State the law of conservation of electric cha o+h4 kx 7o990v+nn*utwuxsgarge.

  Is it possible for two negative ch0e o13zbdp821 o)32ynojzqmnc bg ac5 arges to attract each other?

  Is it possible for a positive and a negatidgfuz m90rp .jtr9 3rxdu1m -2na8ex2ve charge to attract each other?

  A glass rod is rubbed with a piece of silk. Du 4 ,yv7gi9gllu 7y r)p-,sgiccring the process the glass rod acquires a posit7u) iyg lvg r 7cc9yi4sgp,,l-ive charge and the silk

  A proton carries a

  The model of the atom u vne6umxc+1sm + )pg3shows a

  A neutral atom always has 8ppu9llu: t7c

  An atom has more electronsf 2me++oif8v. jwyqhrr .v /h* than protons. The atom is

  Materials in which the electrons are bound very tightly to the njl :ha1;9 l ix20l8gguynkuc+uclei are referred:u1 2 yu8hn+0 ;lixcl9kgjl ga to as

  Materials in which the electrons are bound very loosely to the nuclei and can +9wtff )oj o:emove about freely withint)9fjew+ :f oo the material are referred to as

  A negatively charged rod is brought near one end m,6e2v r uvvu;of an uncharged metal bar. The end of the metal bar farthest from t ,vvu rm2v;e6uhe charged rod will be charged

  Sphere A carries a net .f6uvdoiu)4gpositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct )uuio g4.fd6v?

  How can a negatively charged rod charge an electritb80aecr9 j.j fw.* bal5y f1oscope positively?

  An originally neutral electrosfr ki3+ gzgu2(h*b8hkcope is briefly touched with a positively charged glass rod. The electroscoph i zg8k3+k fg*br(2uhe

  An originally neutral electroscope is g8:p puwrk k6 eng/4:cprounded briefly while a positively charged glpep 4u6/:g nk8pkc r:wass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral ele vdj/;v9y sfmu7lsr70ctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not to79/syjdr7; fvm v0lusuch it. What happens to the leaves?

  A large negatively char sn/ mb62 d+/02sblrqpr5g pogged object 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 firs r2nlod2gsp+r p gmb05 //6sbqt 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 Coul9afd;vi* y xx vzqw*d 2xgv;g5h-gx- p9k:x8r omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by g0 af3 ui :r*4vunb 3pl4u(tj 67patkya distance d. The first charge is larger in magnitude than the second cha4b(f 73vatpy lia63 j: 0tkp*n4uuugrrge.

  Sphere A carries a net charge k mhbtkj0u:1ti h/ uy.e7 86vnand sphere B is neutral. They are placed near each othv.nu8 h k/k e0mh:bytji16t7uer on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each j,,sunmlz* wi78hm +wv ry-i*other with a certain force. If the charges on both obj *vlrsmw7w- +mu8nz*iyi,hj, ects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exeww )rar 25)m(9i k+omkwzxm)qrt mutual attractive forces of F on each other. If the charges are separated bywmwz9()r 5rkxkm mq)w2+)oia a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happent xd wl/tq0+ j0aw+:aj :vyg:wm6r*r zs 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 foarg*: r+j0v jttd6ql+w/xw 0: : wmzyarce is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens t95 9 qgfn1i+x1dev*1 ffxoyrjo the magnitude of the force on the proton if a second electron is placed next to the x nf x1+qi 5eg9d1*f9yvjofr1first electron?

  An electron and a proton are separated by a dif kn tc+74qs2i)ok9d sstance of 1.0 m. What happens to the magnitude of the force on the first electron if a ts2fc+9oi q )kns47dksecond electron is placed next to the proton?

  An electron and a proton are secjo(gp)9l*9.ha heg n parated by a distance of 1.0 m. What happens to the size of thj henh)(*lpgca 9.g9oe 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 squ:9kusbye(g u: k+w. iaare. When a second point charge of -Q is placed at +(.k wbiy9kse: a :guuone 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 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 trianm-s1s g pg+8qtgle. 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 act s-mgs8tp+qg1 s 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 l-o7*gnq n .iuvector?

  At twice the distance from a point charge, the 1x q8 2w, ucr7tk,gcdkj( j4flstrength of the electric field

  Is it possible to have a zero electric field value between a negative and positt2qgrso16, e,hnq g; vive charge along the line joining the two charges?ohsrg q tn1g; eqv62,,

  Is it possible to have a zero electric fieldnk4nef)o*0-zb ,(pp9e c e lrjsir4;; tpce 9m value between two positive charges along the line joining th)k *;rpzcs rpe9nce( 4p9 tinl;e0 -o jemb4f,e two charges?

  Electric field lines near psitive point chargeszkt t09k gj,yq*79wcb

  The electric field sho52vkpam2 10nf4i1c s+ad3ggo lq2a kown

  Can electric field lines intersect in free ):b onhhluu:1x jcl9/space?

  A solid block of metal in electrostatic equilibrium is pl/ *tg u yv*nmj/kb,mi:aced in a uniform electric field. Give a g/mmnkt v ,:jb* i*y/ustatement concerning the electric field in the block's interior.

  If a solid metal sphere and a holloe9x)u-ifes0cpu c9r 0bnv f(.w metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and th fecri0unbv.c) -e0s f(u p99xe surface is

  A cubic block of aluminum rests on a woodey:goo*vq t4k( n table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfaco( :gk oq*y4tve?

  If a conductor is in electrostatic equpx2)tvhl ;mim66w u6cilibrium near an electric charge

  A positive point chargynzi 8gli.or,t xm 4pif.629fe is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the h8.9on6f itglyi2 ix4, .fpmzrollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of co4mj; usgq/7v1swn wugt(+ o /vnductors in static equilibrium.

State Gauss's law.

  The charge carried by d(.u2el9m:5fih ah spoj)np 5one 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 +hu4uhg* d+hv7j2fszd6 9 n0 xjb*eurof +2.00 mC. How many more protons than electrons does this piece of plastic haveu72hzhdsux ++ *4 vfb6*90ujer jdhng?

  What is the charge on .azpqf0 s qo)n 3(eyd;1 kg of protons?

  An atomic nucleus haso3*-i5br nqhts7euv w+1qe 2f 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, have ch+duv r(jl6,j1uh qw8 a dj8vc,arge values of 2.0 and -4.0 mC, respectively. What is the mav(aj6r +hj8ddwl,u,c v8j uq1 gnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is xc /jpkpq m/f(j6 c*:t1.0 N. What is pc*/xpmkcj (6f/tqj: the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fafz5vmh3b)(o/vih md31h*/ p 0ceweoi r apart are they?

  The force between a p y i-n:6ufe d(jq;su,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyb.f bvw( cbj13 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separbwbcj.v1(fb 3 ation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsqjy85 z hs//6r) a7x2iwksmti t 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 whw/q5/6shkriaixj7z) ms2t 8 yich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed zg66ylh+vp(kb. e um3jstc2 1 at the origin, -2.0 m C6 63gtb(l ekc1us jz.y+h2vpm 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 force which acts on the charge at the origin?

  Three point charges are located at the followrl 5,r1dzd o5ding 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 tlr 5r15ddo ,dzhe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poindje )3xm6pb+ wd4y*wkt 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 placed at the loweredxjwy)d 4+w pmb36*k-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = qwnb ub-p/0*o -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0pq0 -wb/n* ubo, 0). What is the magnitude of the net force 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.(-r9:j/kk e;snmkzjm15v rdt0 nC is at (0, 0). What is the direction of the net force on9j n rk5v-skzdmt /1k mjr;:(e the 5.0 nC charge?

  Three identical chargeshu8,gy 1vf- rx of 3.0 mC are placed at the vertices of an equilateral t,f1 gxvh8y- urriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Qasa10rktrn*) 8poz. s6m8yhq 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 forczsan.*m r q8186tok)ahyrps0 e acting on it would be zero?

  A +3.0-C charge is at th5hvbfj y5,c1 gdtq07 me origin and a +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 on it is 0m1 v5dhg5fybqt,cj7zero?

  Charge +2q is placed at the origin and charge -q lejib,))4 *1stbkbawfk -.ah is placed at x = 2a. Where can a third posil-aebba *bkf ),)i.s hwkt4j1tive charge +q be placed so that the force on it is zero?

  A copper penny has a 98- : p 8,tuklacmnazemass 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 againstgb. qbq2ilfhul7 ,(*w)bwl*h the force of gravity by the attraction of a fixed proq,* qwl. l7lhb u 2f*w(ihb)bgton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point + rcfzf*.ajy.,ha8 ejg mgt:7by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces the8j.mhz gg c.t:* jfr7,+yfeaam apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charg1d8.f(bvm ,m 2/jv+r/2j lzzwj twgr ge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?/vjb.,j v(d8gw m +r1wf zjgzm/t22rl

  What are the magnitude and direction of the electric field at a distancj 2 pytn0+ *0jzaduv7x ucfw6,e of 1.50 m from a 50.0-nf 2 ,tadw+v*0nuu xcp67 yzj0jC charge?

  A 5.0-C charge is 10 m from a small test j kn56y3u2rc ycharge. What is the magnitude of the electric field at the location of the test charr2ycnjy 6u3k 5ge?

  A 5.0-C charge is 10 m from a small test charge. W ; h 0yw(;hdo8t0m9fa ucbrc8what is the direction of the eleouywtcb ;f0dh;h98cmr8a0 w( ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude g6.v rr:95*wzkwm jq1boz j9 dof the force experienced by a 1.0 nC charge placed at the location odr*z96owbzgj1wkrj 5vqm . 9: f the test charge?

  Two point charges each haeqz8m+v+pvg4 k ert7 ,ve a value of 3.0 C and are separated by a distance of 4.0 m. What is eepv4tq7+g 8z r,+kvmthe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metvtw;.h 5l8b7 2 gwtcjxer stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm m 5cvgttb7x2 .lw;j w8hark?

  A 5.0-mC charge is placed at the 0 cm 6sbs taw73*q mt.tn;hd, v cu9mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jh bt;mdv93as,w *t q6tuc7 sn.oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed atd)4(ykvqhsn1 p7 sb 3mhts05 t x = 0 and x = 0.20 m. What is the magnitude of the electric field7dys h5) vs nmb1s4t3hq0(t pk at the point midway between them?

  Three 3.0 mC charges akr5*77sre blr:28 ff o8(3djlvxe xy sre at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mkj *2f5rs7 srf (8o:3x l7ly8dx rveebC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m o q4cg: 5xyvl,ix2wj0un a side. Charges 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 theg ixux05yq2:wjvc,l 4 magnitude of the electric field at the square's center?

  A force of 10 N acts o6qlbi2 qci d.2bbx1+on a charge of 5.0 mC when it is placed in a uniform electric field. What is 2ibx.d+q cli1ob6qb 2the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a k:sh(:a 6l38(,nubzhi lk ola 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 -b+d.vgop,*qw(vjrgsr)k3lwz1 cl2 placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it p kg3-,q(rlgozjb2s.) w* d1lcv vw+rto be suspended?

  A foam ball of mass 0.150 gt 3,eq)yg 0*ihhyi8c)lnpn r7 carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitu,yy80i cih h ))tnplq*er3ng7de and direction of the electric field?

  A metal sphere of radius 10 cm carries a d8jz5yx7:0yz qa)w4pscr * ug charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sp w0qx 7 d5rzyz:)4y gs*cau8jphere's surface?

  A metal sphere of radius 2 +* c9ttmq ;:l,jzizuv.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center ofqj+*zzmcti9u l,;v: t the sphere?