a. An electrically neutral penny, of mass 3.11 g, contains equal number of positive and negative charges. Assuming the penny is made of pure copper, what is the total positive (or negative) charge within a penny? Atomic mass of copper = 63.5 g/mol NA = 6.02 x 10 atoms / mol (Avogadro's number) Atomic Number of Copper = 29 protons/atom NOTE: you don't necessarily need chemistry for this.Dimensional analysis!!! b. Suppose the positive and negative charges could be isolated into two bundles and separated by a distance of 1.00 km. What would the force of attraction between the SLADA bundles be?

Three point charges are located in free space along the x-axis. A positive charge of +2 uC 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 10²: 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 ?

A conducting sphere of radius r1 = 0.18 m has a total charge of Q = 1.9 μC. A second uncharged conducting sphere of radius r2 = 0.46 m is then connected to the first by a thin conducting wire. The spheres are separated by a very large distance compared to their size.Randomized Variables r1 = 0.18 mr2 = 0.46 mQ = 1.9 μC What is the total charge on sphere two, Q2 in coulombs?

What is the object charge per attached? I think we use  the idea that  E = kq/r^2. The r is given, check. I believe we have to convert cm to m.  The electric field is given via strength in N/C, check. We solve for q.  I need your step by step walk through to see your thinking for this neophyte.

Suppose a speck of dust in an electrostatic precipitator has 8.0000 × 10+" protons in it and has a net charge of 2.00 nC (a very large charge fọr a small speck). How many electrons does the speck have? Include 5 significant figures in your answer. For this problem, use e = 1.6022 × 10¬1º C as the fundamental charge. n = number (5 significant figures)

Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of –2.0 µC; sphere B carries a charge of –6.0 µC; and sphere C carries a charge of +4.0 µC. Spheres A and B are touched together and then separated. Spheres B and C are then touched and separated. Does sphere C end up with an excess or a deficiency of electrons and how many electrons is it? A. deficiency, 6 × 10^13 B. excess, 2 × 10^13 C. excess, 3 × 10^13 D. There is no excess or deficiency of electrons.

1. A solid sphere of radius R is made of a metallic conductor. Another solid sphere of radius R is made of an insulating material. An excess charge Q is deposited on each. Which object has the greatest surface charge density? 2. A solid sphere of radius R is made of a metallic conductor. A hollow spherical shell of the same radius R is made of the same conducting material. An excess charge Q is deposited on each. Which object has the greatest surface charge density?