State the law of conservation*w6w6 oj gc)h-:a 5p 6mrszg9c javse08*biwz of electric charge.

  Is it possible for two negative charges to attract ea.a:e4 xzl4 72tlj8ragqjzpg(ch other?

  Is it possible for a positive and a 4jsu 0mtw)ud(a1dek o fk+ ))enegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gl g+dgm65tm z7 w0a)71cmntlnb ass rod acquires a mn) +7t1 ba5cnwl gd tmz067mgpositive charge and the silk

  A proton carries a

  The model of the atom showr(mn3r 5znduah glsjrs b(9h+x/(9g8s a

  A neutral atom always hasmrf4p)+3dm dgw*c*m 1yx bfm+

  An atom has more electrons than prot*u(di *i 9bkbfdoy1 r5n)mvv x 2g/hb*ons. The atom is

  Materials in which the electroejr-z6l el+66r*rif rns are bound very tightly to the nuclei are referred to j6rzf re- +r6*lil6re as

  Materials in which the electrons are bound very loosely zuvk(x+nyr qu ;: kf..to the nuclei and can move about freely within the material are referrxuk (zn.fyvq;.+: ukred to as

  A negatively charged rod is br(x8 bgoli0ewv 9z*.(6c o4bzysp px (dought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wilsvo86 picpdx (bz. *0z(l9bg xy4o( ewl be charged

  Sphere A carries a net positive charge, and sphen)e z99kz/z- 7 nnjeuexs4 yl0re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundeuesz97 enxk/z0el j 9zyn4-)nd. Which statement is correct?

  How can a negatively chargej k z9he 1b,)tn9ief*3pe+vwld rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched o-;t03p : d2gpsod,qei sct2d with a positively charged glass rod. The electroscop:o ,p30pdo qtdsctdegs22; i- e

  An originally neutral electroscope is grounded briefly 5k/b(o- d46c3py5ugjxcj fbo while a positively charged glass rod is held near it. After the glass rod is removed, the electr5543yb6kbuxcd cjfjop g /(-ooscope

  A positive object touches a neutral electroscope,hvfggmy63 ,1 u and the leaves separate. Then a negative object is brought nearu3g6vymh 1f,g the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabkxnuwh +czae +9m a-:)c0mz,p le. 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, a9+cx+z zp k-wuma0em:a,n)hc nd 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 )vjs hcgq wqxi5d v5trhd 47/qk2hc0y (+oi0: constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largkpvc7.73 grtad+ 00ge +gsqceer in magnitude than th q773g tgck.+p drev0c +gsae0e second charge.

  Sphere A carries a net charge and sphere B is neutr ;3vjp s)cj)j)4rhmpo al. They are placed near each otherj r m)s4o;jcv3)p)hpj on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects atcg grfn96am t;y1 uhy3:kv 1o,tract each other with a certain force. If the charges on both objects are d:9 cgvr ha,t k;gou13n f16myyoubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert ms/ q3qiv3vk yh20 u(vl8s8roz*vmb1vutual attractive forces of F on each other. If3q 8yv1m3 bvi/uvvss ho*0vlkz2q( 8r the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects aj4 acyh3 zd ;lx-;3b)q how7xkttract 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 between their centers is reduced to one-fh h3);-qd3xb clowyx4 a7;kjzourth its original value? The force is now equal to

  An electron and a pr(qb :t8muum kxf:r7o99cpoxvx+ x:5y kv.5cioton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second eleq+vy c(m:k:xkpx iuv9ux 7o b5o5xmtcr 9 .f8:ctron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What h/iz2y4m(7 0- -rlit v 0rjzmx( jzwcqgappens to the magnitude of the force on the first electron if a second electron iz0g0cqrimwj(x7vjz- ryz-2t4 ( mil/s placed next to the proton?

  An electron and a proton a2ofauug d*5 :vre separated by a distance of 1.0 m. What happens to the size of the forcuafvu2 5go* d:e on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q zi+4hiwz 5x 4his placed 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 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 cenhwx4 +ii5z z4hter of the square?

  A point charge of +Q is pl,b*6gah dxz1 caced 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 the magnitude of the forcx *ah,d6 1bgzce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followiw6*lqghoug h) k :t.h9ng is not a vector?

  At twice the distance from a point charge, the strengc k- 5*gstpl2p8g +b-dneat62qxs 7ac th of the electric field

  Is it possible to have a zero electric field value between a negative and posiwbbbdgzum y + x .u)5b:l4/x(ytive charge alo g m4bybx bu(dlbw:z+ux 5/)y.ng the line joining the two charges?

  Is it possible to have a zero elect-r4m dmxpi (i/ric field value between two positive charges a m4 mipr(-dxi/long the line joining the two charges?

  Electric field lines near psitive point char3taz*l 92dus66 fmbn1eela3 xges

  The electric field sjg*taop ,n p/9nw0v7 mhown

  Can electric field lines intersect in free spa(o2hpdb5pg 9wwsbb ;* ce?

  A solid block of metal0vu8kqelumi ye436* t in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inte*ml3 e8uv4 ke0ui6yt qrior.

  If a solid metal spherem caey* t9jz3u;;dqaf v.b)0b and a hollow metal sphere of equal diameters are each givefz. vt 0cm*39q;y a;)eau bbjdn 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 where a , 5xt. hymyhollv2p61uniform electh1y6.hy vmx2t lol5p, ric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele)zn1j6l4wo yt5gwpy y: oh/ j9klf7 1wctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grc, fi)c qxxuh)dm qe6+95co9jounded. As coq)f, cmjcqec5xd96oh xu +i9)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 equcq jt 7fzg;:d:+ iyf2xilibrium.

State Gauss's law.

  The charge carried by one elerjm7bj xe1 /1ictron 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 /gnpcq11hk2 .t bl6ro +2.00 mC. How many more protons than electrons does this piece ooq 1n klth.b6 g1c2rp/f plastic have?

  What is the charge on*fi ie5q; uo9vpn:i renf l87pv.41yr 1 kg of protons?

  An atomic nucleus has a cha*, vgz cr opr .smkww6+iig191rge 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,w vo6 wyep6c,;j y/;u):; dttcjzv b3b respectively. What is the twc;j:b;3p; tb)6odwvyj6ye/u,vzc magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secoghxu6zvk 8toro*3 c-1 nd charge, and the force between them is 1.0 N. What is the magnitude of the second charge? v61tk3*g-uoco8rxzh

  Two 1.0-C charges have a8q,h)7jzl6 p+ms05 ojr 7paaf*g ttk5)tsu yj force between them of 1.0 N. How far apart are they?

  The force between a :hej4xj ukqiir e(0/,$30 \; mC$ 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 force. If cc 8;/ p- bavjfr3q1dothey are moved to a new separation of 8.0 cm, what is the el1c 8qvfoj rb;/pa3-d cectric force between them?

  Three identical point charges of 2.0 mC a xfht55u4n csq ov+35ow)1tfcre placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and vn 5 )+ 5hf1tuto3cq5 wc4sxofthe 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 ch4+7tos7m og4a nj.viqox/ )ioarge 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 maov)7osxi mn4g io/+qot7j4 . agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positig ;u,jdmn o9oj*ho ;z4ons: Q1 = 2.00 mC at 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-; 49o, ;n*mgojuojhzd mC charge?

  A point charge of +Q is placed at the center of a square, and2a l7b,c wch-v/o+ bqb 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 co/q27 vbcbhb +w-a,lon 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)nwm 4ze)nn9.d ; Q3 = 5.0 nC is at (0, zw9d nn4men. )0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)j4q e,dh 7mles:-i h-b; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force hjm , q7sid 4he:lbe--on the 5.0 nC charge?

  Three identical charges vcgc aq 1/7za9of 3.0 mC are placed at the vertices of an equilateral triangle wh/v79a gzccq 1aich measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges oyrf+bo(/m jj 4f +Q and +4Q, which are separated by 3.0 m. At what point,m+(r fo b4yj/j 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 : p:q9 ox3g/jo;k2uib r xvnt,is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeo x px :vui:jng2/kbr;, 39qotro?

  Charge +2q is placed at the origmh*cf(l 5mp3 hh0gzo(,vxw f7 in and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is fpmw,zchgmov5 h*( 7 x3lh(0f zero?

  A copper penny has a mass of 3.0 g.-:s;zg 4 b/x9phflszgrjx,v- dbiy 5/ 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 againw:,rt ykb90 kvt4s,vtst the force of gravity by the attraction of a fixed proton some d4:rywv ,ttv9k0sbtk , istance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n aj.u y9n)onlv4u j dca5u+;p-onconducting threads which are 30 cm long. Both are given identical charges, and the ) u5ya-d4 .j j9+n; nolcuuvpaelectrostatic 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 charge of +40e. What is the magnitude of the el7a*+f l3h k8rr) mktc.npwo+b ectric fielcm) tna3k*rrb hw7 o f+.+8pkld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance 4tmtuv; l04hs of 1.50v;mhu0st l44t m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude h)5f ,dxjpb , ux3xb3yof the electric field at the location of the test charguh,ypxbd ,3j 5f )bxx3e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of)p y qe/bll8s9 the electric)p sqy8lleb9/ field?

  A 5.0-C charge is 10 m from a small test charge. What is + 5jse at-npm1the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tesen1ts-jm5+ pat charge?

  Two point charges each have a value of 3.0 C and are g)k,v:hnx(b jseparated by a distance of 4.0 m. What is the electric field at a point midwa( jnvx):k g,bhy between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a f4fi 3phvk (qq:)ijsbb/aq08-4.0 mC charge)fbq ii q0(j:kp8hq4/3 fsavb is placed at the 50 cm 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 and a -4.0 mC char.9b, cbor mxayuhun 7:l3x1ct5(o 1z5h1 jsgrge is placed at the 50 cm mark. At what point on a line joining the two charges is the electrlhz1sgh9(nomt 1brr:,c3 7 jy 1ouxc bu55 .xaic field zero?

  Two point charges of +3.0 mC +8- jlbnv.p .i m8vbseand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude ovbp.m8 lv.-+isj 8enbf the electric field at the point midway between them?

  Three 3.0 mC charges are al 8gpvt6ozvt1 bx3-0k t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tlxt8 v1 g-tb0p3 zkv6ohe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the q;us:pak doz97-kc)a/dv s:b t9ve3zcorners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at ddao p )9z7v39zk s; qast::b/v-u ekc(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 c:0aqdqhp rv/;d ghspg+(a037 *n oghoharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elgrvg0 gh/n +d0a( 7pq;s*d :ohoaqh3pectric field?

  A particle with a charge oft+oo1m uwthdu :r hi,t/ pr)/1 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 emx6bh*7j:p rcg a-k ht/n) b.znh 7t(ilectric field of 6000 N/C pointing downward. What charge must be placed on the ball fotihn.m6b 7hn )b7px c *jhgz-a(r /:ktr it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC 1yv;s5 3wce ,oq1-dkn l/cgw1n)mdoj. The ball is placed inside a uniform electric field, and is suspended against the forc;ok,y 3d/g1 eccm-w1 lj5 )nwvn osq1de 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 .azshg*qudsb,me 2o1 5. 1tvtmC. What is the magnitude of the electric field 5.0 cm from t .t2shm .1z1dq5os ,a g*utbevhe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t q 6o+.gto:owfhe electric fietqo+o 6 .gf:wold 6.0 cm from the center of the sphere?