State the law of conservatiooi.6z 8v3e a *k(oaawvn of electric charge.

  Is it possible for two negative charges to attract each mxrq.mg p-.3 eq +(wur;d c1srother?

  Is it possible for a positivx2 6n3qk-xyvs e and a negative charge to attract each other?

  A glass rod is rubbed witc66z smgsk2-eh a piece of silk. During the process the glass rod acquires a posit6se6smgz 2 -kcive charge and the silk

  A proton carries a

  The model of the atomy/ 4ew+emn 0xn84oiid shows a

  A neutral atom always ;yu97s t l3);evktvin has

  An atom has more electro kk1 f9.bk72rdhzd0w (*sq pycns than protons. The atom is

  Materials in which the electrons are bound very tidw a9bw3u s3-bghtly to the nuclei are referred to aw-sdub3w93b as

  Materials in which the electrons are bound very loosely to e;l:+pb nd7lfthe nuclei and can move about freely within the material are referrd:b e;7lnlfp+ed to as

  A negatively charged rod is brought near one end of an +pfhjr+ygwj/ 5q /melp 84uyglc g7fll,*3u , uncharged metal bar. The end of the metal bar farthest from the char*jl/ /qp,+7gym 8lhg ,lg4f3 lyu5jcfurwep+ged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutr sg2rq 0 eanl61dpr98byfn.-eal. They are placel r.qr- gf n08ynpaee12d9b s6d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleld5 yphx ;)5lgyq;dj04e,wz a ctroscope positively?

  An originally neutral electroscope is bripl y lmlbd*u bxj7c1wt3yi,l-: (z ;b6efly touched with a positively charged g1lbw ld(,7bmbuz l3l*ty6 pxi; :cjy -lass rod. The electroscope

  An originally neutral electroscope is grounded briefly w ;/;(hg m 0 djxnd v9omm,q04vmmli(kohile a positively charged gla0omog(9; kxmdhmmj/i 04d ;v( vnm ,qlss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, vbf:h f-pi-- iand the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the -fp-b:h-vii f leaves?

  A large negatively charged object is placed on an ineft p u3v5*cs71k v4pfsulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along th3f5 7p1kvcv4u *pestfe path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does 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 Coulm )k,k6xaz9 ndomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distw eg)n9 ixjn7.yj 90rdance d. The first charge is larger in r 7xig09ynj.nejw)d 9 magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neui,x-ni;qlf *tz2a-bj 20irzw tral. They are placed near each other on an insulated table. Which sb ziaz0-w,t;i 2 -*r nj2lxifqtatement best describes the electrostatic force between them?

  Two charged objects attract each other witg q8jiq* ypz3*kn (s,oh a certain force. If the charges on both objects anz8 i *p,q (j*gysqko3re doubled with no change in separation, the force between them

  Two charges are separated by a distance d and ez l3d-60jvnkjxert mutual attractive forces of F on each other. If the charges are separated by a dijj vk n6-3zl0dstance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whaylt9z1fwf1a. t happens to the force between them if one charge is doubled, the other charge is tripled, f1yl .w1taz9fand the separation distance between 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 do)up 50ug7sn9+ do,pzr fm7uw istance of 1.0 m. What happens to th,n57zu+ grs9p) o7f d upmw0oue magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanc7ui6. z4sfjygdpf.p .e of 1.0 m. What happens to the magnitude of the force on the first elup.gi f7j46. dzpyf.s ectron if a second electron is placed next to the proton?

  An electron and a proton bo:m qwe:;s7d(b7w eg are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the g:e:wwso dm7 q(7bbe;proton?

  A point charge of +Q is placed at th v19dp2 htsu5re center 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 o 9hs vut2rdp51f -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 center of the square?

  A point charge of +Q is placed at the c9xm2 .n5q7cikh ttv1m entroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle'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 tocmk 5ivq.mx971t thn2 a third charge of +Q placed at one of the other vertices?

  Which of the following is not a6 ) bu8el ko42b*6kekpltpt0a vector?

  At twice the distance from a point chargo+ld,-uv5 kpne, the strength of the electric field

  Is it possible to have a zero electric field value between a nega4zot/g(ohg+y vpn5c 7tive and positive charge along the +tn (7phozv5 oy4g gc/line joining the two charges?

  Is it possible to have a zero electric field value between two positf y*x9sxih 4i;ive charges along t i4yxfh 9is*;xhe line joining the two charges?

  Electric field lines near psitive point6romzh .8/dff charges

  The electric field shown t 7u w3anli.0+)0k;ie kn pgvr

  Can electric field lin b hc+uj4h 0/ i/tea6jvfdyg,:es intersect in free space?

  A solid block of metal in electrostatic bmq2/9+ehnc kequilibrium is placed in a uniform electric field. Give a statement concerning the electric kh /n+cebq2m 9field in the block's interior.

  If a solid metal sphere and a holn -h +-cnmferbo*d 0;;ehn f.hlow metal sphere of equal diameters are each given the same charge, the electric*bd rm f.o;-n+cn h;e 0nhf-he field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whx y29pf* po+mvere a uniform electric field is directed straight upward. What can be said concerning the charge on the blyv9p o+pm fx*2ock's top surface?

  If a conductor is in electrostapfie:y,u-.qh tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro;lcroed8t:- p unded. As compared to the case without the hollow sphere, the electric field at a point direprdo e; cl:8-tctly above the hollow sphere has

State three properties of conductors in static equilibri jyutr*wpulh; 8k4 17num.

State Gauss's law.

  The charge carried by0i65romyrpo .8q. j+r cwgwh1 one electron 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 net charge of 0 4qy4ls a,ong;n,c6r2 edmmn+2.00 mC. How many more protons than electrons does this oc4,rgad n slq2me;y,0 6nmn4piece of plastic have?

  What is the charge onih5vk iv8h46* p2r32lasv dyq 1 kg of protons?

  An atomic nucleus has a charge o5 mmh3d;i)hbmm 7v 6o(l;nlcu f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separate;+er3v(b p1 p4zocn pa3tu+vsd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnit baepucv1s z(p433t+r+ ;n vpoude of the electric force between them?

  A 1.0-C charge is 15 mz9jz,) 1kdu n ehf7wvrpk51l4 from a second charge, and the force between them is 1.0 N. Wh7v zh),zr1d4up nlf5 ewk19k jat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 ja mp zm +:.qoef54f8qkm s*2iN. How far apart are they?

  The force between a jjc ky6t;db5r2zp/)q$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm or 64t4u x(gwjapart, experience a 1.0-N force. If they are moved to a new separation of 8.0 wxuorgtj 446 (cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-ax)za5p 8ea*cbpw iqibz, p/p:7 is. The first charge is at the origin, the second to the right at x = 50 cm, and the third qw/5, 8a:eb7zz ip*apcib p)p is 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 ar 9vxw; bltmr pu jh,8t19hm/d+e placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5 m8+x91l;dmuw,b9th/ptv rj h0 cm, and +4.0 mC 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 folvndyg.(n-9hc lowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of th.-c9hg( ndvyne force on the 3.00-mC charge?

  A point charge of +Q is;n/pprdsh /:ase8zl - placed at the center of a square, and a second point charg pn s/-rlzp 8:/hsdea;e of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge 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 (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 n uy om*b.z4v7iC is at (0, 0). What is the magnitude of the net force on the 5.0 i7 zu.*mb vyo4nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5urg )*noyu-h2(ak3zvxw a:s / .0 nC is at (0, 0). What is the direction of the net( o):hz avx/2raw* uk3usn gy- force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices id83ee:ogqt be 0/a6r of an equilateral triangle which measu3q rgede /b0e ao6it:8res 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ), a4cp:6 wijueoh73fhk*wv s and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be p: h )c6ahjuwe, 4fv o7iws*k3possible 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-k/; n5 bfem ubo;z5k1bC charge is at x = 4.0 m. Where on the x-axis caoz 5un b1b /ebkfk;;5mn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ci7n-vpn : z1plb4,mq charge -q is placed at x = 2a. Where can a third ppmblznp- q71 4ivcn:, ositive charge +q be placed so that the force on it is zero?

  A copper penny has a mas)1zys *-sc9fnh,ht x4 :dvf tqs of 3.0 g. 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 against the force of6kslbaf g-8,9k3 fsm(iwfqt1 gravity by the attraction of a fixed proton some distance above it. How far above t( ms9w1-fsbf8la,kk36 iftqghe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting th yqg-tbd+ o5h8reads which are 30 cm long. Both are given identical charges, and the electrostatic +by hqodt g5-8repulsion 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 +40excb*uh4512 9 /hmz0yprbj0oa o,y axw. What is the magnitude of the electric field at a distance of 1.0 m fbhm ,z* hycua ox1wr09/x 2405oabjpyrom the nucleus?

  What are the magnitude and direction o4r44/tzaa pzbf the electric field at a distance of 1.50 m from a a4b4pr/t4 zz a50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude g5 5r mpioj93satp b,9of the electric field at the location of the test chargsb3,jp 5go mtp 9ai59re?

  A 5.0-C charge is 10 m le,*2o :jtqqba.7l zrvm:t3 k from a small test charge. What is the direction of the electrickalle*t7 q2,.:vjb:rz m3tq o field?

  A 5.0-C charge is 10 m from a small .*u8aj um(9jp g lxc4ytest charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the (xujyml.u 4*pj9a8c g location of the test charge?

  Two point charges each hfd 9//1kgnjbn ave a value of 3.0 C and are separated by a distance of 4.0 m. Wh/gnd9/ kb1fnjat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm ma- 04q w,oso 3r1mzwe2v r zoazvp2sh/*rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?-a zshvom32z,/ psvwzq w4r*0ro1e2o

  A 5.0-mC charge is placed at the 0 cm mark of a meter *rsz: +a wvcc2stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the ele rsz*cw2vc +a:ctric field zero?

  Two point charges of +3.0 mC and -77pxejwcdcg-eninq ( ..*6 :x.wr)uu r4ee;u h.0 mC are placed at x = 0 and x = 0.20 m. What is the7e*u h d(6; 4eep. w.)ucr xu:grqjncn-iew.x magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges -8b6gqxb,x dh/. 4gzh cotp7c are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fi.cx -g,odz6t7gp /b8c bhhqx4eld at the center of the square.

  Consider a square which is 1.0 m on a side. C 1,0ll6+co2 xct 0my,v ul9qqfdi5ncjharges are placed at the corners of the square as folli j,0u6 y+mo 95 ltncq2 q01dxccl,fvlows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -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 plar(,g hutln* mb/e v,i)ced in a uniform electric field. What is the magnitude of ltir)uh bng/v,m,(* e this electric field?

  A particle with a charge of 4.0 mC has a mass of m 6a1i -3i9p q/vxcrqr$5.0 \times 10^{-3} \; kg$. 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 electric field obi1fyk8j 7+enf 6000 N/C pointing downward. What n+eb81k fij y7charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 uhpz)9cb z i5f 6hxae0 1if8l6ox 5ub7g carries a charge of -2.00 nC. The ball is placed inside a unl 5x89uzhcf 5fxb0b aoz 716iip6ehu) iform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of rad ,oza ph)(cha c +*5c3roxtmrtne3j+) ius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric f)*zh35m+ao,je( rth 3oxac rcc+ n)tpield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carr6jo(truxb a-( i fctiw /.b(.fies a charge of 3.0 mC. What is the electric field 6.0 cm from the cente/j(ba urbo 6xt(( i-wftc. i.fr of the sphere?