Three point charges are located in free space along the x-axis. A positive charge of +2 μC is located at x = 0, a negative charge of -3 µC is located at x = 3 m, and a positive charge of +4 µC is located at x = 6 m. a. Will q1 and q2 attract or repel? Blank 1 b. Will q1 and q3 attract or repel? Blank 2 c. What is the direction of the electrostatic force acting on q1 due to q2? (north, south, east, or west) Blank 3 d. What is the direction of the electrostatic force acting on q1 due to q3? (north, south, east or west) Blank 4 For the following questions, convert your answer into PROPER SCIENTIFIC NOTATION and round the coefficient to two decimal places.(e.g. 5.43 x 10²2: 5.43 is the coefficient) What is the magnitude of the electrostatic force on q1 due to q2? Blank 5 x10^Blank 6 N What is the magnitude of the electrostatic force on q1 due to q3? Blank 7x10^Blank 8 N Calculate the net electric force on the positive charge at x = 0 due to the other two charges: Blank 9 x 10^Blank 10 N

An electric dipole is formed from two charges, tq, spaced 1.50 cm apart. The dipole is at the origin, oriented along the y-axis. The electric field strength at the point (x, y) = (0 cm, 10 cm) is 380 N/C. Part A What is the charge q? Give your answer in nC. Express your answer in nanocoulombs. ▸ View Available Hint(s) q= Submit Part B D] ΑΣΦ Submit μA E = Value What is the electric field strength at the point (x, y) = (10 cm, 0 cm) ? Express your answer with the appropriate units. ▸ View Available Hint(s) [PMC Units ? www] nC ?

Two m = 5.8 g point charges on 1.0-m-long threads repel each other after being charged to q = 80 nC, as shown in the figure. (Figure 1) Figure 1.0 m m + 9 00 1.0 m +m 9 1 of 1 Part A What is the angle 0? You can assume that is a small angle. Express your answer to two significant figures and include the appropriate units. μ 0 = 4.21 Submit μÅ Ω % À X Previous Answers Request Answer ? X Incorrect; Try Again; 7 attempts remaining

Consider the following. 60.0⁰ B 0.500 mm (a) Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 1.80 pC, B = 7.10 pC, and C= -4.30 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC = 1 x 10-12 C.) magnitude N/C direction o counterclockwise from the +x-axis (b) If the charge of cell A were doubled, how would the electric field at cell A change? O The field would be unchanged. O The magnitude of the field would be doubled. O The magnitude of the field would be quadrupled. O The magnitude of the field would be halved.

You have a vertical polyethylene rod. It is 30 cm. It Carries a negative charge Q=-3μC which is distributed uniformly allong it's length. A 51 gram marble of glass Carriies a positive q= +0.44 μC charge  . The marble hangs from the rod from a plastic string, 10 cm below the rod. What is the tension in the string?. a. 0.8N b. 0.5N c.0.3N d. 0.2N e. 0N

A 5 cm radius ball is charged to 190 nC. The charge is uniformly distributed throughout the volume of the ball. a. What is the charge density for this ball? ANS. 3.628733×10-4 C/m^3 b. How much charge is enclosed by a sphere of radius 1 cm concentric with the ball??