State the law of conservatiuik,keac riatz7**r 0)(9imaon of electric charge.

  Is it possible for two negative charges s.px4gov43w g 6g cwf(e ;sey-to attract each other?

  Is it possible for a positive and a negative cha bt6kj722) k dvqt7;tausb(mrrge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glalef n rhwu 8k62df /-. zjuwjnq-m+/1sss rod acquires a positiv8-k+16j/f/rmz s-2e wlu fujnw qn.dh e charge and the silk

  A proton carries a

  The model of the atom w(k r3yohgb8 rjv;ysrf (*11-ganh,gshows a

  A neutral atom always47,1i e1qmz x tt7xboy ch,i,xlicu(- has

  An atom has more electrons than protonsebq*3pg : 0ak;r3y +m twonk4s. The atom is

  Materials in which the electrons arxpf ln bv.y6;u h 1:dduo3kc3(e bound very tightly to the nuclei are referred to asoc1uk3n6h;3uy dpfx (.bdl: v

  Materials in which the electrons are bound very loosely to the nuclei and can mo* .sv4xt7a q*sszenc+ve about freely within the material are referred to 7e vax sqt4nzsc.*s* +as

  A negatively charged rod is brought near one end of an uncharged / ;9(3 xyhjczbesj 9wimetal bar. The end hjsc(9j;y 9w 3bzi e/xof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutraltq6chf /8t4y,nu(mvjks0 cl0. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gr0/ tm0vj6l c8 snk(y u,chqf4tounded. Which statement is correct?

  How can a negatively chlfnj+s5h/f /hl 6lmi 3arged rod charge an electroscope positively?

  An originally neutral electrosc zznq5ad l4-3bope is briefly touched with a positively charged glass rod. The electrozd-b4a3qnlz 5scope

  An originally neutra1k/fg xih5 e ;-9vvhttl electroscope is grounded briefly while a positively charged glass rod isf th-k9;te hx/gvv15i held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,ly :( i*,e7cokndgmq;yuv(8m and the leaves separate. Then a negati, 7v( (l n: yg8ouckqeiyd*mm;ve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrf 1e r9tqh zih6uqr g,x/-0;myal metallic ball rolls straight toward ryuqfh1/r0tz g6xi, q 9;emh-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 - -4 d+f.s jfvu7titj3rxsz5m*yr 7gzCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg ct. 8fq(3)ca k,tjquie is larger in c.q,)tfk qcij(ua3 8tmagnitude than the second charge.

  Sphere A carries a net charge and *:n btgsmcn+6nh):tq sphere B is neutral. They are placed near each other on an insulated table. Which statemn :g:t bh)6*mnstnc+ qent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fovd3 6*5nrall po;xw7m rce. If the charges on both objects are doubled with no change in separation, the force between t l lnom;d75 p*av6wx3rhem

  Two charges are separated by a distance d and exert mutualli .vcxo3o2c,wvv1il )pa* 7b attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force xo c1p*2.bw i73v,oail)cvl vs?

  Two charged objects rpz9 /p6- 2y+cgu eoe)p:tlk xattract each other with a force F. What happens to the force between them if one charge is dz :letgp y/+k6)92xp-rc ep ououbled, the other charge is tripled, and the separation 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 distance of 1.0 m. What happ)cg)m0eszm;p -abjc ( ens to the magjs))0( ;abcmz-c pegmnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are;u3gh uckd1oy (9y)os separated by a distance of 1.0 m. What happens to the magnitude of the force on the first el3 cuyhu s)( 9d1;goyokectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distana4yr fq;r,e8gce of 1.0 m. What happens to the size of the force on the protonr fq4y ag8;re, if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plauu mom+yms(19kg.yz+ ced at the center of a square. When a second point charge of -Q is placed at one of the square's corner.mo (usg1+yukm+ my 9zs, 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 isjirfuc+uzn7i6it/q ,.7u( (a 5gr 45f ldcohi placed 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 t+ ifd/thf uz ir(quj,i(a 6g7lrc7554u.nioche 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 followingyjbw2afx j/ ;8 is not a vector?

  At twice the distance from a point charge, the strengthzdg+b+v czs2cbp )yrdoh- /r2,icq24 of the electric field

  Is it possible to have a zero electric field value bezdxxh :3y ()qr i/v;zntween a negative and positive charge along the line joiiz: nv/dxhz y )3(xq;rning the two charges?

  Is it possible to have a zero electric field value between; yhsx) z5dqowo93 qk7 two positive charges al;)hkso5w3yx79q odz qong the line joining the two charges?

  Electric field lines near psitive point baph dki3 /7-a(xuxfz*r -d+scharges

  The electric field showv6 q2dx;pzq6 bn

  Can electric field lines intersect inso0-zv0m .v,c 9ghk19,4 tf rgfaujge free space?

  A solid block of metal in electrostatic eq4- dm5cos9ncdtx6h ,iuilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's in4o d-6hcnc t, 5ims9dxterior.

  If a solid metal sphere and-x s)hy2a, dk3jnkjd9 a hollow metal sphere of equal diameters are each given the same charge, n k)ddk,j9ax2h3 s-jy the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uhlf3x tw*z642kiyui+tq x: f1niform electri 6h1tt3xuqfl +y*ixkif4: zw2 c field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilirl dsv+2 15z)(psh4z)vi/ qaek/b ccabrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spher)-zk9ezg (lir.k7 m lfe that is grounded. As compared to the case without the hollow sphere, the electric field at a point direz79-eik(fm r)l k l.zgctly above the hollow sphere has

State three properties ofner zb(eu)f fzp-p, g h7,cd-0 conductors in static equilibrium.

State Gauss's law.

  The charge carried bu xp mo sna9)to8201ddy one 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 +2.00s6ri-q:v hy;98 d mfmf mC. How many more protons than electron rm9dm;8ifhvf6sq:y -s does this piece of plastic have?

  What is the charge on 1 kg of p*gqu9 ..d32ljh vcrfg rotons?

  An atomic nucleus has a charg8iw qa*z( 0n(o 8uoysbjp6j r6e 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,aza + ste6ai1, respectively. What is the magnitude of the,1+ei6aa szat electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ff78c)phbzyq+5r k cr/me0 (sxorce between them is 1.0 N. What is tce/0qr8c+5sz7 m)r hxpkbf (y he magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arc+rvl uimwedc;k *7,43f du 5ie they?

  The force between a 3qmlu0*r jnu1k 2-uhvz4lgfo / ibb* 4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, q0ef7 ;ldh w;qexperience a 1.0-N force. If they are moved to a new separation of 8.0 cleq0 w 7;qhd;fm, what is the electric force between them?

  Three identical point charges ol5w b02 gkw7ayf 2.0 mC are placed on the x-axis. The first charge is at the origin, the kbyw 0gla7 2w5second 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge ohi+zy) (yfy7uj* g3cwxtwn2 xw5e : jvl/yu,3 f +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 +t g72/ uwvj uwyxy,w3z(*n5f j)y3lehyc:xithe electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followi yf(/f1z opx+ah(h3:dy )apxdng positions: Q1 = 2.00 mC at x = 1.00 m; dp(/xzf dy3xh fp(+:yo a1) ahQ2 = 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 charge?

  A point charge of +Q is placed at the center of a squzwjv7/k ,h dco6tx -j6are, 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 acts on the positive charge at the center. What is the magnitude of the force that acts on z6j/hwj,7ok-vxdt6 cthe 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 = -1.0hxcvda5b94 g) u jri2 s1:(rbm nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magn r b4g :(xc)i ub1hv92j5masdritude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nh;3y p :g2q. pdc)qffo uqh 22zdm4nul24rg5bC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is q.fr45qculbfhd z2q 3 h4g m ;upny2pd)2o:2g the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vu f/.fwsa:p8/ ..ck ikloi0eb ertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one ofowe c0l.u .pff.iai//bk :s8k the charges?

  Consider point charges of +Q and +4Q, whizxcy3k-2z e(rch are separated by 3.0 m. At what point, on a line between cr (xyz3-2ezk 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)wr te u8 ,.z r2mw92clybz1yd.0-C charge is at x = 4.0 m. Where on the x-axis 2 r21ceyry9w ,mudzw8t)zb .lcan a third charge be placed so the net force on it is zero?

  Charge +2q is placed asx95)/u5sgc mrudeey rkn+06ha-; srbpq)+mt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerokr yg0 e cb n;umpus5+rqh6a-x)r9/ e)mds5+ s?

  A copper penny has a mass of 3.0 1yltziax 3+;)n pg;hd 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 attr5of;dgy t3bto s14(kdaction of a fixed proton some distance above it. How far above the electron is td1 4fb3o5gtoyt (dks ;he proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductx u d-3ws3l ccu+v6iec2 4:mqving threads which are 30 cm long. Both are given identical charges, and the elec+2q6iw:cmesvd-c4x 3l 3uvcu trostatic 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 cn8.x/g , efb/0wj kp*rh ayw 3:ntni+xharge of +40e. What is the magnitude of the electric field at a distance of 1.0 m ft nhkwwr,p/i/8 :gfxb x+3.j0n*aye nrom the nucleus?

  What are the magnitude an 5awl, l)yfa2yd direction of the electric field at a distance of 1.50 m fr5lw y,a )a2flyom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of (;bfrr r8qq r;b(de+hthe electric field at the location of th ;;erfqb rh+ (r8rq(dbe test charge?

  A 5.0-C charge is 10 m from a small test chargu33m.oo ft 8hh kdh.9ke. What is the direction of the electri. ht3h3 u98kd mohofk.c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t u rsf2.gj tslt)g.+h9he force experh fs .+rg.)lgjts29utienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each h 1kwe1 cgd9l7c1bqb5o ave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fieldcb11517glqbc9doek w 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 mC charix 04o +er0j,ixmw7hyge is placed at the 50 cm mark. What is the electric field at the 30 cm m+jh,e7 miwxi0r4x oy0ark?

  A 5.0-mC charge is pplad,z-6a h x3q;bc6v y +:wooin8e c7laced at the 0 cm mark of a meter stick and a -4.0 mC charge is 6 q-,3y8 n6c7x:bav;zelc p+doihw ao placed at 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 :(h * wt7cjwsdx = 0 and x = 0.20 m. What is the magnitude of the electric field at the poi7 :th(sw cdjw*nt midway between them?

  Three 3.0 mC charges are at the three corners of a square ofo:qa+zv e +lo0 rok+/s side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleck q+v0la + ooes+zo/r:tric field at the center of the square.

  Consider a square which is 158((*j tuw tt)hta+emn 6baqg.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC (+6nb aa*utetmg jq)w5h(tt8 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 it is placed in a uniform elecv i +kg7*6m,wxlkrcl.tm 9f6(d as wj7tric field. What is the magnitudej x6 7v+.k(tr7,w f 6i9aglmdcwks*ml of this electric field?

  A particle with a chargezk* , (hzzms5r3(rc dtu1tkj* 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 electric fiec t,np dnj2ukw26 trs :).c.bp3 kzy:ald of 6000 N/C pointing downward. What charge must be placed on the ball for it to be s.w6pur ) d23:cj znn.bs pt2tyc:ak,k uspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.(tl fqczmyp/,,5 ,xmz The ball is placed inside a uniform electric fie /,xtmml,(, zpz5fcqyld, 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 lo0(wipss/ +8fl)hd cthe magnitude of the electric field 5.0 cm from the sphere's surface ss c(idoh/lwp f)0+8l?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the0wm7 ha/a-:zja 7ls0ew zu5m u electri7 j wmza5 ea-/ws:0uzma7lu0hc field 6.0 cm from the center of the sphere?