State the law of conservation of electr9 lpj1xm 9x6u;lkqz. g-ask +pic charge.

  Is it possible for two negative charges to attract el us65l8tb: a:g6owj f2ckjkv j+/t6rach other?

  Is it possible for a positive and a negative charge to attract each otherx wmc:p)j)cg :4s7o xj?

  A glass rod is rubbed with a miw*9.8b qgyrpiece of silk. During the process the glass rod acquires a positir*q8 byiw9 gm.ve charge and the silk

  A proton carries a

  The model of the atomfvn,): c f3i ketqe7:y shows a

  A neutral atom always h6+o r h 7ldb-ht57nezdas

  An atom has more electrons than protons. The atom 9dk/r o3.o sbuis

  Materials in which the electrons are bound very tightly to the nuclei are referrpx) tg0yo qw5aeth(/+ed to h+)pxtaw /t0(q5gy oeas

  Materials in which the electrons are bound very loosely to the nuclei and can moc0pdut 2c0pd jujoxksaz3:e7. z:lur1 1 ra,,ve about freely within the material are referred to asjoparc:,u 7crp0j s211,zkxe .lzut 3dud0a :

  A negatively charged rod is brought near one end of an uncharged m -3klfe)jnl s au1tw,i7yk6w8etal bar. The end of the metal bar farthest from the charged-fwi k8use6 na)j,7lylktw13 rod will be charged

  Sphere A carries a net positive charge, and s9r1d 3ng0bhj;le03qvajxr, 8 /yny qw phere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wihlq3 r;9drgjqavjb/n 0y80xwn3 , e y1re that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleyczz*;a e:k43 (t tl0najl7chepfj7 7ctroscope positively?

  An originally neutral electroscope is briefly touched with a positzwsl ik ;xp4 ;k/ap;6tively charged glassi; 4kzwlk;6spat;/ x p rod. The electroscope

  An originally neutral electroscope is groun yu0yga*pkyih 3+.x(j w p0o9fded briefly while a positively charged glassup 0wk3.0 f*yoy( g+hjpy9iax rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. .:s enyjad,7e Then a negative object is brought near the electroscope, but does not touch it. What hae7dys.:ne, jappens to the leaves?

  A large negatively charged object is p9o j0em-l5acq16r)vf3bu hfibe7:i zlaced on an insulated table. A neutral metallic ball rolls straight t icrvam)b9j o5lh61e -: 3qzf07 fbuieoward 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 Coudx:k:- 9(7gqj1 xlw.rs3kg htdc)kvhlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di y;eqly)0;xbitkh oxgy22 l,mnnz :4.stance d. The first charge is larger i0):h;ymtzkx 2lxgoq4 ny;.yile b2 n,n magnitude than the second charge.

  Sphere A carries a net charge and sho fmly4;ye nfg)8 4k9phere B is neutral. They are placed near each other on an insulated table. W; 498go)m f nlehy4kfyhich statement best describes the electrostatic force between them?

  Two charged objects attract each other wi /6xk g1a*jgw,ox8 aouloyd+.th a certain force. If the charges on both objects are doubled with no change in separatigo+ 8g6jaa1.d* ,lox yku/owx on, the force between them

  Two charges are separated by a distafaeg -f:((fdf 6/*ihbh wwq x*nce d and exert mutual attractive forces of F on each other. If the c q-*(fd b6g( x i:wwf/ffhea*hharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a kgkhiv;kx :0t97hmo4l313i7vxua ec force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwev7x3cmvktgh 93:1h k ai4k xu0le7oi; en 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 owc ydr ;i.k+9bb+vl,c f 1.0 m. What happens to the magnitude of the force on the proton if a secondc,l wr+dy9i. ;bvbc +k electron is placed next to the first electron?

  An electron and a proton are separq, d; , tvibl5e3vb/mxoqj5m+ated by a distance of 1.0 m. What happens to the magnitude of the foj,3/ev+ xibvqdom;qmb55 ,t lrce on the first electron if a second electron is placed next to the proton?

  An electron and a proto0x*eh; ctmi3f ndmx 3ki+o-* vn are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the+e*h 3-dtvi;nf03cx* mmkio x proton?

  A point charge of +Q is pla7 brobf)9,s cc;xe4:a8rllsptl o 8x5ced at 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 electrostass78pxobx;t8rlc o acleb5:f4,)l9 rtic 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 t*2bdh*pfg ,qhbmy *7b-q 4bj 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 *p2*,b*jhbbbhq7y dq-f t4m gthe 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 quhh ur j+:aamg6sw40jir) 65 is not a vector?

  At twice the distanca 39q :sbe1cu5hsr ui)e from a point charge, the strength of the electric field

  Is it possible to have a z5ra/s q15tz kk;nc01 t tr hga)v-7znxero electric field value between a negative and positive charge along the line joining the tv0rtc5sxkhnt-n / 15a ;zkzragq)t71wo charges?

  Is it possible to have a zero electric field value between two positive charge(33js yypnwr. q,c ,xas along the33ywy( pj ns,cr.qa, x line joining the two charges?

  Electric field lines near psitive point charge -3u0j 2g lke:fbo4btbs

  The electric field sqy*exzim, o*,q ;3uiajg.s;r ma5i+j 8w c7uehown

  Can electric field lines interw9nc .*wbb ac n:y;xg(sect in free space?

  A solid block of metal in electrodv+ie -z 5n1xdstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electrd1- i5 ndzv+exic field in the block's interior.

  If a solid metal sphere and a hollow p ; gg8jlybp3,i2 6lkrmetal sphere of equal diameters are each given the same charge, the electric field (E) midway between ,l 8ply;gb2rpigkj6 3the center and the surface is

  A cubic block of aluminum 6xitgm/uh7 e2rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning theim7uh6 /e2gt x charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chana2)wh6ay4p ,6 shtma:m5oc nrge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedey+ nm,8 p)uzadvsn*;. As cosd* ea ;+8,z)ympunnv mpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static ff9tya9mz+q -z5gbs*equilibrium.

State Gauss's law.

  The charge carried by one electron is ,n3 78tgwdw00feu jof,sq 8 pw$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mC. How many more pro9*jty:elf cx3e26dy ltons than electrons does thiyj:9l yle3xdec6 2t*fs piece of plastic have?

  What is the charge on 1 kg od415 oibjuv pv8nt( .p5v vsq/f protons?

  An atomic nucleus has )9adqum, z2i zxcv:/ ec av87da 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, havnz)n :dq f xfm;,r.n;be charge values of 2.0 and -4.0 mC, respectively. x)d;zmq,.nn ;nb:fr fWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,5 7u2pu;k k.ho t7m,9ta wbtgd j*8ywe6l an:a and the force between them is 1.0 N. What is the magnitude of the second charjg8lk2,a7ep7 6t.:5;tdm akbty wu9*an uwhoge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ap-ru p*; rtit0g inrc)h, p/,myart are they?

  The force between a 2ej tspc)5eqt*h) :izqqizqv .*8ug7$30 \; mC$ 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-pxixs;ww 04 cp0ew rd-j,i99jN force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?j pwr-9 xd 0e4i iw,;c0j9psxw

  Three identical point charges of 2.0o 9 pjwjy4-xs6 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, aw4-s9 y6jojxpnd 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 cha3rdscag,;3 4s;wr hltpx j6d(rge 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 forcpr jc;r wt,dx(sl3;dg6h3a4se which acts on the charge at the origin?

  Three point charges are located hy;/g hta2r3 dat the following positions: Q1 = 2.00 mC at x = 1.00 mt3hrah;y 2g/ d; 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 charge?

  A point charge of +Q is placed at the center of a square, andias(a, ;g0gp uq5 )xtb a second point charge of -Q is placed at the upper-left corner. It is observed that an a ,;(q) i0t5gusxbgpaelectrostatic 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC youjume rvwu- ijw 2xwm;g57;4o,+)t is at (0, 0). What is the magnitude of the net force ;-wm; +5j7,wy vu )xi 42gmtrejuwoouon 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 lz:2/tubuv. o 2 b,w lrk.b)vm= 5.0 nC is at (0, 0). What is the direction of the net force on the 52o2vuwm / ,:u. lzrb.tl bkb)v.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equi) gb9i0uaqg4r lateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thuggr a049)bq ie charges?

  Consider point charges of +Q and +4Q, )dg6kcslu,8 iwhich are separated by 3.0 m. At what point, on a line between the two86su )kcgidl, 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 22b7lifeggp5 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 ze e7g5 l2pfgbi2ro?

  Charge +2q is placed at the origin and charge -q is placed atc (y;nt,htoqfam ; 47q x = 2a. Where can a third posi hqqa(4n 7ftm,co; y;ttive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A3c iv(gb5u:xo4o sqf* 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 szavv/l9 9z8 eas/- eiof gravity by the attraction of a fixed proton some distance above it. How far aboves /lv eazz8/a9i- s9ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pov- /ql,fr m 2*hjme9ltint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads - h*2 qtl fj/evl9m,rmis $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudr ohe59 qqdluur,/5 3he of the electric field q39d ul roh5e5,h/qr uat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dis oxj2 8oet,rzu7 vnr1*tance of 1.50 m from a 50toz1u8 o r ve,2r*nxj7.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the6fmb, me2dr1 s electric field at themsd6e, m1f r2b location of the test charge?

  A 5.0-C charge is 10 m from a small tejful ub-6t*tb:kmonh 0 /cs7 9st charge. What is the direction of the ell nt06h*tcjo s7f: ubu/9m b-kectric field?

  A 5.0-C charge is 10 m from a small test charge. Wh 6m+wr xwhvy53j2o :unat is the magnitude of the forcojyw +xuw 3265r vh:mne experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by v;/o 7f2idlg ua distance of 4.0 m. What is the electric field at a point midway between the t g2f /dlo;ivu7wo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chaud,u 8,ebj x4c.,uf3uk*-i+hgxqer p rge is placed at the 50 cm mark. What is uc-.k,ur bge pixf4qu*u 3+h8 ,x,jde 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 mCshyihzwy9 z8oi;f)43e w1o.y charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zy) i h .of3 4ewsi;o1h89yzwyzero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 ao6udpg3p zvrj 8( qv,/nd x = 0.20 m. What is the magnitude of the electri rp/3gzo(qd,vup6 jv8c field at the point midway between them?

  Three 3.0 mC charges are at t s9 / tt.qbw;5, duyld;kn5(xxce e:cxhe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the usx ;c5yk;xne, c xtdqlw(de/: t.95belectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corneracf6dl + e/f,ss 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)sfe/c,ad f6+l . 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 uniform4x *r,,ggejxn electric f4 xx eg,gnr*,jield. What is the magnitude of this electric field?

  A particle with a chartgyey ke9/u/ mh1 :;ooge 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 el;xnfkih 8v 5/oectric field of 6000 N/C pointing downward. What charge must be placed on thehi/of8vnx;k5 ball for it to be suspended?

  A foam ball of mass 0.150 g carriesj epgn*4k).2; nkwibq a charge of -2.00 nC. The ball is placed ins;kj)knin42 pqwb e. g*ide a uniform electric field, 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. Wh ryh7*e2i lwg0sz0ee x73r9 inat is the magnitudg770seirli x e *29her0zn3 wye of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is3gbb l 8fiqp0l,,3ra f the electric field 6.0 cm from theba ,0lfqrbf, gp338li center of the sphere?