State the law of conservation of electric charge.* adw*mobgpty sd 7+b)*zjnxy;* q8 :v

  Is it possible for two negative charges xp8t (v2xiq0*wt9woy to attract each other?

  Is it possible for a positive and a negatii(3ose6oct 0)gnzw:ive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the cst+m ept3uk p799 xt-:t7fzme d v0)yprocess the glass rod acquires a posim) zeetv3ycptpft u9-0:x7dskt m79+tive charge and the silk

  A proton carries a

  The model of the atom sho a4m)bgkw .vliw3f/:wws a

  A neutral atom always h3cx,azg(1 q3dwo/ r ix5li l0yq 6j7vaas

  An atom has more electrjz.l d b(g0l5g kuyts1k)4i,m kit t-/ons than protons. The atom is

  Materials in which the electrons are bound very tixq y2 s.s:ac9bghtly to the nuclei are referrex2.a sq9 sby:cd to as

  Materials in which the eleed9+ sth uw;y 9v:vc+mctrons are bound very loosely to the nuclei and can move about freely wi+ vwm9tyhv;c9+d ues:thin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal batk c7fhg ep5.:fn: ah(r. The end of the metal bar farthesagn:fhk5fpt.c7(: e ht from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is njz;vb.f9b 7hxhgb7( oeutral. They are placed near each othervhbb;.x bj7z97o(gh f on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargeb(/chfv:zadsg.g 9/ nxah+8 t an electroscope positively?

  An originally neutral electroscope is briefly bb,.*bi osaaf k, e* hc6mrr(3touched with a positively charged glass rod. The electr*,ba 6ma bbres(, f*3ck oi.hroscope

  An originally neutral electroscope is groundmkc+ o9*h 6 qw(byf4b 37jkkkled briefly while a positively charged glass rod is held near it. After the 3kmkyj wfk lo*h4(6 9kcb+7bqglass rod is removed, the electroscope

  A positive object touches a neutral electroe + tl sf:6cr(l*m.h sojh0g5nscope, and the leaves separate. Then a negative obo j+h05*r.cgt:e mslfh(6 sln ject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively char7 9mb3 prljk1kged 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 first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. Whb 3m9k7 jplk1rat is the final charge on each ball?

  Charge is

  What are the units of 7gl-w l32qfyunqn-4s the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge 4jf c:l0d . okvha4gd+is larger in magnitude than the secf0c4vdagl +o4k:j h d.ond charge.

  Sphere A carries a net charge and sphere B 31a*8 de0p4dbf 4nerciak y :zis neutral. They are placed near each other on an insulated table. Whc0*bi n 8dra1z 4ea:fd e4ykp3ich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Ifb w1td1zkqx4 9d c5c/t the charges on both objects are doubled with no change in separation, the 1d/4czdqbk9c1 t5t wxforce between them

  Two charges are separated by a distance d and exert mutual attra 1yiv6xim(wczry) ul5 8+nsilyn)zh1 eb ,l+;ctive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mn1i15+zix(8cvrb)m+ue, yz yywi lh6l nsl;) utual forces?

  Two charged objects attract each other with a forcy2h5dw 9d e8+bt oz,yue 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 reducedo d8+yez 9u2wy5,bth d to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a diskm.thgeuwb *+f+(7 h5oj j/si tance of 1.0 m. What happens to the magnitude of the force on the proton .j+h*s7btfmwe +k /(5iuh go jif a second electron is placed next to the first electron?

  An electron and a proton are separated by a distafw c,zy,,ja2 3 lv4yxmnce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next tyz4j2a fmvcyxl ,3, w,o the proton?

  An electron and a proton are separated by a dista.ut s v(oe:562hdquj o+xk4cjk b9o l9nce of 1.0 m. What happens to the size of the force on the proton if the electron t.o+(j kuvues:lbj99 45dhcko2ox 6 qis moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whs)mfrrxh*bft4i*l:g3m: t +u en 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, identical charges of -Q are placed at the other three corners of the square. Whr:rs fg*bx*utmifm + lh)4 t:3at 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 k71(,wt9fo y ztq r/+jxzi3+ ferzgiu0(wiv7 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 the magnitude of the force that acts on the center charge due to a third charge of +Q ptigq3 uzy7(w/e 0kr,9zfjwtvx17i+i(+zo f rlaced at one of the other vertices?

  Which of the following is not a vector/l-r fs .dwrzun/ gu/2?

  At twice the distance from a point charge, the rh5fu5 f9hw;istrength of the electric field

  Is it possible to have a zero elw/8/ h ,; mf cpftoy)04uhfqmlectric field value between a negative and positive charge along t/p / yfm8) fo wu;l4qhh0fcmt,he line joining the two charges?

  Is it possible to have cb:oh- by/;cawxg2e3 a zero electric field value between two positive charges along the line joining the tw-c xa;gcb:e/hob 3w y2o charges?

  Electric field lines near psitive,o6jgrbs,,zpu. +xbp; slqf0 point charges

  The electric field show m pr.*e5kmg*s1jr .:qod acju05j( 7gule-c nn

  Can electric field li t;uqt20mbmv)nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforx8tcc b h 0kdkn-e-.y4m electric field. Give a statement concerning the electric.hb xd4c8-0-kkc nety field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamea.e(0;neqyoa : ho2r lters are each given the same chyhl2o :(eran ;aeqo.0arge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rl)o(dpu 64pcwj8z 8o iests on a wooden table in a region where a uniform electric field iowipc486ojzl) du( p8s directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaoy 7dq:sv 5+82cu ujhbf778vv kqdv e-rge

  A positive point charge is enclosee 2twom jald, i4x7xb8 b,zv;oe: 9f9hd in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holloi4 2j oe8a7l9om;vxbdh 9ef: xtbw,,zw sphere has

State three properties of conductors in static equili738in jatl)l rbrium.

State Gauss's law.

  The charge carried by one elect(vrpu a2kj2 g/ron 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 +2.0af:xwvxgop/ , -hwo7 *imc .--s pakz,0 mC. How many more protons than electp-.a*xa s w/x7c-gzop:-,w mkfoiv, hrons does this piece of plastic have?

  What is the charge on 1fyk :,+4pr 7;nknic-hewy9cw kg of protons?

  An atomic nucleus ha3-hli5/r xv henw+ i1*xb.ufes 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 charge values of 2.07d,- v.yaivtp,1oik443tuja y dto. x and -4.0 mC, respectively. What is the magnitude of the electric force ,utdy, ja dk4v itot.aiv.p73o41- yxbetween them?

  A 1.0-C charge is 15 m from a secoe j nz2k/,4kv s6i3htund charge, and the force between them is 1.0 N. What is the magnitude of the secjui6/stvzenkh k324, ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fgwz c:p2r :sfxnr 2weu3k;.( ain1,vhar apart are they?

  The force between a l;*lh a uod:ik9i3-gy$30 \; mC$ 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 fo3tq yf er-1 ;158emcda*gdzgcrce. If they are moved tet;q8gd m 3e*gcdfz1-5 y1caro a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2. u nug/4w flk)+qj7zs30 mC are placed on the x-axis. The first charge is at the origin, the second to the rig4qk n)fl zgs3juw+7/u ht 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 charg9q4ki2:g sl+h qxvxe,bw0f7me 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 and direction of the electrostatic force which acts oi+9e :04l fh,vg x72xwkbqqsm n the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC ap1ll4br:*r. v 9mm*r(ww qx jvt x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3w*p(b lv*r4 9.vqrx m wl1j:mr = -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, and a secri );vb +iyc;zond 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 placed at the lower-left cornec;b)ir;iy v+z r?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.g if ojtp,941xpay*o/ 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the miotf1j 9x/opy*ap 4,g agnitude 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 (0r6 *ttv:jy l(4uzoth:, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force4tuyhtzo l6rv: :*tj( on the 5.0 nC charge?

  Three identical charges njegu*u k1j*3 of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onuek*3n1 jg*uje of the charges?

  Consider point charges of +Q atip9 *0qc gbjfa2ev+1 nd +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 -* cbp j qe+agt1v290ifQ 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 chargqg *by3/oh./ +ce *u t8ndz il2fs*coue is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeroq *38toh*s.zb o2uly n*dg fui+ cc/e/?

  Charge +2q is placed at the origin and charge -q isfofk f c:wdyhc),p(nuc y*+ 2g0gj 4*e placed at x = 2a. Where can a third positive charge +q be placed so that ofc+:)h wk*4*pf0gy,jg( y 2c nefducthe force on it is zero?

  A copper penny has a mass /d/0qh(cro0f 6rrl(g3d prgxof 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 against the force of gravity by the attraction of a fixed -06rbv:6iexrizm ed1 j/ aff7 proton some distance above it. How far above the electron is the vijx0 bfm1e6:a zif-/r7 6derproton?

  Two 0.20-g metal spheres are hung from a commo),sw jq6x)ln sh.7 pbgn point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tqwlbp)hj6)x.7sn ,gshe 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 magnitu31twpp 9w e*v b,2vb0ma)ajwi)ws 9inde of the electric field at a distance of 1.0 m frjb2ws,*wbvep)w0)pwn i3at vm91ia9 om the nucleus?

  What are the magnitude and direction of the 99fyzta.c1gex j a5 vw9axz/ (electric field at a distance of 1.50 m from a 50.0-nC charge?yvjg(e 5a1 /z9 a.9xawxc9ztf

  A 5.0-C charge is 10 m from a small test charge. What ig9m4gjvcj b +m*dy3aqk) q n11s the magnitude of the electric field at the location of th9b dm c3kgjgqaq41*mn 1) +vyje test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of txid-dgqeed/xi*m )8 f e:e87lhe electric field *e m7 f8xiddl:)de/iqg 8xe-e?

  A 5.0-C charge is 10 m from a small qz-6 xqnzq( +kq5ttu*test charge. What is the magnitude of the forzqnuqtktq+* -q 5 (6zxce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each ha6l) csf,ohjvivk) p/ ja tx-:2ve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electrics lkathj)ov6)-j xc/2: v,fp i field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m,xs1astn /j8 zC charge is placed at the 50 cm mark. What is the electric field at the 30xza s 1j/,tn8s cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chajbt,crt86 im1q* pz+m rge is placed at the 50 cm mark. At what point on a line joining the two charges is the m1p m 8zj ,r+*icttq6belectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and pi-xa*jk9 :czuwe (6wx = 0.20 m. What is the magnitude of the electric field at the point midwayczeaw6 i*9k:x jw(up- between them?

  Three 3.0 mC charges are at the three cornu2 y:niadro+ 71fq*ns;l b0u pers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Finasn* 10ydui2u np+oql7r ;bf:d the electric field at the center of the square.

  Consider a square whichu 48hj7wgir)h;y: u jssm1q7h is 1.0 m on a side. Charges are placed at the corners of the square as follows: 17:u)u;jmjr sg4wqih 7sh8h y +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 cu dq./*y-9cey ophw 6jharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this eleq. 69yoeuy/ w*p-jdhc ctric field?

  A particle with a chargexteipyw .f8sg6 myngh5 *l21 4qnm -+n 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 placed in an elepba up aj1dm oyx3ts-mh*7n.08;z2x octric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendep mo.o0ha-n8y1 m 3 bj;zxpx*2tdus7ad?

  A foam ball of mass 0.150 g carrik0; qa8dcv .nwes 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 magnitude and direction ofnwc. vq 8;kda0 the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whj+0cuth xc9 g.qtlir4coe lt: 15w/m( at is the magnitude of the electric field 5.0 cm from thtc5 g0 1(lrcmit94 /.uxe+h lwt :jqcoe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ele ;nl +xd9bgvyp.k46fx*,hxsya/s dl2ctric field 6.0 cm from the center of the sphp.xy+ 6 /sx9hll f gsx2, nykdbd*4;avere?