Two metal spheres are hanging from nylon threads. When you bring the spheres close to each other, they tend to attract. Based on this information alone, discuss all the possible ways that the spheres could be charged. Is it possible that after the spheres touch, they will cling together? Explain.

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ing W Point charges q = -4.00 nC and +4.00 nC are separated by distance 3.80 mm, forming an electric dipole. # 3 D E SP D So $ 4 R *** F - 96 5 T G 6 B Y ▾ Y Part A Find the magnitude of the electric dipole moment. Express your answer in coulomb meters to three significant figures. ▸ View Available Hint(s) H 95] ΑΣΦ Submit Part B. What is the direction of the electric dipole moment? Ofrom ₁ to q O from ₂ to g Submit Part C ■V VD] ΑΣΦ MacBook Air Request Answer 1 → C The charges are in a uniform electric field whose direction makes an angle 36.1 with the line connecting the charges. What is the magnitude of this field if the torque exerted on the dipole has magnitude 7.70x10-9 N-m ? Express your answer in newtons per coulomb to three significant figures. View Available Hint(s) N U 8 M 1 K ? ( 9 ? 22 C-m O O into a power outlet. P ? return

When you remove your wool suit from the dry cleaner’s garment bag, the bag becomes positively charged. Explain how this occurs.

Two identical spheres are attached to silk threads of length L=0.60 m and hung from a common point as shown in the figure. Each sphere has a mass m=7.0 g. One sphere is given a charge q1, and the other is given a different charge q2, this causes the spheres to separate so that when the spheres are in equilibrium, each thread makes an angle = 20 degrees with the vertical. A small wire is then connected to the spheres, allowing charge to be transferred from one sphere to the other until the two spheres have equal charges, the wire is then removed. Each thread now makes an angle = 30 degrees. Determine the original charge (in micro-coulomb) of q1.

What is the resultant magnitude and direction of the force on a 7 μC charge situated on the y-axis, 4 cm from the point of origin, due to a pair of 3 μC charges located on the x-axis at opposite sides of the point of origin, each at distance of 4 cm from the point of origin? O a. 85.4 N O b. 83.4 N O c. 27.8 N O d. 83.4 N O e. 82.4 N

Determine the distance of separation between charges…

Long highway tunnels must have air cleaners to remove dust and soot coming from passing cars and trucks. In one type, known as an electrostatic precipitator, air passes between two oppositely charged metal plates, as shown. The large electric field between the plates ionizes dust and soot particles, which then feel a force due to the field. This force causes the charged particles to move toward and stick to one or the other plate, removing them from the air. A typical unit has dimensions and charges asshown. What is the electric field between the plates?

Two small charged objects attract each other with a force F when separated by a distance d. If the charge on each object is reduced to one-fourth of its original value and the distance between them is reduced to d/4 the force becomes: A. F /16 B. F/8 C. F/4 D. F/2 E. F

You run a comb through your hair and it becomes positively charged. Does its nass slightly increase or slightly decrease? Why? Where does the mass go to/come from?