State the law of conservation of electric -5tvqp kcp 4w5ijc3j9y 3 g(ymcharge.

  Is it possible for two negative charges xnw6i 0al+.cl 3c/gef to attract each other?

  Is it possible for a positive and a negative charge to attract each)wl4 jo6 f4hw04yex l)cuwu)o other?

  A glass rod is rubbed with a piece of silk. o7ew:ve btr*8 During the process the glass rod acquires a votew:7b*r e8positive charge and the silk

  A proton carries a

  The model of the atom shox6+.v ) 4rle4m3v -/wdl hhctwv(avmy :hluh 2ws a

  A neutral atom always *anzf0w or8x-has

  An atom has more electrontfc6izk0 pyo6/ 1sg u(s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei nsm xy) *cw.l 9zj ot2a.p0:vrare referredm)w0 9r.st z xvon.la :2cyp*j to as

  Materials in which the electrons are b- n)co0 d)sslmound very loosely to the nuclei and can mol-)s 0d) socmnve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an u1 xk x1cigcn v/z0bl**ncharged metal bar. The end of the metal bar farthest nlxvbcx*g/*i1c 10kzfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theybju dnolp3 g8,.(oeoyge5jj-4v7 ar( are placed near each other on an insulated table. Sphere B is briefly touched withg go5 o,- o ulayj37r8pjev.nd((b 4ej a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco pv hy-on s*(/gwqc,m:pe positively?

  An originally neutral electroscope is brieflf6h dsv4u28 jaaew4;ny touched with a positively charged glass rod. The electroscos8jvea;u4h ndaf w 462pe

  An originally neutral electroscope is grounded briefly while . mf5 j-x5yxb 4dn5lffa positively charged glass rod is held near it. After the glas5fl5- f bx.dfjxyn45m s rod is removed, the electroscope

  A positive object touches a neutral e xf1/czs s,cvx ,(g*ei+ry:wilectroscope, and the leaves separate. Then a negative object is brought near the electroscrz ,c:/+x,iesvi wxc sf1yg(*ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed om +e-bq 48syxa6 q/smnn 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 bys ya /e6mq+sx8 nq4-bm 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 o2oo*twem8mg 6jn 4w0hdi n ,.Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.r6 5x-ga:o+ )sucb6a dt)oxqu The first charge is larger in magnitude than the sec u6d)tbc-aog+ rx6 )sx:o5uqaond charge.

  Sphere A carries a net charge and sphere B is n8o .+*r7j el gokfio0zeutral. They are placed near each other on an insulated table. Which statement best describes the elecrj*koo0gl7zef. +io 8trostatic force between them?

  Two charged objects attract each other with a certain force. If the u,y hg0 a28oqg,lp k;2rkabg 6charges on both objects are doubled with no change in sepu h2 k 8ga, pq6koy0bgal,r;g2aration, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces a 3z,yp*s m*:w1snhb1mp/ g4lb dil,l of F on each other. If the charges are separated by a distance of d/3, what are the new mu31 4y,lb* m llhs p bmpiwn,zgs1d:a/*tual forces?

  Two charged objects attricio0ckn--xpsovy* fr+jhl +5cbc+39lq o 2:act each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separa9c-y5qbhjvcsox +fi*l c+i02copl + r k3o:-ntion 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 disd r.oypi)nna6 - k3yg5tance of 1.0 m. What happens to the magnitude of the force on the ykopa.6i3 -n )5y nrgdproton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1. gcq z)lk30:zg0 m. What happens to the magnitude of the force on the first electron if a second electron is placedkz:)03c lq gzg next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What0*p yp/ cmzffu*)t4 8mp,vi zl happens to the size of the force on the proton if0*c itz zypl48 )u,fpm/vfmp * the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed atzf +cyng v2 vn(-2+yum 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 forcefvvy (m2 zun+gn c+-y2 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 at the centroid of an equilateral triangle. Whe.fohn 256n:dr sp a1+2nlzwctn a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of s5np62 aw1r lz2+f don c.:htn4.0 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 followin;//:hpy kv qsyg is not a vector?

  At twice the distance fromw 3.3 rxm0sclb a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative 3my .fw cv8s1uand positive charge vfy 3mw8sc1.u along the line joining the two charges?

  Is it possible to have a zero electric figt hosjn. i+d q:6gtu 8:2k04kx7 twvheld value between two positive charges along ot4g2v.s qgi:k6hhux8jkw+t :d n07 tthe line joining the two charges?

  Electric field lines near psi( vrei4s k75j yttx62 .yryiz(s dn.w7tive point charges

  The electric field shown 9ucnjy,d;c.y :kc+ wr

  Can electric field lines intem/ e aw; 2:p fh8vk:q-fc:qhuqrsect in free space?

  A solid block of metal in e oe1zuydw-4nr/,v f(5cqfg-y lectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fyfn4ucv gfe/z wr--q(5d, o1yield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arq2nt( xw,obh9 ;n/ylhe each given(l/b2; xqo hnwtn, yh9 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 rh9y)+e9 b 2ip -6mvqj/ xdbwojegion where a uniform electric field is bv6i) d ombjq-pe2 9h9wx+y/jdirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr+0y49 ahwm: zg n1i 3lueohr1kic charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedh4( hh3yynf3y sq (uhl(aw gyhv)r 6(7. As compared to the case without the hollow sphere, the electric field at a poin6yy4y hl( )nfhyg(3qw(u3h hh rs v7a(t directly above the hollow sphere has

State three properties of conductor)o(mhgy .be;* sirm ,gs in static equilibrium.

State Gauss's law.

  The charge carried by onza s ;3v q 5n6lqs7owfp4qn5o8e 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 ch:v9y3svai 8 fak7ek+ oarge of +2.00 mC. How many more protons than electv7i9 3 a8:+y vkoksfearons does this piece of plastic have?

  What is the charge on 1 kh uuz3mlzeak)m 5 h665g of protons?

  An atomic nucleus has a charge of jv21x 8kingia*:9zxj $+40e$. 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 vwl4wla2jr/w 5 fir3n 8bu 21ikalues of 2.0 and -4.0 mC, respectively. What is the magnitu waf5/3lk8ulw rw2b1rii 24njde of the electric force between them?

  A 1.0-C charge is 15 m:v- j 71ftdrk8sasfgka6 f ;hegcz(11 from a second charge, and the force between them is 1.0 N. What is the magnitude of the second charg1jhag;:sef 1 k8vs76(tf ar d-fkz1cge?

  Two 1.0-C charges have a force betnk5o194 ghu lrween them of 1.0 N. How far apart are they?

  The force between a b 7b ).lp*oqfj,qf e9t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencej:uvf)a0 *z* at9yzzf a 1.0-N force. If they are moved to a new separation of 8.0 * zz)f vtuafyj* :za90cm, what is the electric force between them?

  Three identical point charge8)(v/b4uyvk8g hhx8dzsg-sf5to- gu s of 2.0 mC are placed 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 8-dg) xsf 8sgtb8/k5 o u4(-zvghyvhumark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on).+2a8nrbt un *ezt be the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = t u8.+a b2rbt*nezn)e50 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 d14 x u6qa e9mkgnbjd6dy9 s4,at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 my9k 4,d4 ubqsjmd619xa6 ngedC 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 squar,x2. hl*d5*cuyu q r c*-caplze, 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 accdcl**h5p, u *l2ac. yxz- urqts 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 y-w*/stm5 +qj ggwmj/at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the m-y tqw*m/ w +jgjm/s5gagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 40p7x:/hfaj66bjj,e z crrvs.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction orhrvs6a60 x/bfec jz 7jj4 p,:f the net force on the 5.0 nC charge?

  Three identical charges of td 8m,, oh/ghff72ox*mity; a 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is thg y2mft *d;,h,mfhxo /oit8 7ae magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which a2)2nabdb-mf0x g-prtd uz., ore separated by 3.0 m. At what point, on a line between the two charges, would it be possible to plagd2ut0fnor dz2.a ,-b) bp m-xce a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is an *6p p(k9+ xhu5megeat the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis cukp5m *x+panh9(e ge 6an a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin aq rzqi3umye6 4*3ut :jnd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thau36*:mq u qt4 je3yrzit the force on it is zero?

  A copper penny has a mass of 3.0 g. A total k8k ju 9)quair/81oyb /wr)dd 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 a fixe)n igkjf1ia9 (l2b/bx.kay4wd protx/b2i1ifa9gwkj.b ) klya( n4on some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaau5 k ps-6dh87ejws*jds which are 30 ch56aedpsjuwsk *87 -j m long. Both 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 is the magnitude of the electric )( xwu,(egauk field at a di)(au(w,kgu xe stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of uuka ,6*gn1+5gc fq p6lbm,l r1.50un+mb*cg lg, 6lf,1qr akp56u m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from lii+e7 fh xmd0 (u(r;da small test charge. What is the magnitude of the electric field at the le rfdxi(d(0l;mihu+7 ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is m)kxgx -oz9-z3tcfj 4 the direction of the electric fzz39 o-)c-fgj xmxt4k ield?

  A 5.0-C charge is 10 m from a small test charnyaw8gm ;w t) jb 4*q62*naxdnge. What is the magnitude of the force experienced by a 1.0 nna) 2yn4qd*wbn; m 8gjwta6* xC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and areblkep,sr6c ay,l;3 j7 separated by a distance of 4.0 m. What is thl r,ces;6, apl3jyb7ke electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s *la8u) fppg uk+,;-oudgqw,r3,fze rtick and a -4.0 mC charge is placed at the 50 cm mark. Whud 8)zke+;- ar3,,ol w *qurf,gfppugat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charghhaz/1mq5 .g yib4 2rh :ft*-leuaea+e is placed at the 50 cm mark. At what point on a liqz4 51fa2aeuhiar-tg h hb/+y: me.l *ne joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0anf4s* 53l0 cs1l yijt and x = 0.20 m. What is the magnitude of the electric field at the point midway3li0 ny5 tclsa1f*4 js between them?

  Three 3.0 mC charges are at the three corners of a square of sil ,g6*x t-wwncde 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at th *g6 n,ltw-xcwe center of the square.

  Consider a square which is 1.0 m on a side. Cha1k msly ipwg98:7oj +jrges are placed 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). What is the magnitude of tgomw8 lpj jski+:17y 9he electric field at the square's center?

  A force of 10 N acts on 8yxga*k y,s(/dj b blqt4 a08ca charge of 5.0 mC when it is placed in a uniform electric field. What is the magnit /k*ybjst4ylabcgqad08 x,8( ude of this electric field?

  A particle with a charge286mdw8*mhci d8 ciqx 5r;wam of 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 0.120 g is plm2bn2 m+/xk fkwboe)c)(o:p daced in an electric field of 6000 N/C pointing downward. What charge must be placed o nkb)dpf o:)+wxo2 mkmb2/e(cn the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -(:rj6xdh )a u3jh/ic u2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of graah( uh6i)3rdxjuj: / cvity. 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 magi*hv1 e)yzxpb28cx-mim v /2xnitude of the electric field 5.0 cm from the sphere's m-)pvv2x 8y bci1zxm /*ih2xesurface?

  A metal sphere of radiui pws,xu1v(t+ s 2.0 cm carries a charge of 3.0 mC. What is the electric fi+vsi(, txup w1eld 6.0 cm from the center of the sphere?