State the law of conservation of electric chargelbjp .-: 91lh zn8wqmmo7l1 qz.

  Is it possible for two negative charges to attract each otherh buj;m+(hgvph87 (k z?

  Is it possible for a positive and a negative charge to attract ln1+dxkql g .z:6n 7wteach other?

  A glass rod is rubbed with a piece of silk5zx5z l7bdy 5wl1 lnd-. During the process the glass rod acquires a positive charge and the sil-l55 7d1zzwnyx5l bdlk

  A proton carries a

  The model of the atom shows11iv2pi2 jbj 9sdhdr ) a

  A neutral atom always has7uvkjxsj ny)9k9dfwt910n) d

  An atom has more electrons than protons9wk*; i+krsilmyx8s b 4+9a ba. The atom is

  Materials in which the electrons are bound very tightly to the nuclei a6 iqhmfz czz944(dc j;re referred to asdmc4 cj4q 9z;z6ih(fz

  Materials in which the electrons are bound very loosely od3tgjl hmz0fv66qou e1d 66:to the nuclei and can move about freely within the material areq vd: f6oh361l6eutzoj0 dg6m referred to as

  A negatively charged rod is brought near one end of an unchargeoky phryb9t w-ekr+ 0g;-85sh d metal bar. The end of the metal bar farthest from the charged rod will be chars+w eh58brg0ky;h9r - pkty-o ged

  Sphere A carries a net positive charge, and sphere B ha axzf32f y.te) ;mv(is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is f(ay;h )tax3m2 z fe.vgrounded. Which statement is correct?

  How can a negatively charged rod charge an electrokk ;*-vngy j ;pc:(w )d9e5be1xdqitcscope positively?

  An originally neutral electroscope is bd:on2lcr +leo.9is 6xwz2a,s riefly touched with a positively charged glascx:o ilds2 r9lzs e, .6+anw2os rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargeu ; *:xe 3e*focjnj8dd-v)q zjd glass rod is held near it qeoj8; zfc 3:*-jjddvnx*ue). After the glass rod is removed, the electroscope

  A positive object touches a neuzj jhi k.d0o5-tral electroscope, and the leaves separate. Then a negative objectzj j50dk.h -io is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object isg) xz,t.xj2;mv s kviip:pc6mh *,cv( placed on an insulated table. A neutral metallic ball rolls mskg,v; tj.)p*xv m vx,:c 2iihcz(p6 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 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 constae mpqxl ,lk-n0q1gksi9z,r ,vhm210e8w zhm2nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ii+hhet2n,x l/mk0 j2 is larger in magnitude than tjnmt+x /2i0lk2 he ih,he second charge.

  Sphere A carries a net charge and sphere B is neutral. They are ppjj)y)paym: nouxt ,7vt:be 1pn+l b,h 6,c8 alaced near each other on an insulated table. Which statement best describe p tnljvycpnx7,eojb+a :h,y) ) ,am1ub:pt68s the electrostatic force between them?

  Two charged objects attract each other with a certain forc43x i+8.pbiic q7mttj e. If the charges on both objects are doubled with no change mb ij7 xcqt i3i.+t4p8in separation, the force between them

  Two charges are separated by a distance d anyroz yp2jf.i+ 3v z8u 7imyw;,f9lki6d exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the 7ffyw2l;kii83 izyu,rym9v+ . op6j znew mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo+eg7lv8g -2wi8znv +cao jlovcr 48:arce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourte4vgr87n2c+ iol jvgz+8v8a:oa lc -wh its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What x uj) wnc94d/tgtm10nvi2fi r e6j0k2happens to the magnitude of the force on the pro d i1c4emwg2 n/it0n jt)kuv92x0 jrf6ton if a second electron is placed next to the first electron?

  An electron and a proton are separa1s,hyh0ydp g/ted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pys/g1,dhy h 0proton?

  An electron and a proton are separated by a distantkifj5t14iz1hj f8 o 1ce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clo1tjt j1h iziof f4851kser to the proton?

  A point charge of +Q is placed at the center of a square. When a secob k.1rfdkxzd 0 d.9/vgk*gd1ond 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 centerk.1d9fxdgk0r./1ko * d bv gdz. 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 placednb7d8c)p+w d q at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostaticpcn+8wd)qb7 d 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 following is not 8 6l vlnh8e5jj4nn4zql- f.ot k6tl0ra vector?

  At twice the distance from a point chajlks 23. .1 j+thlfxuxrge, the strength of the electric field

  Is it possible to have a zero electric fi65g 2z+7qy:ze8 o0nyr7agl+gqswuc g eld value between a negative and positizn6 72ly0sgu5qr+:w q8ggcegza oy7 +ve charge along the line joining the two charges?

  Is it possible to have a zero electric field valuele,i7fuhna 8 - between two positive charges alonhluinfe a-78 ,g the line joining the two charges?

  Electric field lines nearxu6/;nvh b l qiw9 p7v-:zza8y psitive point charges

  The electric field shg pmjp45ayx: (l 6p95kkg, .xnjtgul 3own

  Can electric field line876/v ou/zut l,crttvs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a ug79y0ew/q* yk.agtzvniform electric field. Give a statement concerning the ele zw.09/v qyk*eta 7ggyctric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac q2eu(b4ni;jw h given the same charge, the electric field (E) midway between the center eqi2b ;j(uw 4nand the surface is

  A cubic block of aluminum rests w/co ze(5ok3qv1 u6+uxdr6yx0kqm:w on a wooden table in a region where a uniform electric fielcx 60w+o:u m(6z1 w/rv qo3 ek5duqkxyd is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ay7kcv04 bf9t. qvugt0n electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ivny ol3r ;jkgm xt 6: 34vk)b,xj5)jqgrounded. As compared to the case without the hollow sphere, the electric field at a poyxqrogi)5j j,bj;lvt:)3nx 3 4k k6m vint directly above the hollow sphere has

State three properties of conducto;geb0ktoen7 rg0/6z v rs in static equilibrium.

State Gauss's law.

  The charge carried by onemik/ pr g*jyn4c08w(3vo,b qo 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 s0bv / e:h9n /b r5tkgt*dra-ja net charge of +2.00 mC. How many more protons than electrons does this piece of plastibbrhj-9vas ge ttn// k*dr05: c have?

  What is the charge on 1 kg of p. u5.b.kwezk urotons?

  An atomic nucleus has a charj8 vd+m.xh)(gsget59x3z hvj 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.(wqfu/7cv y8 y0 mC, respectively. What iyw( y7u /qvcf8s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m495w/+8afb:s( dhku* sg7*m3ydq s pr vxdy xm from a second charge, and the force between them is 1.0 N. What is the magnitude of the s um/(9fsvs p*xyd7:yg3 8kms+whd * rq45abxdecond charge?

  Two 1.0-C charges have an- h6lhblsynubxpx7 1((u9qj z f1v85 force between them of 1.0 N. How far apart are they?

  The force between a qa)sc l u27+mcrs2 ,l -o/tpqnvmq8.m $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiex5c8y( xbnd.p cm)0auh- kq +qz i iu.hul4h56nce a 1.0-N force. If they are mu5h h 0i.c.)qc 4 d(y6liqunpha+xkbu8-z xm5 oved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are place6 a0r-qmn)mmr d 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 cmm qr 0)rm-an6harge at the origin?

  Three point charges are placed on the x-axis. A com4 kq gq( 3nup)c.jw8*ejny.harge of +2.0 mC is placed 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 .enn *cmj)(o8gqjkuy4 pq.3w and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges agmv7p*w7d 6ndg k uw5-xaqbhha96h/7 re located at the following 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 the force on the 3.00-mC charge6 7/qwda96hubpnxa7v57 hk g hmdw g*-?

  A point charge of +Q is placed at the center of a square, and a second p pu7/gxi f93txoint charge of -Q is placed a ip 3g9/fxtu7xt 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 =ot2pz raq0n d78l 8(y:x4a zcy -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 58z( l:8d72ozq4 0txyr anyc pa.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, e c qtg 7ljnz-5p,1(vtvkty*6 0.10 m); Q3 = 5.0 nC is at (0, 0). nl 5 jtq7et6 t,g*zp-v1vkyc( 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 an equi7 qdje,v7(r xk/ )lnrhlateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the ,7 nk/r lx(j7qe)vrhd charges?

  Consider point charges of sj7.kq x-4t4 tkpm ;36kch 7cxpv d/zi+Q and +4Q, which are separated by 3.0 m. At what point, ci t j7h6c4sp-x4;x7kz.p/qt mkd3v k 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 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4. ,t1 c3pwn0p.2g* le2hts2vuapov(a o0 m. Where on the x-axis can a third charge be placed so the 3awv.20al2 h2spo,e pu1(tp vno gct*net force on it is zero?

  Charge +2q is placed at the originys01d)htz, )p/ijmc-) bg odd and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tc0ti)d dzb/jy doh ,))- spg1mhat the force on it is zero?

  A copper penny has a mass of 3.0 gqg5fvr-5nk* v. 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 gravamm jq j3w.svry89hwu)2 7fh7ity by the attraction of a fixed proton some distance above it. How far above the ey ujam qr3ws8.7f wj h2vh)m97lectron is the proton?

  Two 0.20-g metal spheres are hung f+u3;fr(n8 c m99zl 2/ ajagmx1mvfiol rom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart ua a;9vm+mign 89 lcz l3f rx/oj1umf2(ntil 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 o6h8s;n )b:w(ts t.)2 ij,ksy knvj ooelectric fie6;h(t.o,w28jy)j) bk:vnktns si o osld at a distance of 1.0 m from the nucleus?

  What are the magnitudeefg,)j s(x.(v6sbt bx and direction of the electric field at a distance of 1.50 m from a 50.0-nC c bx6b(s ex).(gtf,svjharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudfusxce o6+x)+ e of the electric field at the location of the test cha o+u exc+fx6)srge?

  A 5.0-C charge is 10 m from a small*gh /zdoziekx5 p-w+43t qa q/ test charge. What is the direction of the el /zz3e h-oxqgp id k+atw/*5q4ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magl:(6do; hwio 0 3kbbcvnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargl(okb ;v0b63 ic:wdhoe?

  Two point charges each have a value of 3.0 C and are sepzc:dtm9zd- wrvyq*mj ); l5z6arated by a distance of 4.0 m. What is the electric field at a point midway between the tqd) m;*d zyzlvc w6mr:9-5zj two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofb +lwtvj/ :vg- a meter stick and a -4.0 mC charge is plac bj+v:-v wtg/led at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thqg+ ckkj7e hqs3b :fp8/ n,6(xjhu9hd e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. kqxh7k3f: q9ch hp+ g8jde( jbu6 sn/,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 ;t*jtm 7*h1qo qzkk(lbwso - +o0;d9 rm:nkyr x = 0 and x = 0.20 m. What is the magnitude ro*qkrt 7bw;(o jy9s:d;-0hzko qkt *n+mlm1 of the electric field at the point midway between them?

  Three 3.0 mC charges are at theu*tf/ k ijbcxl r6h..a-1b 1gmju(k: p three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ch1(1:*bjgj- .xa mhfukuri6b/.tlpk c arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners oh0rjys m tpa2w3y )2n(f 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). What is the magnitude of the elejh3r(2wnsa0mpy yt )2ctric field at the square's center?

  A force of 10 N acts on a charge of rr5(0du y old8nol)tx u*v g;(5.0 mC when it is placed in a uniform electric field. What is the magnitude of this eld)5l(t(o8 uv drxo nu*yl g0r;ectric field?

  A particle with a charge of 4.0 (hi5:hxt zqq s8+ xd(imC 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 0.120 g is placed in an electric field of 6000 N/C poii+9p3 4qrvq:nv3ih dk.bm)b o ntingkp io)q vdnrv.4: hm9+b3qb3i downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0 d*)rc8 j6v6khxec2fd0 nC. The ball is placed inside a uniform electric field, and is s*de) 8v6 jk2fxcdh 6rcuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha8 yom1anb) 4h +ib)ferrge of +2.0 mC. What is the magnitude of the electric field 5.0 cm eno h4r+)m)f8a iby1b from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whwypv0op p 1) zoa55um:at is the electric field 6.0 cm from the centeyo ):z1u505 wavpo pmpr of the sphere?