Two spherical objects are separated by a distance of 1.52 x 103 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 2.24 x 10-20 N. How many electrons did it take to produce the charge on one of the objects? Number Units

Two electrons are passing 25.0 mm apart. What is the electric repulsive force that they exert on each other? (The value of k is 9.0 x 109 N-m2/C2.) O 3.7 x 10-25 N O 3.7 x 10-27 N 1.4 N O 1.4 x 1010 N

Problem 3: Three charges are located as shown in the figure, with values q = 4.9 x 10-16 C, 92 = -1.8 x 10-16 C, 93 = 6.75 x 10-16 C. The charges are separated by d7 = 2.3 × 10-6 m and dz = 1.4 x 10-6 m. 93 d, Otheexpertta.com Part (a) What is the force of g2 ong in the x direction, F,? Give your answer in newtons, and recall k= 8.988 x 10° N m2/C2. F= 1.5 * 10-10 F = 1.5E-10 Correct! Part (b) What is the force of q3 on q in the y direction, F,? Give your answer in newtons. Grade Summary Fy = 1.51 * 10-9 Deductions 2% Potential 98%

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

In the picture below, the rod is positively charged. Electrically speaking, water is a "polar molecule"; each water molecule can be imagined as a negative charge (the oxygen end) and a positive charge (the hydrogen end), each of approximate magnitude 2e, separated by an approximate distance of 2 x10-1" m. a) Explain how a charged rod can exert an electric force on water molecules that have zero net charge. Include a picture of a typical water molecule in the stream of water adjacent to the rod, showing its orientation relative to the rod. b) If the charge of the rod is +32 nC and that charge is located approximately 2.0 cm from a water molecule in the stream, what is the maximum possible net electric force that the rod could exert on the molecule?

Charges on raindrops vary widely in both magnitude and sign. Consider a case where the two drops on the x-axis are 2.18 mm apart and have charge q = 769 nC, while the third drop is 10.3 mm up the x-axis and has charge Q = -2.02 μC. (Figure 1) Figure x=-a x=a Part A Find the x-component of the electric force on the upper drop. Express your answer with the appropriate units. FQz = Submit Part B Foy= Submit μÀ Provide Feedback Value Request Answer Find the y-component of the electric force on the upper drop. Express your answer with the appropriate units. uÅ Value Units Request Answer ? Units ? Review | Constants Next >