State the law of conservation of electricjkb e lik/.wk(:n7: 8ltxj3 ov charge.

  Is it possible for two negative charf+ 3 wyw7tbhz rwqcj-+gj)9:w ges to attract each other?

  Is it possible for a positive and a negative ct3g,(;w znxmh harge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri1-9. vrxi rx*. unoocing the process the glass rod acquires a positive c9iicn-ro*1x r .xu.ovharge and the silk

  A proton carries a

  The model of the atom/6z l xqa:lmlrgrt0 v3w9bepu)+g-1h 9pjpi: shows a

  A neutral atom always hasemw9s; 3v(,a w 1llk tqjexd3 y1jt2 ohnr/9d+

  An atom has more electrocyidp3n3ago7.yrm.2 yhh s 5lt2b) (ens than protons. The atom is

  Materials in which the electrons are bound 5duw q6 lwp:pg- skt+2very tightly to the nuclei are referred toplq6 g+tdks2w p-:5uw as

  Materials in which the electrons are bound vej8h 7ezsr5,dm l4fifh+ +g 6fvry loosely to the nuclei and can move about freely wie g4mfs,57f+flvhdi8h 6+rzjthin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mef3f;8zphw. wa,n /3 ka )dqcrbtal bar. The end of the metal bar farthest from the chaqafz wr)fwh n; c8.,a3pb3/kdrged rod will be charged

  Sphere A carries a net positive charge, 2.i fbt1bdg7ud ua 7xk01 wa2zand sphere B is neutral. They are placed near each other on an insu7twg.db u7fi0za ba 1dux1k22lated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e 2lfn/y0ow3 wr;fzku1lectroscope positively?

  An originally neutral electroo 41(7k gp6/ypdydpliscope is briefly touched with a positively charged glass rod. The electro(pki74o dlp g /p16ydyscope

  An originally neutral electroscope is grounded briey+kn ,fmkt wvl2( 1k 65ech7adfly while a positively charged glassklw 5h mv2cyk7k(+d6nfet,1a rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neut4g xes) + fifk)o.f2nyo *tcxxz6..cgzex k)4ral electroscope, and the leaves separate. Then a negative object is brought near the electroscopf2c+)noc t..xiz g.sfgy*6kezfe xx4 4))koxe, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mqx4 6mik/h 3,ngbm ou-etallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but doeun ih 3-bg4, kq/moxm6s not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constacb(nki2f-0g 2 hukmwj- q1 a8bnt $k$, which appears in Coulomb's law?

  Two charged objects are separated byq qrrfb99 4h;vqj yp4; a distance d. The first charge is larger in4y rqrh q4;q9jpf;9bv magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arrp9 q -x0plf*te placed near each other on an insulated table. Which statement best describes the electrostatic fo9 - x0qplrt*pfrce between them?

  Two charged objects attract each other with a certain for)3e)6u rlj 4ejq ou6fpce. If the charges on both objects are doubled with no change in )4u )3q6pfurejoj6 elseparation, the force between them

  Two charges are separated by a it+ 7 wpqltj2k(skg84 distance d and exert mutual attractive forces of F q(spti2l7w+ kkgj8 t4 on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract e6m z9t+v g7 eok5;mm4sl.gug-i a5fccach other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bet5;s u6tea+7ggf9 m k co-l4gzcmi5mv.ween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m9; ,mcgew,lot . What happens to the magnitude of the force on the proton if a second electron is placed no,m gl;ct9e, wext to the first electron?

  An electron and a proton are se(*tg1dv6d g separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elec*s6g1(d dvegt tron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tofg5f ssxgw 8* -5ho/gm xw f/o5fgg *g85smh-s the size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cen o ez-4*symwyp;r qq 3oln+4o3ter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the cent4e 3 wo4+ r-p3lqoznsym;*oyq er of the square?

  A point charge of +Q is placed at the 2e1 0fgfug1or centroid of an equilateral triangle. When a second charge of +Q is placed at one of the tr u1g01orf2f geiangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin gy2a+sq7(ah jg is not a vector?

  At twice the distancvii4u7 f/qzw)gi y;6ze from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betweendw ly:/wqz82f a negative and positive charge along / 2zlqw:8fywdthe line joining the two charges?

  Is it possible to have a zero emg07/ *06m aiuvnboo ilectric field value between two positive charges along the line joining the two charges? io/0 v6 mbon7g0aum*i

  Electric field lines near psitive point charge( /f2oj7qabkauhj0s2 s

  The electric field shown )hfj6jgx y4.q 6 )cewh

  Can electric field li +p8kj2 ;o.ibsa zcbpso1; 1qunr78u znes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni* z(/ ngk 8eo t0yp7q.ep;zxq opvp4q2form electric field. z7 qp o/zqx4(nkpe*tq.82o v0y e;pg p Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters areth /(j, omiv9i each given ot mvi j/,(9ihthe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e3tuhqvrf 3 9)nlectric field is directed straight upwardrt9nh v33quf ). What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu a hi8)w4vap w15sc if:r8w p7hr0-romm near an electric charge

  A positive point charge is enclosed in a hollow metallic+4enii gf+n56* nerx x sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sp+geiin5*6x +f enxr4 nhere has

State three properties of conducglof cb-tan,e1 20 1iktors in static equilibrium.

State Gauss's law.

  The charge carried by one ele jhuo ks,qx1+1a+gdkr33) kamctron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a ni:wyi1jg4h oea9c8 a+ et charge of +2.00 mC. How many more protons than electrons does thyaa1 ic49jhgi 8w+: eois piece of plastic have?

  What is the charge on 1 kg of 3esa 0:mg e:h9jtmg)eprotons?

  An atomic nucleus has a charge ti25cxit u;e. of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by40p 8cmucn0u 8dwq6 wb 1.5 cm, have charge values of 2.0 and -4.0 mC, respectivel4cwpn md 06uw8c0q8uby. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, andtp2 z gx ;.:ahycu-zz9 the force between them is 1.0 N. What is the magnigayut;9z- pz 2xc :.hztude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far au fmpl0(lxl-w09 (s erpart are they?

  The force between a l:kn *x qj/ae2n.,bea26 r)rtuep0mb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.fomv :pr uoj*:;r 2j4h4f-fc t0 cm apart, experience a 1.0-N force. If they are moved to a new sepaj:h24 p-cojrof4;fuv *rf : mtration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir-uqneotg(c* wpkg -g /:(-xkvst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the elevwgneoc(: /- -*-q(t ugkxpk gctrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC y aop7inb)l5 1is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 y o7ib5 pln)a1mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following poseavz e)vq71 uf3 -c0writions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q31cev we3qz -f)7r0vau = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the9bv.cl( -cqu 0pay7 ie center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive c07 i (ae.vy-qbpu9c lcharge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0./)ie7wwlborczzu 151 c c1r4 f30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net for11bzlwcr 14 uc57e riz/)f cowce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ist6xd)ld .uzi 44(a jeiefu25r at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)4(t.ueui lraij ded624)5fzx . What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 6d- cqe9h *sm:m, nqetmC are placed at the vertices of an equilateral triangle which measures 30 cm on a sideq e6 nesmt-c,m hdq9*:. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated b9nwldd;(/w/jxgmxk0 wf: 9suy 3.0 m. At what point, on a l /l9fn s9jxd(/xwwkg d;m:u 0wine between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe,3xid4yf1 go z:q imo;re on the x-axis can a third c ,q id3myozixg;f:o 41harge be placed so the net force on it is zero?

  Charge +2q is placed a61d z;tj81/* kuyc quyhpbj0ct the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placeu1jk1u th0qy6c cd/y;8*p zbjd so that the force on it is zero?

  A copper penny has a mass of 3.0 g6m4wqr(ttbqs( c homs m/: ;4h. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up agains)mwkdd9 8d je,t the force of gravity by the attraction of a fixed pm wd,)9k jd8edroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are g7ihig6 t36jqb jk54ohung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic i 3jqbt6k754 igg6jhorepulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electric f *n v+6klnrld1ield at a distance of 1.0 m from the nuclev+l1nd n6r k*lus?

  What are the magnitude and direction of th a l:m 2faqutlqa6sc9,o56pe9e electric field at a distance of 1.50 f,l:apest a umlqq2599oc66a m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. : x,hm9spzi,u;)ksu6n2fr3bin( ex i What is the magnitude of the electric field at t;6i,( inu92xebs f m hzu)sr n3ik,x:phe location of the test charge?

  A 5.0-C charge is 10 m from a small tfmq/ 9tp8bjrphu 4e;9ujp ./jest charge. What is the direction of the elejfpu9b8 p4.uh e/rj;tm/p 9j qctric field?

  A 5.0-C charge is 10 m from a smallzp+ed.3fx 4ug 2 itx7e test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargtx x.7ei3eud p4g2+ fze?

  Two point charges each have a value of 3.0 C -d i c2bl*i)k3x3dtmn and are separated by a distance of 4.0 m. What is the electric field at a point mtm 3-3kdldi x)*nb2icidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticac1 w31i 92ktj1pd(okd3 lnauk and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 d331at j9 n11d2k(owc klia upcm mark?

  A 5.0-mC charge is placed at t(6ndrwp(9cf,k0l g,l+v l pv*ongml zkv.3;dhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on (m +f ,k(cgnp9 ondprlz vglkdl,v* 3;l60.wv a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pl 934j4x( tama)g i xkajkr0s6ms k.zz:aced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thrg x :i.m4 tasj3(kj49 s x)ka06zmakze point midway between them?

  Three 3.0 mC charges are at the three corners of a.0k(e0/ok q ephn m-jri jiv*6 square of side 0.50 m. The last corner is occupied by a -3.0 mC ch/0m 6r n *hpvei(k-o ejik.jq0arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charhov+3l4za ,/zac tc9s ges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0/zv49ac+slc tah 3 z,o); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifor 8yiytp*ia49ff09v1 qt4 .unzdn/ jc-kgry : gm electric field. What is the magnitude of this eleakgrt1 4:- iz /fiyy*8.yd ucnt4gnjp qv99f0ctric field?

  A particle with a charge of 4.0 mC has a mass -o1wkjows -g, of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an ele9c 6bp wm3k3cectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susmkwec c693b3ppended?

  A foam ball of mass 0.1hbqz0z a -( hwi:iyl*4l1axn750 g carries a charge of -2.00 nC. The ball is placed ins:a 7iazi-bxhw*l z h yl(0nq14ide a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiuyc n0qr 5x;,mhmag 4n:s 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface qma0hryn 4:,xmg5n;c?

  A metal sphere of radius 2.0 cm carv jxtvco4 w,qu1x5t, t7t u*jfd*jc15ries a charge of 3.0 mC. What is the electric field 6.0 cm from the c tju c5v jd5jfxtct,*17 oxw,qt*41u venter of the sphere?