State the law of conservation of electric/l,e0icg(o(fl q(gg1jt e2 df charge.

  Is it possible for two negative charges to attract each opw ; d/7bxh/12yb lieither?

  Is it possible for a positive an:3mny(ssa ,xw;8f x2c25oe yk(boannd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durin tstm5 lz6+ om1q8i5pcg the process the glass rod acquiret 5oil 8scz61qm5m+pts a positive charge and the silk

  A proton carries a

  The model of the atom showd3dh j rs2qw6m;z 61eotihz dc.2t)7vs a

  A neutral atom always (ilu0iz x5o7c4l+ req+ pdx*o has

  An atom has more electronp bb 1)p2/xngws than protons. The atom is

  Materials in which the electrons are bound very ssx+b.nkp:c h3nt0;j8 ) niqjtightly to the nuclei are referred to )jkpjn b.0i c +3n8q;h:xssntas

  Materials in which the electrons are bound very loosely to tt.ye;n8b e7;-lo srzjjwhevs 5x4 8dzj(6 ke)he nuclei and can move about freely within the material are referrv5jkn;eo4 j h 6lx8zebe -z.78s( e)st ;jwrdyed to as

  A negatively charged rod is brought near one end of an px+5qmjh :5 .dq;ya p-ju.mjduncharged metal bar. The end of :.p y- qdj+adxj5 pm5qj um.;hthe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chargel 0o+kt2qazl/a4i9we , and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touchak 2witzlqa /oe l+049ed with a wire that is grounded. Which statement is correct?

  How can a negatively chargeu*cu(mm1k e ;/hnu+z - t elc+d0my-aed rod charge an electroscope positively?

  An originally neutral electroscope is ble*o,sh0 x ub;riefly touched with a positively charged glass rod. The electros;o* xu,h0lebscope

  An originally neutral electroscoy4uvm:-wy b; dpe is grounded briefly while a positively charged glass rod is held neab:my4 -vw; udyr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavec b)28ibv6hxq s separate. Then a negative object ib6 i hvqb)28cxs brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla6)flbrp/5/n itxe- dkb0d xn2ced 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 ball rolls forward, but does not touch the negative obje26d5lbi0 )rx/bde-kp /nnfxt ct. 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 Co97k4a 9wq8c*v pw jstmulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ar-thdzf /,.dit e separated by a distance d. The first charge is larger in magnitude than theht - fzd,it/d. second charge.

  Sphere A carries a net charge and sp9p 814r.4x1p.hdm kg3klc/l fhophbfhe 8x k1here B is neutral. They are placed near each other on an insulated table. Which statement besthh8.kh1xl. gl k1dhx44co 18kp3/bf9fe p mpr describes the electrostatic force between them?

  Two charged objects attract each p,t5r -w- zsrthrjrs:hf9 p5.other with a certain force. If the charges on both obh,rwh5rps5.r 9rpts f-z tj:-jects are doubled with no change in separation, the force between them

  Two charges are separate(ozfz; 0djaut7s1h1 owdg)6 xd by a distance d and exert mutual attractive forces of F on each other 1h7djgo s06wtzo)a;d( x1zu f. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth pyqzucd4 sn -/:c 1v8b+esvn:er with a force F. What happens to the force betweb:qnes:4v z/dp-c +yv8 1scunen 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 separat 2hy0b2 1w3pltpj4bb eed by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is p2e1 hyp l p2b4t03bjbwlaced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to a8m ; k48.zirov9kpgx the magnitude of the force on the first electron if a second electron is placed next to the kmz4pov.8ki98 a xgr;proton?

  An electron and a proton are separated by a 2sv y,ahtbh3-i7, m,0fcic ny distance of 1.0 m. What happens to the size of the force on the proton if the el0t2hbcvs,m7cfh-ai ny y3, ,i ectron is moved 0.50 m closer to the proton?

  A point charge of +Q +xizp cm jng.lz;qd: zyw1::6is placed at the 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, idenxzydw : z.:1g;znlqp:m6 +i cjtical 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 at the centroid of an equilateral t qr4 reo4e-*e44jtkn uriangle. 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 duqjeutr ne-4r ek *444oe to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a v -x5ot+ 6orr(8vp:w f itmmr(eector?

  At twice the distance from a point kkk)b*bc8x-(c 2v/ ,brxwjv sulf c62charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posi .n p+nvh+u+vktive charge along the uk+ + npvnhv+.line joining the two charges?

  Is it possible to have a zero electric field value between two positive cq1 ;23twaxo sqwd4tb 0harges along the line joining the two 041t w;2b qx3sotwdaq charges?

  Electric field lines near psitiv2f)wien/(lipi n 0eq )e point charges

  The electric field shown:eqa2u:)sk )rgy jly)3g7jcyczm0 + j

  Can electric field l/f 2h7 -a+l )cv0xns dqoufmge(7+ hinines intersect in free space?

  A solid block of metal in electrostatic eq7; pfig vd ojw1;7ir)luilibrium is placed in a uniform electric field. Give a statement cowl;jvrpgoid;7 )i 71f ncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete4:1eiedal v y(rs are each giv:eey ial 4d1(ven the 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 regio wt-d/huvhb/ t1stz94n where a uniform electric field is directed straight upward. What can be said con tdvszth49/bu-/ 1wt hcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilid.batc)0 wln-3. zmy t,nuz6jbrium near an electric charge

  A positive point charge is enclosed in a hollow metalg* j6;yddd ayw9+knf7lic sphere that is grounded. As compared to the case withoyd9k*7g nwddf;ya6 +jut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in5o8vvw phq:+d;w;c z 2y/ke/p j: vwqo static equilibrium.

State Gauss's law.

  The charge carried by one electron iy2q5, l:p26 vvj xl-toq srkj 1sbnn8,s $e = -1.6 \times 10^{-19} \; C$. 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 moret:c85*gkzahtyq:, /b/f f )cpdes m64ek/t wl protons than electrons does this piece of pla )a ef8emdgz4 k5wlth,:/cyq *6s /ttb:/pcfkstic have?

  What is the charge on 1 kg of p(kxqx92e,db lrotons?

  An atomic nucleus has a char 2k ukm+euy.a:ge 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, have charge values of 2.0 and -4.c+/e+khcoss - 0 mC, respectively. What is the magnitude of the electric-ockh+ss ce +/ force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thebe0: kma5;bs ylj;0kwz,m + nom is 1.0 N. What is thez ywj5bmlkoskmb0 ;e:0 ;+n a, magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 1(q*rq0 *lyxztd yyr;n -5cjr How far apart are they?

  The force between a m+1ycc:a o lc6m /xp;u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, xic k-g s-6+kylmd;n7 experience a 1.0-N force. If they are moved to a new separation-n ;6dsg7 lc x-ykk+mi of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arf,wq2ezy;l b),1qujoh q+8sq* mgd ( ce placed on the x-axis. The first charge is at2 + bfo*wd;mjglu,hzeq )q1sq q,(y8c 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 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 pynon:c ,e7 y*olaced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic f:*n7oecyy n o,orce which acts on the charge at the origin?

  Three point charges are locaq/27wgijl tb5gq x 15bted at the following positions: Q1 = 2.00 mC at x = 1.i57qbjl /qb15xgtw2g 00 m; Q2 = 3.00 mC at x = 0; Q3 = -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 pk 2 y,1cv2qzdp b*,yeclaced at the 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 charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is b,vdkze2 qy c y*c2p,1placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 u 2w,cwo 1p7z 1c5g3jd;qdjeda bj* )nnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude ofu1 wnj7*jebd;j wg zd5oa1cd )p32qc , the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0 fa9f pw 5cwt)oj5e9a+s9kvm(); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, m(s ef9f) pj+59wk 95wtcvoaa0). What is 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 a4dk63g+n kbw gn equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatwg 43bngd6+kkic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whathh j2ybf :)vl+ point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would jvh b+:hl)f2 ybe zero?

  A +3.0-C charge is at the origin and ax60ypiy) f ldt)mm6yzx77 ud0 +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force o6i7xmpf 7y0d0z dmlyy6) xu) tn it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =cuvwe n7+;q) l0ru:qz: / bknd 2a. Where can a third positive charge +q be placed solwre+q nkb u;)qnvdz:7uc/ 0 : that the force on it is zero?

  A copper penny has a mass of 3.0 gjxnv9, +ujlxp 8qj 2y1. 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 gravit. k(l, w ,8ss8c-( egzqixdgfry by the attraction of a fixed proton some distance above it. How far above the electron is tg8gr 8fexqz-s, ( swidkc(l. ,he proton?

  Two 0.20-g metal spheres arf2 we/*wox6*zm; som.7jkzyy e hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle wy okfmo2*/;s.mw7ex z*j6y zbetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has 9)w(rd7sox mt mh n1qj04mw1pe yb,t+ a charge of +40e. What is the magnitude of the electric field at a distance o 7 p1tom9tyh+01m)smbx j w4qwr, ne(df 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1o:) ep1owyy3nbroa d /b1q: s,.50 m from a 50.0-nC chargbo:,ywdyb q3r ):1nea/ 1s opoe?

  A 5.0-C charge is 10 m from a small test charge. Wdxgmj; q7 y/5(qe*;npl0 kdvw hat is the magnitude of the electric field at the0/5*e vyqlj ;7nkg xp(qwdm;d location of the test charge?

  A 5.0-C charge is 10 m from a s c my+ z:ywl2:ihpc3/u*+ezprmall test charge. What is the direction of the electric fip+:zc3 he yz+u/ 2i*my:cplwreld?

  A 5.0-C charge is 10 m iiz,lk0f qquq9l.8):b2qo w yt;(rj rfrom a small test charge. What is the magnitude of the force experienced br;).0b:(q tyqlilju,q8w qo 2 9fkzir y a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated byto3kc*9c;v yjw hwm/wx4xn/7 a distance of 4.0 m. What is theckx4 /vj*w73otxm9cwyn;h /w electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of fe)z 83:m:ymv;tmnrj a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is ); t: zyrmjm8me:f3vnthe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a -cm x-hrf*ot(meter stick 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 electric fieldc h*mx t-fr(-o zero?

  Two point charges of +3.0 mC and -7.0 mC are placed apzlz;4ndfek/z3d:*c q u iv.p6jnx:,t x = 0 and x = 0.20 m. What is the magnitude of the elecf n/p6pc z:j4dl,i:dneu.qz ; kxvz*3tric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. :o 7mkd66k prr The last corner is occupie:rmp76d ko rk6d by a -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 place+a/t /* 2)ppaogoyk j0fo*umvd at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (10ao*m vaf+/*put)kyp / o2gjo, 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 placed ino4gk esf )f),f a uniform electric field. What is the magnekgo,f ))f4f situde of this electric field?

  A particle with a charge of 4.0 mC has a mass of z0b8c0zgo) pm io 1hh),r,lys$5.0 \times 10^{-3} \; kg$. 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 electriz5pj4 mbpslg3zw ih)ry9zi+ tu6 6:0t c field of 6000 N/C pointing downward. What charge mustyw3tuib hrzmjt) p+l g:9zs5i664zp 0 be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.nrx5x3a9ps 5a The ball is placed ins559 a3rsnpaxx ide 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 radius 10 cm carries a cw-pvhe or5,x z:/ntd p;wf9u9harge of +2.0 mC. What is the magnitude of the electric field z:99f or,twhx/ -dv 5;epupn w5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e(i ciahz4xn6 -lectric field 6.0 cm f xhnc(4ai-zi 6rom the center of the sphere?