State the law of conservation ofj w r:1j1- wskms:zt+v electric charge.

  Is it possible for twookw/6:p 2 jpco/no1 hf negative charges to attract each other?

  Is it possible for a positive and a negatrapt6o6eh;7: o 8em mrive charge to attract each other?

  A glass rod is rubbed with xbn x:uub5/e8 a piece of silk. During the process the glass rod acquires a positive charge ae5 /u8b: nxbxund the silk

  A proton carries a

  The model of the ato 6 +vwg6 bpn0ih,p,mqym shows a

  A neutral atom always9 lltkgh 4/u3q has

  An atom has more elec,((*hj )tjz8:jeh zqt icoppipw:jw (0a f/:jtrons than protons. The atom is

  Materials in which the electrons are bound very 6 ta1 a54oh/1pk6soa;qz kslatightly to the nuclei are referred to 6ao5 14k 1;6ptaasqshazokl /as

  Materials in which the electrons are bound f5j+j.tc4 . owot .dbjvery loosely to the nuclei and can move about fre4 j dwjobj.o5+ttc..f ely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged me4jnsm l0rpj s5e-8l3a(ot,n ogi f3 3etal bar. The end of the metal bar farthest from the8,nfpotsj3ea-n gm 5sr 0ilo33lej 4( charged rod will be charged

  Sphere A carries a net/q54bll2 r8ltts pe2( xp63 jtg3njif positive charge, and sphere B is neutral. They are placed nears3 jl8 lltptrnt(be2j 3f5g 2i/6 q4px each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged *wl;vq+ +idm3wbfe.9v4qp u u8lvvv1 rod charge an electroscope positively?

  An originally neutral elt*x6v pe;: wzcc- .nrrectroscope is briefly touched with a positively charged glass rod. The elv;cnr*. x6 cztpw-:erectroscope

  An originally neutral electroscope is 4hpxja 5hah /l/bxpl 2rdehh(3+o*/z grounded briefly while a positively charged glass rod is held near it. After thex+2eh/b 5aho d(x*zpj/l/4 hpahlrh 3 glass rod is removed, the electroscope

  A positive object touy 85en cz3dpx2m3fr7a ches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thef ycz8p752ax3 m3nder leaves?

  A large negatively charged object is placed on an insulated table. A neu 3oloe, ouw/ gn8v4it3tral 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 objecto 3 v olg,eui48tw3/no. 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 consu;w33o-0z jitfrft q6en3k9jtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fiid69 p6 jwwd.5f-vpfmrst charge is larger in maif j5mpp .df6w6w- vd9gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They a .b7k5r1p ep*+m;8ptrt ube xv 6nzld8re placed near each other on an insulated table. Which statement best describes the electrostatic force between ;p7n15dtu6xpt*ebl.eb +rp v rk88mz them?

  Two charged objects attract each other with a ceo *h- o +1gt6eyfbo32es7wgucrtain force. If the charges on both obo g7*g1 +o3b2 w hcfs-6eyutoejects are doubled with no change in separation, the force between them

  Two charges are separated by8.ceg: q,dw9s1 fu9 jwkhqjiq. r1nc0 a distance d and exert mutual attractive forces of F on each other. If the chargj wcjuk.,fsnd 99rec8.hw1ig :q qq01es are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What haphz;:i v:/si i gc5k1rhpens 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 force is nozi kv::i;s5ch /1rihgw equal to

  An electron and a proton are separated by a distaffu1 p,ks;, vjnce of 1.0 m. What happens to the magnitude of the force on the proton if a seco ,;ufk1svpj ,fnd electron is placed next to the first electron?

  An electron and a proton are separated by a distance x a)(0e3sja u9wcbdr91(ue thof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protona a1d xj)0bu(ush9( rec9tew3?

  An electron and a proton are separated by a distance of 1.05 h3lrfy0 ciy 9929nsb: kbsqe m. What happens to the size of the s0h r2 5iybq39clbe sk9y :nf9force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cmzp/p+vimz bbco /.18enter of a square. When a second point charge of -Q is placed at one of the square's corners, it is o+bmpmzo 8ib/zc. v/ p1bserved 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 placed at the centroid of an ei7a k3t ky)rq7quilateral triangle. When a second charge of +Q is placed at one okytk3a ir 7q)7f the triangle's vertices, 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 followingvnpgt x)63 yz ,fpa+rdf5- 1ny is not a vector?

  At twice the distance from a point charge, the strength qhy3b1s0y f9ci qp*-oof the electric field

  Is it possible to have a zero electric field value between a negative+fu- gs9rhne)ji js27 and positive charge along the line joining tgr h+7)j9-unjss ei f2he two charges?

  Is it possible to have a zero electric fielv-06 6m 9nwrg quu-hird value between two positive charges along the livgrm--nr6u wh q0i 6u9ne joining the two charges?

  Electric field lines near psitive point charg6cxamx 3 ew76u nm8/ u,alg8rves

  The electric field shpu1l:uddo.tq -wmns/gg(i/ - own

  Can electric field lines intersect in fr(sso0pu :v-ek ee space?

  A solid block of metal in elja c-s ,psnm8jy 477ilectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field l-aysi j 7n8ps j,7mc4in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofw l-dalyge kpo40d017 equal diameters are each given the same charge, the electric field (E) 4 p0d10wa7gld leyko-midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regic,*j cpwn; 3dhon where a uniform electric field is directed straight upward. What can be said concerning the charge on ndj* wh cp;c,3the block's top surface?

  If a conductor is in electrostatic equilibrium near an 2 l h;:yvetng.electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i0f7xnk:l;x7m +(yps w rbn ux9.x 5pfds grounded. As compared to the case without the hollow sphere, the electricpxn07 p+x(bsruy7 x;d5.9mkwln : fxf field at a point directly above the hollow sphere has

State three properties of conductors in statip9h-xd r0 ew0lc equilibrium.

State Gauss's law.

  The charge carried by one electron is :1e5zc yn u hq+wkd9*xu)xbn;$e = -1.6 \times 10^{-19} \; C$. 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 prot9de*whs2erk -6 awb(t ons than ele( b w whdekae9-2tr*s6ctrons does this piece of plastic have?

  What is the charge on 1 kg n j,pip; s+4pr gzxer/2b4i.h*)z wqoof protons?

  An atomic nucleus ha(r(vgvo dt-dnq7j,t (s a 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, have charge vqk,xj )8wel6 g2xl3tqalues of 2.0 and -4.0 mC, respectively. What is the magnitude of thewx3tx8q6l)2 lq,kg j e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forc, 8r+qwjz)p,*byq8sbxhx0vjqp (1cq he : w0ye between them is 1.0 N. What is the magnitud1 xcqr, bpsy8 (: +y,0whwzj pqhbq8vxqe)*j0e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa j9qdhskk laa7.fmw j-73ju:0 rt are they?

  The force between a /n:lgzsnz nb tswx (5tj:5z*- $30 \; mC$ 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. w5o+2vpi3 4un)c y qffnvi3)vIf they are moveduv3 +yv2i4coqn)v 3f5 pf)niw to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are bm(3 nj+4tug w6o3ptoplaced on the x-axis. The first 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 which acts on the charge at the orm4 bnuo33otj wt6p+ g(igin?

  Three point charges are placed on the x-axis. Ar*/ 3(rj2q/ awlbkobe 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 electroslrb *2(qeak 3/wr /bojtatic force which acts on the charge at the origin?

  Three point charges are lo lop :ume iuy-w;t*3:qlq6 dd1cated at the following positions: 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 -i wom3u:ld*1 qtul;qeyd6p: of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point chan 2t8 aeama4v9w i1h*mrge of -Q is placed at the upper-left ca wmimh81nae92 a*t4v orner. 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 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, 0cdw );/+ kiroe.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude+rd cei/o )k;w of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n) y ,lgshbz1+pC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0+ y1lb)hszg, p). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a h 77zn,k )n4xrxb*p3gek v4: gxujhp0re placed at the vertices of an equilateral triangle which measures 30 cm on a side. What zbr*x4,j)7 gxgvnnup hh0k4 73e:k xpis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges orz; q:tk4n q/jvqf67z f +Q and +4Q, which 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 actinq:qkz j4f7 n/vzqtr6 ;g 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 m. qk6.g:z dkt ( pg:rc4w8wpo6q Where on the x-axis can a third charge be placed so the ngzc6kor pkq:: 8pwq(64.wdt g et force on it is zero?

  Charge +2q is placed at the origin and 8vg)(ad z-c qib;6. pz(fcjjai 6ml:fcharge -q is placed at x = 2a. Where can a third positive charge +q be placed so(czai-pf(f jcqz)m ag v;. 6ljb:6di8 that the force on it is zero?

  A copper penny has a mass of 3./iwf)u6gylg k770x /gi .m(oxxogo1 g0 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 attrch3q ko 2q-d shco45y- o r:mi)fi4+siaction of a fixed proton some distance above it. How far above the electron is 34si5io4 qhcq)h-f:o-soi+ cy m2rk dthe proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads fnm7l8dkdj+i +;cat s v;ddb *c9.:wfwhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threac*vjddfsi. t8 :7cba+9d+dl nm kf ;w;ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whatd t5sm,( :qoszql(rk9 is the magnitude of the electric field at a distance of 1.0 m from the9kd q(5q:mrtsl zso,( nucleus?

  What are the magnitude and direction of the electric field at a distance35,fqd k va-lfp+cvh2 of 1.50 m from a 50.0-nC chargel-fh v+d 23pcv,q5fak ?

  A 5.0-C charge is 10 mf.j ph6k2(1fpgnk1czs y;ji : from a small test charge. What is the magnitude of the elect:i.s ; j6ypf1j2 kkp nzc1hf(gric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test 7po t 33rcoc3.dhbbk,charge. What is the direction of the elehbo tkbco ,733.pdc3 rctric field?

  A 5.0-C charge is 10 m from a small6psbb+b v+r l+ o3 odp6)8ifof test charge. What is the magnitude of the force experienced by a +brf)o+ plps+6 6fvo3dobi8b 1.0 nC charge placed at the location of the test charge?

  Two point charges eachjfa74y; kdr/ru:g6r;j 3bwx)epr z7j have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poire)4y:rg6;7bjkuarfr j;j/pw xz7d 3nt 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 chaa:ye4 n n02spf*nj+ g rb(irygd: lc4g6n3kq )rge is placed at the 50 cm mark. What is tr0en: ggn rb4f6a y4 incy+32qp( n*kgs:)l djhe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 qu25sn fcx34p cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elef24up5sc3x qnctric field zero?

  Two point charges of9,exz-l,dr1i/dw e gf +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elecr /g9xzi,fdd -,e1weltric field at the point midway between them?

  Three 3.0 mC charges are a +7ymzqr*no. at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the er. 7oqy+zn am*lectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thew 7qbfz4p)5kh*n(e u:fh4jg n corners of the square as follows: +4.0 mC at (0, 045be z47 j:)f( *ph gkwunnhfq); +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 uniforisqodv)c /jgnzm. 93+m electric fielc)qnj9d /vs o3g+i.z md. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha 8fer kb91*pbz rn2pp(s 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 field of 6000 N/9 0ets7jfboh ,C pointing downward. What chargehbjo7 e ft0,s9 must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriyludi5jnov 2 f:-tr94es a charge of -2.00 nC. The ball is placed inside a uniform-o ydnt2f :4 9lij5vur 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 5y:vw rjx(f+, w jjpe:a charge of +2.0 mC. What is the magnitude of the ele+p5 :j,wywv(j:rjf exctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriesl0 ynb0o+se)4+x nm2qzev hs6 a charge of 3.0 mC. What is the electric field 6.0 cm from the cen6v4oy esx 2hn0zm0b)sqe+ l+ nter of the sphere?