1. A 9.0 x 10-12 C charge at point 1m away will have an electric field intensity of a. 0.801 N/C b. 0.081 N/C ç. 0.108 N/C

The electric field at 2.0 m from a strut charge has a magnitude of 80,000 N / C. Determine the intensity of the electric field at a distance of 4.0 m.   a. 40,000 N/C   b. 160,000 N/C   c. 320,000 N/C   d. 20,000 N/C

What is the magnitude of the electric field intensity at a point where a proton experiences an electrostatic force of magnitude 2.30 × 10-25 N₂ A. 1.44x 10-6N/C B. 3.68 x 10-¹2 N/C C. 1.44 x 10-¹2 N/C D. 3.68 x 10-6N/C (A) A B D C B D с

Two charges of 3.00x10-6 C and -1.25x10-6 C are placed at a separation of 20cm. a. Determine where a third charge should be placed on the line connecting the two charges so that it experiences no net force due to these two charges. b. Determine the acceleration of a proton located mid-way between the two charges. Thank you

1. In the following problems, you don't need to understand the physics to complete the questions. Focus on the equations. (a) The force of gravity, F, between two masses, m and M, separated by a distance r, is given by GmM where G is a constant. Write an equation of r in terms of other variables in the equation F= for F: r= GmM F (b) The electric force between two charges q=3-10-6 units and Q=-4·10¯6 units separated by a distance, d = 3.10-4 units, is given by F= kqQ d² I where k=9. 10⁹ units. Without using a calculator, calculate the F. F= -12x10 -5 Ⓡ√

1. Calculate the magnitude and direction of the electric field 2.1 m from a long wire that is charged uniformly with a linear charge density of λ= 3.9-10 ° C/m. Hint: You can assume that the wire is infinitely long. If the wire is infinitely long, what happens to the components of the electric field in the plane perpendicular to the z-axis in the figure? Which components of the electric field survive and which don't? 1 P AZ Z xvi X k N/C

13. A charge q = 5 µC is located at the coordinates (0, 4 cm) as shown below. What is the magnitude of electric field at point P, located at (3 cm, 0) due to q? A. 1.8×10³ N/C B. 1.8×104 N/C C. 1.8×105 N/C D. 1.8×106N/C E. 1.8×10¹ N/C 4 cm q=5μC 3 cm P

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19. If a=3.0 mm, b=4.0 mm, Q₁ = 60 nC, Q₂ = 80 nC, and q=32 nC in the figure, what is the magnitude of the electric force on q? a. b. c. d. e. 1.6 N 1.3 N 1.9 N 2.2 N 0.040 N ID: A 20. Consider an electric dipole. The size of the dipole is small relatve to a point P located at a distance z from the dipole where the electric field is E. At a distance 3 times larger, the electric field is C. 9 times weaker d. 3 times stronger a. 27 times weaker b. 3 times weaker

1. Four 10.0 μC charges are placed at the corners of a square that is 1.0 m on each side. What is the force on a fifth similar charge placed at the center of the square? a. 1.0 N b. 10.0 N c. 5.0 N d. 7.9 N e. 0.0 N