State the law of conservation of electric charlpvi1,zub21 x .kmmn6hyw19h ge.

  Is it possible for two negati8r a gkq)wtzl 9hi0 mv/-)ufx0ve charges to attract each other?

  Is it possible for a positivuf )phxlceeky3 s:j84q q. p4)e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri; l3xhon(j0eu ng the process the glass rod acquires a positive charge and the sxhlo; u3(0ej nilk

  A proton carries a

  The model of the ato( a1* a:mhlov ztcxjk1wc++9x m shows a

  A neutral atom always hasa-r ibi/pk8(2 *wug -x*mld iy

  An atom has more electrons c-1;ck -cmkqg than protons. The atom is

  Materials in which the electrons are bound vt e.j d 3mj33 jdem4l)0f;drhpyz* x)sery tightly to the nuclei are referres3.ye4x0dm)dm ptj ;jfe3*zl drj )h3d to as

  Materials in which the electrons are bound very loosely to the nucl9idyi11ff9fhdoy-3fsi0 38sig xkl*ei and can movls 1i 1f9 y8*isd3fxfyf9 -dio3g k0hie about freely within the material are referred to as

  A negatively charged rod is brought nm:n5wvjczz,+fuzq 5 f8 w 75iuear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be + fq555iw :z ,zumfncjzuv78w charged

  Sphere A carries a net positive charge, and sphere B is 7hrn vij/1ia vmsvdu1(n64x.- uah3zneutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which(nux 17n 3ahiad4mr/hv-j. ziv61uvs statement is correct?

  How can a negatively charged rod charge an elect2pwive/be9c 1 roscope positively?

  An originally neutral electroscope is briefly touched with a ;e49 xb(gu bltpositively charged gxu;t elb9(b4g lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a 1 e1 e /jcv1z)ixrf1k6lxyyjy9g hr21positively charged glass rod is held near it. After the glass rod is removed, the ell2xze ryjgc16xk y 1)1 1hy91r/efi jvectroscope

  A positive object touches a neutral electroscope, and the y2qr jxbx up3ddw+ ); d234qemleaves separate. Then a negative object is brought near the electroscope, but does not t23urbx)+qd4 ;e wdy3djx2m pqouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A ne7khmchf02e hi34cx)wk*y 5gdutral metallic ball rolls straight toward the object, but stops before it touches it. A secoi)fdc7hkc*mx 045eh3k h2 gyw nd 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 bgo:g u81du5; uduv8 fCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a wd6,h3egdua :1n - 7,zjglmyi distance d. The first charge is larger in ml,7- ,ug i3dwe1zm6:n hajdgyagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placex6x/) w 8xkhjfejhz5/d near each other on an insulated table. Which statement best describes the electrostatic forc/zx8j6x h /hkjf )e5wxe between them?

  Two charged objects attract each other with a mtvvr kg: qpn7 oe2t/z,cy95r *nzc;3 certain force. If the charges on both objects are doubled with no change in separation, the forcntk/*n,zc:;tp 35v7qc rz9y rgv 2emo e between them

  Two charges are separated by a distance d and exert mutual attract j).d src:z,tsive forces of F on each other. If the charges are separated by a distance of d/3, what z,dc.srs:t )jare the new mutual forces?

  Two charged objects attract each other o+ggev0-ety (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 oriy +t0(gg-ev oeginal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happenivfdtx*bkbetw* u *: . m;l0j*s to the magnitude of the force on tdu vb .ijewtl*:fk *;b 0xm**the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a w1sr8 hyvhi6hn.e .p7v bf7z1distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sb6ez. rs7nf1p1yhv.v7wih h8 econd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.7w54obrdi 8fj5vr uy1 - -tdri8)qewv What happens to the size of the force on the proton if the electron is moved 0.50 m closer to4i vjywuo w rfvd8-8i5-td r1r5qbe)7 the proton?

  A point charge of +Q is placed at the c b j6ret7.8m;fow critzsl+ 708;owa penter 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 j8of wr+w 6omsi.r; ;lz tetac08 bp77the 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 equilab78tx+o04caufiqu rr ,nk u**r2v(a x m:dx :ateral 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 ofxcr0ur fx:8:atv 4ru7q di*oa xu+m2bka,(n* 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 nc)o42r 7wlkcnuv ;/q zot a vector?

  At twice the distance from a point charge, the strength of the electric 00 wcbi,r olj +*/8giifdw/ ykfield

  Is it possible to have a zer kb u)qn2sgx9i:i9o,co electric field value between a negative and positive charge along the line joining the two chargcux q,b9k9o2iisng ):es?

  Is it possible to have a zero electric field value between two positive charge,mue o:8uahn*s alon,u*nhau o8em: g the line joining the two charges?

  Electric field lines near ps 4au(/1 cqanim8 qyhbyh-.c6ft( ib -aitive point charges

  The electric field sh)wiypivk v+9y05k6 k2h l4 ukuy0py/down

  Can electric field lines intersect db 9+ rf*wir, o vtae742)vculb1ct,g in free space?

  A solid block of metal in electrostatic equilibrium iimo1 yk-v3hh3s placed in a uniform electric field. Give a statement concerning the electric field iovh3-y m i31hkn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 13v v;h) kcykxgiven the same charge, the elek x;c)k1 vvh3yctric field (E) midway between the center and the surface is

  A cubic block of aluminuoz ,mz:ne*j )p6us u(tm rests on a wooden table in a region where a uniform electric field is directed straight upward. Wh:6uo,t psz*z ej()u nmat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charge*fx dvw )iry16d1 ,nbij 6xur7

  A positive point charge igc b9octjuz13-p4vb ) s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electri u c3-v1j cg4ot)bzb9pc field at a point directly above the hollow sphere has

State three properties of connzt1 .ovp 57 q1lyinp(ductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ic; :ejb a-h)pis $e = -1.6 \times 10^{-19} \; C$. 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 ma 4;ox -kg3i-kexvim7 dny more protons than elecii-;e 4okxmgvx73kd -trons does this piece of plastic have?

  What is the charge on 1 kg of prozo;k teu2f9+rlo )gs2tons?

  An atomic nucleus has a chauc0lt +8907z azkyo(nzh: wcd rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byzn4qp+ey, , q5cmhfvm io: 8-ugt8z+a 1.5 cm, have charge values of 2.0 and -4.0 mC, respect+t:5q,u m,ch nvymfz8 qp+a-4gioz e8ively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between zx1nk19+-ch ocwc3gxthem is 1.0 N. What is the magnitude of the second cco cz91kx-gw 3n h1+xcharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart i1rbsm vod46/+-yb cware they?

  The force between a 9eoo)wmib5tw8g1v n , 8-tikq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a)8pr+gf9cew ipart, experience a 1.0-N force. If they are moved to a new separation of 8.0 ri ce)9pgf8+w cm, what is the electric force between them?

  Three identical point6(l2(+acrt719eqtc xckdp gf 8szjo; charges of 2.0 mC are placed 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 +d8ctxetr 2k9q(jop17acc(;l6 gsfzmagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-a m.z -b:y6q(ojc+gx 2xzt(slw8 zge*rxis. 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 e t6cq-zxgm oy:wbrz .*(+2 (j8z lgsxmagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are lo 2 jfh1ml 8f0xghf9q8) k,niqbcated 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 of the force oni1, )f0nqfmg2jlqfhh8 89bxk the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point+/ p1k gu.ij9ij5h dtv6ry )ps charge of -Q is placed at the upper-left corne6j.iuk9j1/tpidrgh 5s p y v)+r. 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, 0.10 m); Q3 =5czu4bux4/acr v8)f y 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC ch5azy4xu 84v) rf ccu/barge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nCm o5jf*r5+pkvdn xk5 7 is at (0, 0). What is the direction of the n5jfm55on *v7dkkpr+ x et force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pla62ht7( a;x-syoigz q p4sune3ced at the 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 the charge-4h7qtp6u(s3go yne2iaz; x ss?

  Consider point charges of +Q and +4Q, which are separated by )k nevb*yt62,ybu.vo3.0 m. At what point, on a line between the two charges, would it be possible to place a charge o2 yk oybe,nb).6tv *uvf -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9iu k8zzfcjg hrhk*2n9ml 1;d83a38h w.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net 3hi2gazz 8klku*hmh9n8drf j 3wc81 ;force on it is zero?

  Charge +2q is placed at the origin andkn tr/ pki(y81 charge -q is placed at x = 2a. Where can a third positive charge +q bi8ntkkr p(y /1e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Ao*,7.fcz x;qdx+ i4o w2puchc 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 t1oskf f-d4mg z1hkf+ap h3e7)he attraction of a fixed egsk h3 4f1o+ -hzkaf7f)mdp1proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spherenp 4 -a6md4k7ovg2 lu)ki a6uw* roxk*s are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsi4o*)ulpa 47ua rknogk6k6- m vx2diw*on 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 electril v00dyaiydtnp9,y0 7 c field at a distance of 1yitydydna007l, 9 0pv.0 m from the nucleus?

  What are the magnitude and da;8d krv2(ixm irection of the electric field at a distance of 1.50 m fro (mrka8v; i2xdm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. W weh/-un*y9 mbibe 5tkj3p 4-chat is the magnitude of the electric field at the location of the test --t5bie4j /cnuepw*3m9 kbyh charge?

  A 5.0-C charge is 10 m from a small tes:vz nb mwu ,d566nw9nrt charge. What is the direction of the electric fi9 wdn6,u rnb zv6m5:wneld?

  A 5.0-C charge is 10 m from a small test charge. What isem laq9-9bibl /n:1 q- wpg9pc the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test c i-aql 9/bl:b pnpq9-1e9m gwcharge?

  Two point charges each have a value of 3.0 C and are sepa (.x hg)8dk84hays : 81ttg*mu mjotsurated by a distance of 4.0 m. What is the eleujh8h t.ssg 8t ydk*4t(gamm8 u :xo1)ctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark os 8 xr;wl6 7itorv(7wof a meter stick and a -4.0 mC charge is placed at the 50 cmw6 v r(7txolsrw ;8io7 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 st +vilh)m479tl5mjjwa6 )0 v i d3qvonvick 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 electric field ze omvm qi 6v)j+059d3wvlt7 h)nvi4ljaro?

  Two point charges of +3.0 mC arb5n- 6s( i3acwos8 nwnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pns a8b56 cnrwiw( -3sooint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0tr9 ,5k6gab yuat0utpc8zexppy -9 (1 .50 m. The last cornerauz(t tc -e9g1 p0a br6ytpy,5k8xup9 is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sg d;cuo-8+2c zj xk6xiide. Charges are placed at the corners of the square as follows+-i 86kx c2;xzug jodc: +4.0 mC at (0, 0); +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 a0c z, vbd:.ljx uniform electric field. What is the magnitulv,zj0xcdb.: de of this electric field?

  A particle with a charge of 4.0 mC has (a3cjl/wf7dta 3(mhz 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 a*v3 z3z36c+spbiurn)yxnvk 2g i )bj3 .x (zten electric field of 6000 N/C pointing downward. What charge must be plac zu.en3b6jz 3s+cb)v x3izni)32 vr*tpxk( gyed on the ball for it to be suspended?

  A foam ball of mass 0.150 uar(yl*l xr umkn+wt (sau+ *z.u q:8.g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direc wx(u u 8qas*+yrrz* n:+uul(kta.l.mtion of the electric field?

  A metal sphere of radius 10 cm carries a charge ofc ;0;.zro lufam8uh 0z +2.0 mC. What is the magnitude oc0zo;h8 lu.m;rzau0 ff the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha:o8ddn ,i xx3k+apo.rrge of 3.0 mC. What is the electric field 6.0 cm from the cent:8xa3, i.r+nop ddokxer of the sphere?