece of sulfur if you put an extra electron on 1 in 1012 of its atoms? (Sulfur has an atomic mass of 32.1.) 4. What is the repulsive force between two pith balls that are 10.0 cm apart and have equal charges of −39.0 nC?-------N 6.How far apart (in mm) must two point charges of 65.0 nC (typical of static electricity) be to have a force of 5.50 N between them? 7. a.What is the direction of this force (away from or toward the +6 µC charge)? away from the +6 µC chargetoward the +6 µC charge ---------mm A test charge of +9 µC is placed halfway between a charge of +6 µC and another of +7 µC separated by 17 cm. (b) What is the magnitude of the force (in N)…A point charge of 4.5 µC is 3.5 cm away from a charge of 1.5 µC. a. Identify the magnitude of the Coulomb force which 1 particle exerts upon the other. b. State whether the force is repulsive or attractive.2. Two charges are situated near point P. 9₁ = -2.5 μC and q2 = 3.5 μC. Find the electric field strength at point P. Note: For direction of the electric field, you can use one of the following: North, East, South, and West or Up, Right, Down, and Left P...... k 3.0 m r 91 + 2.5 m ¥1,2 92