State the law of conservati*hyi)dt9a4h j zb6lw3kf 9r c1on of electric charge.

  Is it possible for two negative charges t/ fmkz hf6h0 bd-8v8zyo attract each other?

  Is it possible for a positive and a negative charge to attract each oth 3.. 2et9lq(bbeluueier?

  A glass rod is rubbed with a piece of silk. During the process the glass rod pw1)38 9 ljjm nvpeeik4t/t0sacquires a positive charge and thets9ve )0t1 e ijkjw pl3p8/mn4 silk

  A proton carries a

  The model of the atom showqbe c,5ivx5kdzk62- w s a

  A neutral atom alwayza(qiq-+c w; 4c2hug ws has

  An atom has more electrons than u sey,l2rb/ x;protons. The atom is

  Materials in which the electrons ai);sya 9y pg8s3x ohv2re bound very tightly to the nuclei are referred 8a s)9ohp gsxiv3y2y;to as

  Materials in which the electrons uo2x5io, d8i 1cxgug8are bound very loosely to the nuclei and can move about freely within the material are referred iggd8528i ,c1xoouu xto as

  A negatively charged rod is brought 9 /f bughnm72h4 ufecl+3lm.j0x2buxnear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wiuf2hlujl/ eb0 794u2xmg. bcnx+mf3hll be charged

  Sphere A carries a net positive charge, and s:8jqb90vkai t phere B is neutral. They are placed near each other on an tbj8iv9 0a:k qinsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro us 32f3kiwv:pd charge an electroscope positively?

  An originally neutral electroscope is b fb( bo(8n 7g6 -t(zmilvvapr9riefly touched with a positively charged glass rod. The elect9fr pnavi (((8o7g v6 bbz-mltroscope

  An originally neutral electroscope is grou/lg+bg: * e)z+pswy dunded briefly while a positively charged glass rsu* y pb gdg++w:/)lezod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and f6uj fbowfe2i4g) v7c) u2w1vy 8r9wrthe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the l8fub)w97fo u v2e4c6 wgw2rvi1ry )jfeaves?

  A large negatively charged object is placed * o9iip,z+4 f vuw9dvgon an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral*iifzu o,vwv p9gd94 + 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 Coulomb constant eo.o87 r6xqps;0 om7cscq fg +$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firscvi2fqg i3t4+sk6n6l+ bil t) t charge is larger in magnitude than 3+t4vnk llb6i +tf iq6)csgi2the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placev:1hp: az2fnebp7or) d near each other on an insulated table. Which statement best describes the electrostan vpra:o e:p1)hb72zf tic force between them?

  Two charged objects attract e)x vh n 05ne.cr6jmlbczfka8gol:;, , ach other with a certain force. If the charges on both objects are doubled with no change xcj)8m;,l6cbf r,e :zok50ganvnlh .in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcp;p n 5/s2la6 aw -b;jay1wpg;vczeh :es of F on each other. If the chargesz2lwa h6/ y1pap;b pc5a;v:;gs nje -w are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract rld9 ojsjvw(f2*jj zol 13 6twr:pi1 .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 separation distance betwo 9i(3j.st2 rpl*jz 1v6flr w1 djjo:ween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton /w* t hu etcc/s kt:g+;8gx8llare separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next u /t8:leg*wglh+ 8c ;xc /tsktto the first electron?

  An electron and a proton are sepab8,z,dk cy *ldfyz4 yg/3hnnvn7p.o+ rated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protondz yl,y73fh* ./k bn,ndzvcyo8p4g +n?

  An electron and a proton are separated by a di.. p*kr/. (fttwdp hbgstance of 1.0 m. What happens to the size of the force pt( b kh r/t...dfpw*gon 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 square. When a second p9),glx84g:*hdkus )bsiquwhu a5e2 ioint 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. What is the magnitu8bs)hxu2 h u:gqsu5wigk)di4 *le9a,de 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 equiluyvg oh 1y03a15.s nnq xg))tnateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electronn113qgya to)05.xh y)vgu nsstatic 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 placed at one of the other vertices?

  Which of the following is not a vect4gw3 x eqvr7x8a1)r 7.v)jvfumxj, qvor?

  At twice the distance from a poi.umth y se3e)6rcm9b6 (lz(jtnt charge, the strength of the electric field

  Is it possible to have y ve *+l3i.fgav;apgl7a32 hx a zero electric field value between a negative and positive charge along the line jgf*a aa x2li vh.pg7le 33;v+yoining the two charges?

  Is it possible to have a zer/rify2o (0im)2oyeg go electric field value between two positive charges along the line joining the two chareigg/y)fymo2o20 (ri ges?

  Electric field lines near psit+/ j1c kx neqqoms1oi0oye ,+ye6*n8o ive point charges

  The electric field shownq 4 vlfl08-3kvh/,he*r unjho

  Can electric field lines intj i/ xll8*ssu*uo(z8jbt2z.wv9zt nc v- y)w.ersect in free space?

  A solid block of metal in electroxb +g:cva1 vn*static equilibrium is placed in a uniform electric field. Give a stategxc1n* :b+v avment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere eo5t vii+zx,b y4w ;*uof equal diameters are each given the same charge, the electric field (E) midway bb*iv;ez5t, xoyw iu+4etween the center and the surface is

  A cubic block of aluminum rests on a woobviuoit * 4tcyacjp)lk12; dh4 75 bt-den 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 su*4lbt2d;b tutji-i7c v)5po4 acykh1 rface?

  If a conductor is in electrostatic equi4ox +pgf3mrzuk7 2y .g+dj(mzlibrium near an electric charge

  A positive point chargoh7n qhl r-9h8;xh xi-e is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the h;7hh9lo-iqxhh nr x-8ollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors zdle xzyyg9gsf55 0mr4m6/n/in static equilibrium.

State Gauss's law.

  The charge carried by tb) xu, g5 b7ydn6kmlmpa(q.l 9+w i nt0i*(izone 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 +2.00 mC. How many more proto+,.gp4mk0guby xh/dons than electrons do y.bdox+ 0g hk4pu/,gmes this piece of plastic have?

  What is the charge on 18(wc rql )rz g52s/jq ex1j;1tk (nysl kg of protons?

  An atomic nucleus has a chargprs3uv* fy q p.23xn1 lb7h wj7l6u/.5bxkfoje 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 vkc 0t m9qu0n3of 2.0 and -4.0 mC, respectively. What is the magnitude of m9qt0 uk0c3vnthe electric force between them?

  A 1.0-C charge is 15 m froz*w jwf8y-9bwdz9ap.0 qg hpf6,hw*j m a second charge, and the force between them is 1.0 N. What is the magnitude f6 w,jfwhh j-08*bzpg9*yq.a dz9pww of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ap fwn.uxppk ycx3 9i/liv:dv(y1t ;+* k a-tp4sart are they?

  The force between a +a osos,,dkn h:a u/7x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial : cz9a;hi )kqd)cgttfk ;w/(a 95dbbsly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elec )k g kdcaa:bb/;cwsi9qtd);t5hf9z ( tric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsicd, ke,8os:pb /gegv,d )h.et 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 whig e8s,e,)p k bie:h,o/gdvc.d ch acts on the charge at the origin?

  Three point charges are placed on th83w, xv wxt o392g0lx0noligce x-axis. A charge 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 on the c83oo0 v lg,2l9 3nxc0i xgwwxtharge at the origin?

  Three point charges are located at the fo:,sd:i -,ptg xq hsi7kllowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x7pshi kq,tidx :, -s:g = 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 sqx72jk,8swwtuy q/ci3gzry6j0rul (3uare, 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 yq rj3rs xwjuztg2w,/u7( 36l80ikc yacts 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.nzofa( 5); tm;pye q; 6utgw*z0 nC is at (0, 0). What is the magnitude of the nw;yfn5; *o6 g)qzaz(pmet t;uet 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 = 5.0 nC isbmv 6bh(c xs05ceax5z6 ,w:gc at (0 hb6,6abxsegvcc (55mwx0c: z, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the whv a89p 7jrt.vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the7vj 8rtp w9.ha charges?

  Consider point charges of +Q and +4Q, which are separated bho8s34xj8 l;d*si o lgy 3.0 m. At what pointojg;oi8x* dlh3lss4 8 , on a line between 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 +9.0-C charge is at x = 4.0 mo-kloxrey*rz88 j o :6. Where on the x-axis can a third charge be placed so the net force on it is zezyjko6xo*8o -8:erl rro?

  Charge +2q is placed at the origin and charge -q is pla qu*n fdtx, l7t:-da 6c)rra3iced at x = 2a. Where can a third positive charge +q be placed so thatl-xdrt* r)i ,utqn a3a7d6fc: the force on it is zero?

  A copper penny has a mass of 3.0 g. A t ospxw*+- mmx0otal 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 ofr22)c7gn2d/fet2nws r5f w jnz4lmew 16efd8 gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?lsm n85je 214er dgwf nc/zrw2nf76)t2dwe 2f

  Two 0.20-g metal spheres are h+ *y5p6h7hnm sbdct e-)i sc)uung from a common point 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 threads5cns+y ) mipeh7-sudt)b* 6 ch 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 elezb2 lw uocmd. epj./2il t7ih i6+s87actric field z7b .tep/i7aldo2+2wm .ics6j 8 iuh lat a distance of 1.0 m from the nucleus?

  What are the magnitude and direckg jxc n,1wb.s gelt2yh/j.0(tion of the electric field at a distance of 1.50 m from a 50.0-cj0gn ,h1kx. l(gy 2wse.j b/tnC charge?

  A 5.0-C charge is 10 m from a small te;ya/c2hh3 x gzst charge. What is the magnitude of the electric field at thec;h xy ga3z/h2 location of the test charge?

  A 5.0-C charge is 10 m from a small test chxl:fqyuy91 wmtx zc(-;f-c6yarge. What is the direction of the electric w9: -x6zycfm1 q(ty yul-cx;ffield?

  A 5.0-C charge is 10db d/oyt 5q84y m from a small test charge. What is the magnitude of the force experienced by a 1.0 dyy48b do qt5/nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatedl p0uy11hcy;sfo;m i39sj xof .aen.4 by a distance of 4.0 m. What is the electric f0sj9e1yucfyp ;. oomias ;xh1n43.l field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a me:k ) myqoqrg39ter stick and a -4.0 mC charge is placed at the 50 cm ma rygk9q3om) q:rk. What 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 andtuo gwsq9dmqv4inc*//iyg* /rw 9c03 a -4.0 mC charge is placed at the 50 cm mark. At what point o u4q r9s /tmgc/gn yiqvw*3o/0d wic9*n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and .5 jt2ytf sx;a-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the et5a;fy.2tx sjlectric field at the point midway between them?

  Three 3.0 mC charges+ )*es5d sciusxvninpnzy.2 ml44p ,4 are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mCndi)ie+ v u4zx*p5m p4cyss 4sn.,l2n charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on agel,4o 6ywdq)y +ib6 fz84qtb 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.b ydo+6)b4f,y e64lw 8zg qtiq0 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 08zrma3fjxynsubo):+m/ )e g placed in a uniform electric fiel3gbo+)80fanx mm/esr ) yzju: d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass fod3 gek f4/(6v+asn mof $5.0 \times 10^{-3} \; kg$. 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 field of 6000 N/C poineg+ e h-s8ica-ting downward. What charieh- - age8s+cge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. sin mder wgv+8*i g 4+;/cjo/ r;xcd9xThe ball is placed inside a uniform electric field, and iro +*4im;vg/d ji+;8wg9cx ne rxd/css 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 chargeov67 axjv- 3aw of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's su - a7wvoj6xa3vrface?

  A metal sphere of radius 2.0 cm carries a charge ow zy2vglj+ +y m9ma)5if 3.0 mC. What is the electric field 6.0 cm from thv++ 2w gjmaim5) z9ylye center of the sphere?