State the law of conservfm b-;g 9xsj98r1nrptation of electric charge.

  Is it possible for two negative charges to attract each other fsgy0n xx8 8uw-b(x*pg-u hp-?

  Is it possible for a positive and a negative charge to attract each other?5)pey y3wplu mlh+ (y m1hac ql+-de04

  A glass rod is rubbed with a piece of silk. Dgmug ) qmn40jnfn0p/k05 pr(4q a e,lauring the process the glass rod acquim(q5apf 0qn) kg4 pg4enmlu0a,j 0/nrres a positive charge and the silk

  A proton carries a

  The model of the atom shows zrj2oss:yz15oy p59d a

  A neutral atom always haslb, 0ya rk; msve.88nvgek4n:,. 8uspg 4ayzf

  An atom has more electrons than proto jsh/uq:yp (x*p 3 f)40rxefaons. The atom is

  Materials in which the electrons are bound very tightly to zk-g 8w9jy*5w 8 nlmobm/h/vnthe nuclei are referred to *mhkn85znv-y w/o wjm8l9 b /gas

  Materials in which the electrons are bd,2c*bkqv pvkvf 3d04 ound very loosely to the nuclei and can move about freely within the c*34,v2 qkdvvk dpbf0 material are referred to as

  A negatively charged rod is 0dek+7b ncb2 zbrought near one end of an uncharged metal bar. The end of the metal bar farthest fromnd02c+7be kbz the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra-qe9sppt12uijq*;b d 77 jhwwl. They are placed near each other on an insulated table. Sphere B is briefly touube9j2hsqwj itqwpd-1p ;7*7ched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc 0-mr(yldy-m pnbsz gzr7b;/ .ope positively?

  An originally neutral electroscope is briefly touched with a positively 5u,+bkp(f o :+bdxk dgcharged glass rod. The electroux obd :d(kf,p+bg5k+scope

  An originally neutral electroscope is grounded briefly while a positv zdc+el/9sq 3ively charged glass rodzv 9c e+3/qlsd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and- vf,egkq-/q6yu3 k avjb5ng( the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What vq/b kevqyaj5fu g3 ng--k(6, happens to the leaves?

  A large negatively charged opdtfppp9 + ,o0 5 bc39s8-o vl*uedepbbject is placed on an insulated table. A neutral metallic 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 bpe*cdvop3- u90, tpf+bl 5pe9s8odpball 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 Coulomb crp7hp *e :apw8n ium)hz(e) 1donstant $k$, which appears in Coulomb's law?

  Two charged objects are sep ;c.+v7h/. yqa kdmha6h-ljssarated by a distance d. The first charge is larger in magnitude than the ss7qc/shvamhykh+ ;- 6l.j. ad econd charge.

  Sphere A carries a net charge and s1) pez,sst7wb7r a i 5xz/pqf.phere B is neutral. They are placed near each ot)x apti5zper,zq71.sbfs /w 7her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the u/ihux- l*/vqcharges on both objects are doubled with no change in separation, the force between the/ xiuul*-hq v/m

  Two charges are separated brs p+oho2yun :8r h.;sy a distance d and exert mutual attractive forces of F on each other. I r u8p.o:oh sr;+2ynshf the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects att*0bhs.flhdfiwrv-ign 0z)- * ract each other with a force F. What happens to the force bethl0 di- 0gv*r z b.sn-wih)ff*ween them if one charge is doubled, the other charge is tripled, and 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 distance of 1.0 m. Whatpgk8m+3eleq -- 0 ema r77yuxe happens to the magnitude of the force on the proton if a second-8 ea0ye+uq37 gep-emxml k r7 electron is placed next to the first electron?

  An electron and a proton ar38v,d o5 wz n q*x,h5yggkdqo6e separated by a distance of 1.0 m. What happens to the magnitude of thgnoq wzg 5 *,y3,ho86qx dvdk5e force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanctp3pm,vb2n 3 8de3xo oc7x7up e of 1.0 m. What happens to the size of the force on the proton if the electe t7p7v3bxd2m3 npoc pxu38,oron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sssz 67(wu7pu kquare. When a second point charge of -Q is placed at one of the square's cornersus7zk(ups 76 w, 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 center of the square?

  A point charge of +Q is placed -j 2/yytm1xdv-kj7s4mwpun/ at the centroid 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 i/yu7 mwv 2ts4jmx y1-p/-dnkj t. 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 following is not a veccwspe j(pq 1/ ce6he;;tor?

  At twice the distance from a point charge, the strea:li0ah: e(kvxe r *.nngth of the electric field

  Is it possible to have a zewio99,mfz dk5:6p uch a(tcpt; dm/t if-k1t+ro electric field value between a negative and positive charge along f9 p ptc i;o+-(w 5 9au/mc:6tkmidtth1fd,kzthe line joining the two charges?

  Is it possible to have a zero electric field value betweeqr d1.h8;k.l)qmm xho3 vrc;in two positive charges along the line joining t vix) mm.q.o k;;qcd38l 1hhrrhe two charges?

  Electric field lines near psitive pu 9d3c)6t2uk8i z osbxoint charges

  The electric field shoe)dn,bwhw8 ) zwn

  Can electric field lines intersect l*ln lp7hy9 5nucz) .*i (icxoin free space?

  A solid block of metal in electrostatic equilibrium is placed in2; dg k7+k1 1sxj r cm6m1jph6zratl9j a uniform electric field. Give a statement concerning the electric field in xcg 61 6ml hr rztdjp9k11j +km2a7j;sthe block's interior.

  If a solid metal sphere and -zj7coc35p82yu qnpya hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sur28pcc5qyu 7zn p- jyo3face is

  A cubic block of aluminum rests on a wooden table in a region where a uniform3+p4ruqr,9t v ehio; p electric field is direoir9eup,43h + q;p vtrcted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an (a77ebr-jf vc electric charge

  A positive point charge is enclosed in a hollow metallic sphvwpr5u 5m 9sk e92nr3sere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dire 5rn9upv5m3e2w k rs9sctly above the hollow sphere has

State three properties o jcjspj*cg 6()gp; m7cf conductors in static equilibrium.

State Gauss's law.

  The charge carried byqay, rua .:.fd 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 +2.00 mC. How many more protonscc f5nlq b4 g;z6wf*5lz4 ghu, than electrons does this piece of plastilglz,f5h 4uc5 6*4fwc ; gqbnzc have?

  What is the charge on 1 k+d .i3e1u vnjr5eq)qn il,tg7g of protons?

  An atomic nucleus hasilmuj1bwl x1;gd7 +1hlx5u ;b a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, 3bg r b5 ii.m:07rltflw b50dohave charge values of 2.0 and -4.0 mC, respectivlfobl:t mbiw37r0r id.5b05gely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second ch q:dwb63zf6, ul 2tnyvj3goc+l1zd z9arge, and the force between them is 1.0 N. 3z wdjgovuc6z2lf:b3+19yq ln 6td, z What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyzcxc 8s.a82g*yruvst u*w( f9?

  The force between a 0n ru3* 2qjusd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expjpn sr5/agmy s:8 hw q,rat93 )di)p9rerience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elect ap3wnt r9h)8) mpiqr/ dys:ar5,9sgjric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fip 7p-1gd4 ppyhma:ftdca:xek.(7 up3rst 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 mph(kt 7py3pmppdc 7xguda -f1 a ::.e4agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is qq/h0gbpy 6f1placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. Wqp61g/f 0 ybhqhat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the folmfn r7jpn a1+ahx8 ,l1lowing 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 ra8mj 1fn pxhn,71a+ lof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of/i (3oa8l..vhdskkq b a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic si(8.qod. l/ khabvk3force 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 x;zsy.bk b:ieaem3),-zvo-3ct y 8o l= 5.0 nC is at (0, 0). What is the magnitude of the net forceys e-3c8 zz - xm;v.be,)a:ty3kolib o on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,lw 7:;6gtka tf 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What t;67tlg:fkw ais the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an .gt)d 33zm .c, aqozl(se8nkv equilateral triangle which measurs.8mte v3a(3 n,loqczkz.d )ges 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges y:t pu 19p ihd*f8izr7of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force a h:udr*pft97 i8 p1yzicting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C:7jexou2h:2 e*stsd7pb ehv2 charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so teth: xe eov27up*b7dh 2s: j2she net force on it is zero?

  Charge +2q is placed at the or2umr *g 6j 5z)jp qt:dvvut,h0igin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed soq t2v6*jupmtgr 05vdz:ju, )h that the force on it is zero?

  A copper penny has aqn 5sd+e 1pl xz5 p*3f5fhmjt2 mass 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 of gravity by the attraction of x2 ( okrk49j*jalr tk .jp6dl(a fixed proton some distance above it. How far abtrk (jx6akjjlr.2*k4do(l p9ove the electron is the proton?

  Two 0.20-g metal spheres are hung f ar2ke vdwuw:rte+4kabm,3 69rom a common point by nonconducting threads which are 30 cm long. Bokw 9d6a+:3,m b2ere ka rtuvw4th are given identical charges, and the electrostatic repulsion 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 isxj miq7- q/s;3.jdla e the magnitude of the electric field at a distance of 7q;eqia./ls d3jj -m x1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dz px8xe3tapc170 w,pl istance of 1.50 m from a 50.0-nC chae8x ,0pt7w3c 1pxal zprge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of j .h;(5wpncwg9eh8clthe electric field at the location of tw8el5 cc.hnw9 (g j;hphe test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatyi1 v 6j9 ls./j1lbgpkimx8,d is the direction of the electi l.1bvidm,j9 j/s g1pk8x6 ylric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnp7e on)*;fofg-b awf )itude of the for-g;a o7f))nbff pw *eoce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each hav0 zo98zhwb uy8gyvw8*b38 pt g*z(idoe a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a * z*z yidpb3w0bog8 88 yvo(8 wu9htzgpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark oiv2(7zsfpw;+.9 mk fiiw biu 0f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isw ;i .zpi(2kvwm s+f9bui70fi the electric field at the 30 cm mark?

  A 5.0-mC charge is placedj(cli8n3-acai uc .7b at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the3ajc- a. lc(ni7ic8bu 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7. ,uigpr5m . (7dflhmt+0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwayhm tdl gur(pf+m,i.75 between them?

  Three 3.0 mC charges are at the three corners of a square ofapw0;fhcbdt:c() ny, side 0.50 m. The last corner is occupied by a :hy(;cn,ac0)bfpw dt -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl/ 7.uuc1 j2bb y8opgtb zb)gw 03 ktxu0xwa66baced 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); -3.0 mC at (0, 1). Whgz jw7ub00 a)6xk/tg8ubt3b1 . x 6bobpuc2yw at is the magnitude of the electric field at the square's center?

  A force of 10 N acts:7jthkbg*tl +x9vue(ph /c)m on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electrickuvc) tlt/(hb*+m9 g7ehj x: p field?

  A particle with a charge of 4.0 mC has a mass vjz8i1)zek l1of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed wm 2k1w (zjpr,in an electric field of 6000 N/C pointing downward. What charge must be pla2j w,rwk1pm (zced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ac bd+cw/93 kjof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude andkj3d/9+c cabw direction of the electric field?

  A metal sphere of radius 10 cm carries a charge o;1- ,f h0gs0rwniwwy ef +2.0 mC. What is the magnitude of the electric fi-gs1h0f n;e,y0www rield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of ++ ameoklvu8n i863hg3.0 mC. What is the electric field 6.0 cm from the center ofm+na3ve8 ig 8+hu olk6 the sphere?