State the law of conse;iq 5nh fen ( tsr)k7q)i1zbd3rvation of electric charge.

  Is it possible for two negative charges to attract each othe 0s tad4 l3br(aduc 3yk1*zjs;r?

  Is it possible for a positive and a ne uyn g6by)m4pbx5pb.l7.u2rrgative charge to attract each other?

  A glass rod is rubbed wit2u - ycww4s(gc opy::fh a piece of silk. During the process the glass rod acquires a posc:sc-pfuww: ( 4 gy2oyitive charge and the silk

  A proton carries a

  The model of the atom shows5l cqkzz8x :pu18. nbb a

  A neutral atom always hk gpe,igh.( i 0c-npuwb h85q1as

  An atom has more eleb:-cxvb.nca +q,gw,d+k9z swctrons than protons. The atom is

  Materials in which the electrons are bound very tigh,x/ wh5uhf4y 9u+xr yltly to the nuclei are referred to ash 9u +xr4uwyhl/ y,5fx

  Materials in which the electrons are bound vepp i;.jqm0gkdh+pi kwea;, 03 ry loosely to the nuclei and can move about freely within the material arepip+ ;;kq 0hpg i,jk wea.03md referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.lm/ u77f/o jt/pt,hibg gn7df 6jk;o. The end of the metal bar farthest from the charged rod will 7 /76p fdo7,fbn.j/ ;uglhgk tj/iomtbe charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placel zed(kg;dw 99d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whi9gkwd;dez( 9l ch statement is correct?

  How can a negatively charged rod charge an electrosco;: xij vobzd86pe positively?

  An originally neutral electroscope is brieflyy;x f6nn:ph w mtz6:n7 touched with a positively charged glass rxyn6 :tpf7h6w:m;n znod. The electroscope

  An originally neutral electroscope is whiqdp,t+49zv2q v(2 tfq9n fgrounded briefly while a positively charged glass rod is held nearfhvp+q d9i2t,n( qw qvf 4z92t it. After the glass rod is removed, the electroscope

  A positive object touches a neutral eiky.bki//5lb lectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wh/./lbk y iikb5at happens to the leaves?

  A large negatively charged objepziqax ( /dxw -,v.ik26y pu)act 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 objec/y .-akup2,(d xaip )x6zw vqit. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units og5ezde v,6 ;ujf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge a9n qe0g b5 bqgo6d,ciw55gvq4noz* 6 )jrr)dis larger in magnitude5q 5wjdb0 o46 gq)o,5ngb vrniqe d*rzg69a)c than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e0m6 ia s dj0ch b)b.ii2wsj1px49l8ieach other on an insulated table. Which statement best describes the electrostatic fo 802hbb1da.iw sl0 mc i j96epi)4sixjrce between them?

  Two charged objects ar7u9zjv2 6pd 8 u,l6qvsdgwa ep v/0)nttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force brw/evjd 8da v96zlgpnq s60v)up7,2uetween them

  Two charges are separated by a distance d and exert mutual attractive t/-ku e,w h:ktfu82q esd1b6w ho;ww, forces of F on each other. If the charges arq1,tsh2 w tk8 :ewdue/bo-, fu6;hkwwe separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eacen er:,nasulr3( m 80w21ar9z/p vaok h 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 between their centers is reduced to one-fourth its original value? The for0(:, p/ 3rvzmarkan8eo u2ewl rn1s9ace is now equal to

  An electron and a proton are separated by a dr0zg ;)6ciu rwo-j:hlistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electror0lc6h- rj;iguz)ow : n?

  An electron and a proton are separazbx7f 2/swmuo816a* i f av:l b4nh6ldted by a distance of 1.0 m. What happens to the magnitude of the force on the first electhnw7*vaf 26/8 bm4ufxzbdola:s61 ilron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hapv+pp*o*agqs.h +.6pt q:sk 8gi3gaco pens to the size of c s*vtqpa+8hsaig+p 3 .k. p o6:qggo*the 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 ozfwq)o :/b k65rjgp7 of a square. When a second point charge of -Q is placed at one of)gwq6/ rb5fj7o:k opz 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 placej10lb0fx:bwz 7 btlw9 d at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's ve9bl jf0tbw1zbl07w: xrtices, 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 placed at one of the other vertices?

  Which of the following is not a vet6c6. fmaw;j,zzw2m 9u 0 rfllae+m,ector?

  At twice the distance from a point charge, the strength of the electric f8azmodynr4 .:ield

  Is it possible to have a zero electric8xwk:n(-o/p9g.vx4 itr gak wql c) a7 field value between a negative and positive charge along the line joining then:gkt-8g q(/iww. l 4xcxrk oav)a7 p9 two charges?

  Is it possible to have a zero elehbg :c ycfx3fby b*098ctric field value between two positive charges along the line joining the twbbfyfccy*g: 093 xhb8o charges?

  Electric field lines near psitive point cz4m72p7 g+ e,twbxd xtharges

  The electric field s ae;uyqwp 5/7ohown

  Can electric field lines intersect in free spqtfkx5w xn+( -h3/i( y;rogb -q zgpg.ace?

  A solid block of metal in et1ggxx8gh v il.cd;h+0sj8f7 lectrostatic equilibrium is placed in a uniform electric field. Give a statement c cgsgvxi81tfhgl0j+; 7. h8xdoncerning the electric field in the block's interior.

  If a solid metal sphere5 fj-2v5pbd gh9ysm4 a and a hollow metal sphere of equal diameters are each gi5d4 59vh-asb f2mj pygven the same charge, 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 w, 50yak86 hstfb:kh*ha czfo45 xrgh8here a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top zs a c085hxy4h,fk5:t*8ahhg frbk6o surface?

  If a conductor is in elect-so),jeqxj y1 rostatic equilibrium near an electric charge

  A positive point charge is enclosed ina3f8n;xq(bob e,g5f b a hollow metallic sphere that is grounded. As compared to the case wit f,bngxqe;8fa b53o b(hout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eqf)dt 19j/ kcpsuilibrium.

State Gauss's law.

  The charge carried by oneh14t ax; ;nfjy 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 prjhi8sg0j. ;q :x bbz(iaw8-aj otons than electrons d j8.-aag :80wh xzq(jbi;jsbi oes this piece of plastic have?

  What is the charge on 1 kg of protonsz69*877tmg+ msnclep;bzhn+oacq) j k / 5wpa?

  An atomic nucleus has a q 4m0q8j.esqy nnk g+u1xk5xx,+y (y echarge 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 cmzh)nf-57f:r *m nec vb, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elech*ev:f -rzbm5nf c7) ntric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw7z,j-5wc 34ajsp v hdqeen them is 1.0 N. What is the magnitude of the second ca7vpc sw453hz-,j q jdharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a d+ az:y--4.rq9 jmphl4rq d(f0sribtpart are they?

  The force between a zd kj1 o;3cvjt0ou32bnk,t t:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exp)n v0, av3qufderience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between the)n qa0fu3dv v,m?

  Three identical point charges oin +0 lvtwb18nu8m93ptbde. of 2.0 mC are placed on the x-axis. The first cha b8v eo.w9m i +p18nnt3bt0uldrge 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ch+xzb col) fl61arge of +2.0 mC is placed at the origin, -2.06oc lfb z1x)+l 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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at n gd(indzq18:x = 1.00 m; 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-mCdd q(8zig :n1n charge?

  A point charge of +Q is placed at the center of a square, and4/dth1 ur 2,m nmmav4o 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 t42t4a/v1d,hmmmu o nrhe 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 is487nwu6bcps : o scfjn.0iug; at (0, 0). What is the magnitude of the net force on the 5.0 n. w680 ;io:cfcnns 7 gspubj4uC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =sr:4ea *c y09fojk1 se -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of e 1:*seafs rcy9k40jothe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ihv 2ns+b0 d f,bemk6;u; do5n-e3w anof an equilateral triangle which measures 30 cm on a side. What is the magnitude of theb; 5uei okbam;fw ,n6vns-2d+n30 deh electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh:w vmz5o +lhvv ..0fvaich 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 force acting on it would be ovv.l5va. vhm:0z+wf zero?

  A +3.0-C charge is at the origin and a +b 9ys q k*cwkwx6j*jo23v gi(*9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the ne kjjbykg(s9ww*xq2*i6 o3v c*t force on it is zero?

  Charge +2q is placed at the origin and chslb-+lpuf 1dzf b:,8z0ta* 9ket2 ykyarge -q is placed at x = 2a. Where can a third positive charg0*t bzp-k,l yelfu1d+ bt2fka89: sy ze +q be placed so that the force on it is zero?

  A copper penny has a mass j1wv(oykkd 8n p/-z(g 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 d uq-x w1yrh.*up against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electw1-*uydr.h qx ron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduh7qlx*zrb 3p0 gola9q vw jx6i*-(r4ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ur3j9h x0p zi vq og7*rblxa(4w q-6*langle 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 magnitudee;3:1vkowtyhj )r 6cjump7 m1 of the electric field at a distance of 16:cpj 3;h)oj1m7 twk1 emvuyr.0 m from the nucleus?

  What are the magnitude and direction of the electricjw6co/;enh9 t9 gys4 c field at a distance of 1.50 m from a 50.9;cj9/cow ytsge6h n 40-nC charge?

  A 5.0-C charge is 10 m from a small test fhhba8 skfh/ceda9 ( ke 8534mcharge. What is the magnitude of the electric field at the location of the testes 8c 5hd a/ (3kfkb8mhahf94e charge?

  A 5.0-C charge is 10 m from a small test charge. What is thu *( .c tvin;my*--xk7bp:f d1ihyhide direction of the elec7 h.iyxc*bhvm1( d; -tin *:fipd -uyktric field?

  A 5.0-C charge is 10 msi 7 d7jwrbrk+i0ox49z a8o6h from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio as7krz xo4wbh897ji6di0 ro+n of the test charge?

  Two point charges each have a value oojm e *)lypm-+ccx v7 p)qpvks9zs*+/f 3.0 C and are separated by a distance of 4.0 m. What is tvp*m pv *97s-o l/s c)q+x jkycemp)z+he electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticc3j2.p6u+. rxfh cf 0l6emy exk and a -4.0 mC charge is placed at the 50 c.xu.mjxe+ec0yfc l 6362fh prm mark. 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 aav.e:urs e i-3nd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningis-r 3e:uave. the two charges is the electric field zero?

  Two point charges of +3.0 mC odl0fz *,dw+6 z0zea kand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the m, +kl0ddzwzf* o0eaz6agnitude of the electric field at the point midway between them?

  Three 3.0 mC charges ar iuef5fkkiin+ 1a f6dd 3muz:cvx1km)/ -.vf)e at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. F)k.i6 x1v3izfekai ) f/mdfv+dufnm -:u15ckind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pla1 7 yoqj(fyu o+h3m(sm;9oxgeced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.;m y fys9o1+( j73omuh(eoxqg0 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 ni)* g wob),:iuxi,s emC when it is placed in a uniform electric field. What is the magnitude of this electric fieii n,o iw:u es*g)x)b,ld?

  A particle with a chpo0 cou ,gnl:1l b;-7woblek, arge 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 masi8dbaaci.+r5cyp)9t s 0.120 g is placed in an electric field of 6000 N/C poin5ic8d cp.iya)a9tr+bting downward. What charge 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. The ball is placed is nv,lxv+r0;eyx q5+enside a uniform electric lxne;vqrv++xs 05e,yfield, 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 vo.kjy)fmzo 7mwp3 ,;.0 mC. What is the magnitude of the electric.vf73k o wjm),zyo p;m field 5.0 cm from the sphere's surface?

  A metal sphere of radius; 3j6f+ap. rdhuy; vr50tyxrr 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center d 3y0rjv rt;; +h.xufar5 py6rof the sphere?