16. Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of – 4.0 µC; sphere B carries a charge of –12.0 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?
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- 1. Consider three protons (each with a charge of +lel) positioned on the three corners of a square with a side length of a. Then, from infinity to the origin, an electron (-lel) is brought. a O B. Infinity to zero. How much work must be done by the electric field to bring the electron from infinity to the origin? OA. ke² klet²2 (2+12) a _klel² (2 + √2) a OC. ke² kle/² (2-√²) OA 4k|e|² 2. Assume that the three protons and the electron are originally at infinity. Then they are put together so that the three protons are at (0,2), (a, a), and (a,0), where a > 0, and the electron is at the origin. What is the electric potential energy involved in putting them together? 08. 0 4 4k|c|² (4+ √2) a 00. Hel² (2 + 1/2²) a a OA 2√/2kjel a 3. What is the potential at the center of the square formed by the four charged particles assembled in Item 2? OB. √/2klel -(4+ √2) (T OC. -√2k el a X OD. 2k|c104. In copper there is approximately one free electron for each atom. A copper coin has a mass of m=3 g. (k=9.10° N.m²/C², NA=6.02.10²3 mol-¹, e--1.6.10-¹9 C, M-63.5 g/mol) 1) What percentage of the free charge would have to be extracted from the currency for it to acquire a charge of q=15 UC? a)2,69.107 % b)2,99.107 % c)3,29.10.7 % d)3,59.10-7% e)3,89.107 % II) What would be the force of repulsion between two coins that have this charge, if they were separated by a distance of d = 25 cm? (Assume currency as a point charge) (a)30.4 N b)32.4 N (c)34.4 N (d)36.4 N (e)38.4 NA mass of 6 X 10-24 kg has a charge of 2|e| where e is the charge on an electron. a) What is its KE at 2% of the speed of light? b) What is this in eV? c) What is the voltage needed to obtain this energy?
- B. (Solve) 6. What is the net charge of an object that has 1.0 million excess electrons? 7. In walking across a carpet, you acquire a net negative charge of 50 C. How many excess electrons do you have?Two small balls with a mass of 2 g each are hanging on two separate strings 0.5 m (50 cm) long attached to a common point. They are given an identical negative charge and spread apart to a distance 6 cm from each other. How many excess electrons are there on each ball not cancelled by positive charge?2. An average human weighs about 650 N. If each of two average humans could carry 1.0 C ofexcess charge, one positive and one negative, how far apart would they have to be for theelectric attraction between them to equal their 650N weight? please explain me step by step please
- Rubbing a plastic bag and a balloon with a cloth gives both objects a net negative charge. The balloon's charge is -2 x 10^-10 C and the bag's charge is -1.5 x 10^-5 C, and the balloon has a mass of 1.3 g and the bag has a mass of 0.5 g. How far above the center of the balloon will the bag levitate?3. An isolated system consists of two metal spheres, with sphere 2 having twice the radius of sphere 1. Both spheres are initially charged as shown in the initial figure. The two spheres are then brought into contact with each other so that charge, in the form of electrons, is transferred between them. The spheres are then separated as shown in the final figure, where they have unknown charges, q and q2. Since sphere 2 has twice the radius, it will have twice the amount of charge than sphere 1 in the final state. Find q, q and the number of electrons transferred between the spheres. Hint: The net charge of the two-sphere system is conserved, since it is an isolated system. initial electron transfer between spheres final 91 = +12.0 μC 9₁ = ? q2 = -3.00 μC 9₂ = ?4. Three identical metal balls A, B, and C are mounted on insulating rods. Ball A has a charge +q and balls B and C are initially uncharged (g is the usual symbol for electric charge). Ball A is touched first to ball B and then separately to ball C. At the end of this experiment, the charge on ball A is A. +g/2. B. +g/3. C. +g/4. D. none of the answers
- 1. Adjust the voltage to 0.05x V and adjust the plate area to 10y mm² and the separation distance to 0.2z mm. What is the magnitude of the charge (in Coulombs) stored in each plates for x= −27, y= 21, and z= 39? 2. Adjust the voltage to 0.05x V and adjust the plate area to 10y mm² and the separation distance to 0.2z mm. What is the magnitude of the Potential Energy in Joules in capacitor for x= -8 and y= 10? 3. Adjust the voltage to 0.05x V and adjust the plate area to 10y mm² and the separation distance to 0.2z mm. What is the magnitude of the charge stored in each plates for x= −25 and y= 14?4. A particle with 4 nanoCoulomb charge produces an electric field with a magnitude of 2.0 N/C at a point. How far away is the point from the particle?An object has an excess charge of -1.6 x 10 1 C. How many excess electrons does it have?