State the law of conservation of 1or :e-8oirmr electric charge.

  Is it possible for two negaugj gz8o 7ib 08eqos4:tive charges to attract each other?

  Is it possible for a positive and a negative charge to attract *hlkovl,nzb ,u )fe+) each other?

  A glass rod is rubbed with a piece of silk. qs c6 bfh*; mb-b/(zgu During the process the glass rod acquires a positive/ -6ucqh*fb m gsz(b;b charge and the silk

  A proton carries a

  The model of the atom showsdml-0-t3-rmr o igu4 i a

  A neutral atom always hasn5+v.h2q j py(cbd8g k

  An atom has more electrons t7wako6. ha5hk8l-j 5+h v y4mek lfiq(han protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arl2xhmje3.kg9 xg4 h3u6cku.y e referred hk62.xj 4cexg kg3m9ul.y3 uhto as

  Materials in which the electrons are bound very loosely to the nuclei and can 7tmcyhyyy;o+n r qhs69 a(so5n )f yzu-0 (6memove about freely within the material are eyyt(ouzqha0m5 ysn)7f n+om6yy(96 -h ; srcreferred to as

  A negatively charged rod is brought near one end of an uncharged abpj *jjw+4-ometal bar. The end of j +jbo 4ja*wp-the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placevw ;,gk)1 r9ipsgo8 wjd near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whgrw 8;)sopiwj,vg91k ich statement is correct?

  How can a negatively charged rod charge an electroscope positiv/wdoprf8 8di+ci-y8pely?

  An originally neutral electroscope i7w 2bazy ;k+s0 6 sihwpelcy45s briefly touched with a positively charged glass rod. The electross5kews+p2 wz6haybl i c40y;7 cope

  An originally neutral electroscope is (fhi l.3a pu1hgrounded briefly while a positively charged glass rod is held near it. After the glass rod is removed.(ihphl13fa u , the electroscope

  A positive object touche it;,nec 817- hp;urchuf+tv;jeq ls3 s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does;3p,hjc ;evt l7esu1+fu r-t;8qcihn not touch it. What happens to the leaves?

  A large negatively charged object is placed on j mg of kvliunw;+v:y;63fd22 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 notfnki vvw l2o d;mfj2 u6+:g;y3 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 constant 2l 2zcprkp6j8xhn+-i $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c py: *txudn kbxk65b73harge is larger in magnitude than the secp6k 753y txxnbdk*b:u ond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near 9wl11eco4f3leb u gu ;each other on an insulated table. Which statement best describes the electroswf13eo94 1gucl ube;l tatic force between them?

  Two charged objects attract each other with a certain force9 k/ff8c xu 6h:x1db60mqaf bi. If the charges on both objects are 6fb fh1/ :ma9b60xixcfu8d kqdoubled with no change in separation, the force between them

  Two charges are separa-ll3rj c+u(i c,9p symxso:8d7 *ihcoted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new l73msdcsxi 89,ucp:y ilr(choo j +*-mutual forces?

  Two charged objects attract each other o f btwa u7w+ge8)j,kr/0dvq rl 0go.: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 between their centers is reduced to one-fourth its original value? The force is vf gkqrjrlo+,.ow edw0b:)8t/u70ga now equal to

  An electron and a proton are separated oo oz9ode+*h7 by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electronh oe*o+o 7zd9o is placed next to the first electron?

  An electron and a proton are separated by a distanca4i l6 g5nsy1ge of 1.0 m. What happens to the magnit a61g5l4 yginsude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance o4 rbed+zlj/,j6o 6pskv*j .qaf 1.0 m. What happens to the size of tzkdoja ej.*6v sq,/jr p4 6lb+he 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 center of a square. When a second pht iodo +.l+;n /fyjnnid,.oni0sr79oint 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 nl; t/yi9o .onij+nhdd rs.0, n f+oi7the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placedruvmg3 l/9h (u 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 it. What is/9ghu r(l3umv 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 v +hr )0n6 )r7e6cqfzwpruglu0ector?

  At twice the distancehuio3x7q7 5ge from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativ*zpe*cwzyhq5l a *.0in9 pk0 d 8axq-we and positive charge along the line joining the twwx9 *q8-.w*pq i*hac 0z0ay5lepnkzd o charges?

  Is it possible to have a zero elect 1 lbb+xgbc36l(z8i htric field value between two positive charges along the line joining(bil8gx hl3 z +c1b6bt the two charges?

  Electric field lines near psitive pu l r7 jhz2s9zuvl2.x)2hp kw,oint charges

  The electric field shownp3m*2x3hs; px jygjc(dp0l p7

  Can electric field lines intersect in fmqf7rjpe/-wd5o v9 m+ree space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec1ipgm3 hx69m dtric field. Give a statement concerning the electric field in the block's in 19mx6hdg p3imterior.

  If a solid metal sphere and a hollow guzxqsvlw jd 7:-)x; 0metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centerw 0dx)7qjxvl-u;z:g s and the surface is

  A cubic block of aluminum rests on a wooden table iij* ,s*dnm q7py7l4t wxdt5fuz(94g bn a region where a uniform electric field is directed straight upwaw*sqtm xdb,p44*u5zy7 ( gn7dt9if ljrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ar. d0p7lbzl;bdhz* h)n electric charge

  A positive point charge is enclosed in a hollow mpkr+tf-ck1y * j) in:jetallic sphere that is grounded. As compared to the case without the hollow sphere, th-)jirtn *+ f1kpy:kjce electric field at a point directly above the hollow sphere has

State three properties of conductor b dnx+,: diq a+d6en fa3:3rhmema-;as in static equilibrium.

State Gauss's law.

  The charge carried by m0 /k f7k/leg2syn*lmone 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 mora5c7n(zo cn)5wx; id71 dh4 p nc*uyjje protons than electrons does this piecz j45)5jnxnan 7*ydho;cd w icc7(pu1e of plastic have?

  What is the charge on 1 kg of prolhr)97r7rp ur tons?

  An atomic nucleus has a cha;1alxeqt3mc gt)9n:p rge 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 -4.0 mC,x f, y2z.43rhx.urj gd41r*h9ak9wmvjn d -ox respectively. Whath,w x.4nrxgzod-*uj3vd9fr. y2h jr mxk49a1 is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and;ufoo+d1hf 1avs3c/r sx )/ zg the force between them is 1.0 N. Whgfsr as3c+d vo1/1uz)xf/; ohat is the magnitude of the second charge?

  Two 1.0-C charges have a force between; thb(ge2(o ,inb -eqd them of 1.0 N. How far apart are they?

  The force between a g dyi0+m,fl 3a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N fo ro.j(j1t 5 a)-sxmdpnrce. If they are moved to a netj(pd 5 sn1r a-m.xoj)w separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pw w b+0-hzdx8jlaced on the x-axis. The first 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 electrostatic force which acts on the chax -8d0bw+jhw zrge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pla t*rvda2+tu j z,z7w5gced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 ct rjdzz *52avt+7,wugm 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 followehpg1e t6 o51jvs zdygkv69)9ing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC atv1d9ke ) 5 p o66zgehyvsg1t9j 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 placed at the center of a square, a +lozq2- c7bmqnd a second point charge of -Q is placed at the upper-left corner. It is observed that an electrosmz2 b-7c+loq qtatic 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 m8m jjpq.hji.v4 sim) rbc,+7z, 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 forp+im, schbm7i q4jzjvj.)8 .rce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC iseb5qp y ;zqhc tujh1m+g/n+3rc ::*j v at (0, 0). What is the ;:*vue/mr zpjyqq+t: 5 hhc jg3c+nb1direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver3 r/8q *f yko4tv+adr3h- cqymtices of an equilateral triangle which measures 30 cm on a t -*m8oyrv4y3fc+rqqd ka 3h/ side. 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 by 3.0 m. Afxm +ce z/orz8h : gwk*i-b0k.t what point, on a line between the two charges, would it be possible to plagm:kok.*w- 0 bre8f+ ixzzhc/ce 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.sr :0*.ut xskf0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedu.f0sk: *xtrs so the net force on it is zero?

  Charge +2q is placed at the origin and chargojbvf28u0h3 ve -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero?boh3jv28v0fu

  A copper penny has a mass of 3.0 g. A totl ej9yset6vq n9 .t/gxad+f )3x9hpz9 al 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 aga *bp4gpp(b rou+*h vzagtv586inst the force of gravity by the attraction of a fixed proton some distance above it. How far ba p*hzobv tg*4v+gp8p56ur (above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduflq 3j)n cn/i8cting threads which are 30 cm long. Both are given identicqcn8jn/ i)3f lal 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. Whati ,bz,ip (uud jzv1 4.mfl6y3g is the magnitude of the electric field at a distiu 64y .,izfb3plm ,vzgjd u(1ance of 1.0 m from the nucleus?

  What are the magnitude and direction of the -j:zfvwnr x(5;y5 iv v7m ugrvnd- )o5electric field at a distance of 1.50 m x 5-n-)y;vgw (r5rvv d:nmvu zji5of7 from a 50.0-nC charge?

  A 5.0-C charge is 10 m fro+0j6pd7oqm0xe ih8tw a j8k- um a small test charge. What is the magnitude of the electric fieh uw q8k7-68ejj pdtiox0+0am ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small tes c2qu3sl)mq u2*cv 6avt charge. What is the direction of the elevavmc*3u2q u2cq6 l)s ctric field?

  A 5.0-C charge is 10 m from 7 btptohp. c01a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge plct bhp1t0.7poaced at the location of the test charge?

  Two point charges each have a value o ;uwco. 5qqsf2evp3 7jgu :bh/f 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway b75 s;ug /cbuoqq e2p:.fhjvw3etween the two charges?

  A 5.0-mC charge is placed at theyshy2 j b7o +gzto1n45 0 cm mark of a meter stick and a -4.0 mC charge 4n57ot1gb2z yyojs+ his placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at ta: pd dsovjm;c 7/+(equu- q)ahe 0 cm mark of a meter stick and a -4.0 mC charge is placed a+ -:aqjs ;ueq dd)vma /c7oup(t the 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 -7.0 mC are placed at x = 0 and x = 0.20 m. Wh32 ec2c 3s-t-ts*jesfxbu l6d at is the magnitude oftf l sst236-j-sbdx c3cuee2* the electric field at the point midway between them?

  Three 3.0 mC charges ar49pknjv z23lke at the three corners of a square of side 0.50 m. The last corner is occupied by a - nzj k9vk3l24p3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on d6x.rx ck4;g7x2kcg ka side. Charges are placed at the corners of the scggkr xx ;k2.6 7d4xkcquare 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). 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 /2 8p9 bqgikieit is placed in a uniform electric field. What is tbq/2ie9 8kgpihe magnitude of this electric field?

  A particle with a charge oqtp6a ie ;vvf90v:2 lu6onks3f 4.0 mC has a mass 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. qbt c8y/;fmlnvr.u. 7120 g is placed in an electric field of 6000 N/C pointing downward.n l/.b;yqt crmu7fv8 . What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.1ptyj7*,.3ap ty:nv ir50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electricap *i37:,tr.npjv t yy 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 charge of +2.0 mC. What is the magnituz:ypf45b1d kdxby2,r cdcc7 + de of the electric field 5.0 cm from the sphere's surfacdx 2 :bf4cdcy,+dzy5c 7kb rp1e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electri+ pqqsfo(sn6u;f5z2 qc field 6.0 cm from the center2q(f 6+ poz;s5fnq suq of the sphere?