State the law of conservation of el8 8ktnof.v.ir pr5p d9ectric charge.

  Is it possible for two negative charges to attrack0.l.+t6 gpx h25fsu1rldynnp/j 5ajt each other?

  Is it possible for a positive and a negat i9hf,ywjp/i2x :hzj)ive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod zz 9fmcv ;cje6v50n/z acqu/fz650 vczjvne;c 9mzires a positive charge and the silk

  A proton carries a

  The model of the atom sh:n8l; elq:u:ryc t2 dgows a

  A neutral atom always hayfvxd/)( tn ,ls

  An atom has more electron0m/m8j;vqhxuq 5 1ur bs than protons. The atom is

  Materials in which the electro ;:uwc ds(p,fe- ,xxa/ bj,xskh7iu5ons are bound very tightly to the nuclei are referreohx/5xux : fi uw7s -,cj;bep,ka( ,sdd to as

  Materials in which the electrons are bound very loosely to the nuclei aypuj8kl z7 tmjn .7t*gs/. r(hnd can move abou/k8 l*t(m.jgnz .7yrphjs7 ut t freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal exd8ka+o:,-w xvg*dn+q(vy rbar. The end of the metal bar farthest x8xd w+d,q *nak(o:ev+yr-gvfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B udm,rnpz0sa1 (kc. nt a+: ieu82ef1eis neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire.1ndika , uueas2m(1r0 n +et8fz:ecp that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posrfu(q9n1ep; ma 5w,ztu ge. 15y3vwotitively?

  An originally neutral electroscope is briefly toucheda5 uzdi2vxw vep0*q+0 with a positively charged glass axd*+pu50 2z0q vwi verod. The electroscope

  An originally neutral electroscope is grounded briefly while a.9mw81xk9 +)ynvbm 2nm wkcgz positively charged glass rod is held kmg8.n9b) 1n2 wmzmc+ywv9 xknear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and (9 r36,c qdk lmqggst.the leaves separate. Then a negative object is brought near the electroscope, but does not toucqg d.tgl(rcs639m,q kh it. What happens to the leaves?

  A large negatively charged object is placed on an4rtip r3q70q+qq j5bq yp -te: insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutt7q+q tqrq0yb4epi 5p-rj :q3ral 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 cons (tzol4g5 wcxb u*-o;qtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is layq5+qj u:xpiz .f/y d7rger in magnitude than the second char.xyj5qf+u : yqzi/p7 dge.

  Sphere A carries a net charge and sphere B is neutralkz, z/7(ahl oesx s0qbu(7:zs. They are placed near each otheq: 0zol/a7ssbx(uzk7eh,(zs r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otherk*:ebhq.ff8 /7wmxv f with a certain force. If the charges on both objects are:.vqm k8xwfb*h/eff 7 doubled with no change in separation, the force between them

  Two charges are separated by a distance en8;nu*+b qm1/edufq6flt x :;cuxm.d and exert mutual attractive forces of F on each oex;:flu 6q/nue+t81bd ;unxmm.f*c qther. If the charges 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 happrp4xj94 y *m7/q tmgf*rzd5qlqs5b5t ens 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 forcsjpqft7 9mmq l5yg/br5 z d q5**4t4rxe is now equal to

  An electron and a proton are separated by a distance of 1.0 xr:u- 46vk zcxu)y2 u1rzd-n 7hx4nulm. What happens to the magnitude of the 4z-x-d 7nhnx1:uzck r6)xuulv r2 yu4 force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hap w-24kcrwcy9zdq 2a:d anb7s*pens to the magnitude of the force on the first electron if a second eba y9cd qn4-7awkscd: 2r2*wzlectron is placed next to the proton?

  An electron and a proton are separated by a distance *b2umv 7. u0tvdfff l3of 1.0 m. What happens to the size of the bud fm.v0v tf7f*3lu 2force 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 of a squar. 24nbu xm6 vvyv+3gnaz:a5nwnn n+q.e. 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 center of thebg nq5nn4n+y2.v3az+6mv.nva:xun w square?

  A point charge of +Q is placed at the centroid of an equilx0 (fia;v4dqqateral triangle. When a second charge of +Q is placed at one of t0q i v(4q;fdxahe 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 following is not a vectou0pbnq ew/ pv 6/qip9:r?

  At twice the distance from a point ch73jam;ikzwquzq hy7s5t.a; -arge, the strength of the electric field

  Is it possible to have anx0o6azi qf./ zero electric field value between a negative and positive charge along the line joining the two charges.faz /q 06onix?

  Is it possible to have a zero electric field value between twokbvzx)-anrr4m m:kb dsd5 na 3z; .u()n m8ao9 positive charges along t)a mnou zv9a mxb;4r)z 5(kn-r sa3md bkd.8:nhe line joining the two charges?

  Electric field lines near psitikrqdo5hjgm u4m jn1/e o20,f 0ve point charges

  The electric field shown vt,k6gj*vpu6

  Can electric field lines npvg7j sk; d.p)l5 h6uintersect in free space?

  A solid block of metal in electrostatic equilibriu:t 6nu6:v kls1/lg ayow+ bl2lm is placed in a uniform electric field. Give a statement concerning the electric fa+: k661lgwlys2l /b: otuv lnield in the block's interior.

  If a solid metal spher,wpr0t uec+ay i8,tty7- xn0c e and a hollow metal sphere of equal diameters are each givecw 7, cixayyr 0+tett-n0 ,8upn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden ta2nzo1q3d 1t+pdp if*tble in a region where a uniform electric field is directed straight upward. Wh ittdq 12pd3p z1+*ofnat can be said concerning the charge on the block's top surface?

  If a conductor is in e nhqm+ d791kpf4do mc1lectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha6gfsdto* +pm8 c6;l*x. rnrget is grounded. As compared to the case wi* rgmfertd +x*long.68 ;cps6thout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta2u:c,ppmdctv fsl 3, ;sxq85 i av+u*otic equilibrium.

State Gauss's law.

  The charge carried bo5bygj mtniz1y,i /57 y one 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. Hol*mjsud r9ale8.tfr i53 (7dgw many more protons than electrons does this pilse* 3 r(9dm.ru ijaf875ldtg ece of plastic have?

  What is the charge on 1 kg of protpc v +:(hr8t*q9appj xons?

  An atomic nucleus has a c6l pzbeuaheg2 7v9-i ,harge 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, ro*6q1)e)4 v+ +ej digdmxkzj g u*eydq)d 6*fmespectively. g6io+ddvy )*m 1e) d4 *xzemjukj)qeg q 6fd*+What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chdbzbeehr8v1w43,uv 0;5 tmm v arge, and the force between them is 1.0 N. What zr 4tubm0e m5,vvdw;1vh83beis the magnitude of the second charge?

  Two 1.0-C charges have a t i3khc,rn) wwl+6vg- force between them of 1.0 N. How far apart are they?

  The force between a o+pw m z89.olnuoi wa:3n,5i t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialyp l 0.mhd0v.sl k.0x w*ur+*g urvy4bly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cvx+w4pk0 * g.ys*yb.00um rll. uhdrvm, what is the electric force between them?

  Three identical point charges of 2.0 mC asoj2 j. br0r h0( ok2eu-sg(zare 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 magnitude and dire(( jh 2 orej0azb2s-s.r0k ugoction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0-j lj-*dtn i6 .;eyd7opwyi4x-no:zo 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 d6.yo-di4exjn7oj*ztn -y p oi;l w:-mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ( j m .,87tngdpr4tmqaare located 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 m mmdp,g.jqr8 7 (an4ttagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the c3fl 4rq*.oh w02t,+ suwkxlwu -3 pahkenter of a square, 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 centerau3x. 0uprf*hlswt-,wqo2l+ khw4 3k. 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); Qk w ;9xwk,/)o t2icuuw2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0t)2i;o/wu w ,wkx kcu9, 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);-m1v sa2.xgbej. knk) Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the djv m2bs.k-n.e1 kx) gairection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atjre k)yz *(jm;a.fpcng1* g)t the vertices of an equilateral triangle which measures 30 cm on a s.pn*)e t ;g 1kfcy)mj zg*(jraide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargemaxew( .2ds w9s of +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 m.(9dxe2ws aw 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 ux h mdlm y.+ );bj7zhn)uj8,pat x = 4.0 m. Where on the x-axis ca,7d +znph;8)h. ljmumu)xybjn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherolv ecti x d1*c6pf+ o;-fb-4te canxc1--dtoc*iv +ltf pf46o ;b e a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to kp9:wwpak z3)tal 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 owbyp4req cj123np 5k0f gravity by the attraction of a fixed proton some distance above it. How far above the electro021qeb r3ky pn 5pwcj4n is the proton?

  Two 0.20-g metal spher(r1x e6( *rwds 4qqhkmes are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apardr 41m(qqrkh*6x w(e st 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 electricg h3* (--)sapj f6+dp ieescwp field at a distance of 1.0 m frp(g3*ecs s wde )6hi-a- pp+fjom the nucleus?

  What are the magnitude and direction of the electric f6je .s v2d6luzield at a distance of 1.50 m fromdz.se6vu2j l6 a 50.0-nC charge?

  A 5.0-C charge is 10 m fromoc n+8uctzog fsy 2v5*my6i,4 a small test charge. What is the magnitude of the electric field at the location of the testomuiv4t* 8 5 zgos,f c2yy6cn+ charge?

  A 5.0-C charge is 10 m fuxxybx*wc(w evo 9(6 .rom a small test charge. What is the direction of the electv6ywbx(oe cu9wx x *(.ric field?

  A 5.0-C charge is 10 m from a small test *bcq5 xm yo -lh5ju/;tcharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loct l5c ;qo-xj/hyu m5b*ation of the test charge?

  Two point charges each hawmu: *f::ockwk a9 r7bve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a cfa:r kw 9b:w7*o umk:point midway between the two charges?

  A 5.0-mC charge is placed atdw;rw x f(f. 4b;0y cjzjpmr): the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thedjm0 4();b:.x fcywr;wjzprf 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 cwlf2+e0 kag1cm0920o oqm vjqy sp1 g:harge is placed at the 50 cm mark. At what point on a line joining the two charges is the e e 2 yv0l0 gmo+2ckgos09jp :11wqqmfalectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed;krnaau khq2p -tu h/(9oxi*: at x = 0 and x = 0.20 m. What is-kta:u phunhik *r (9/x ;aoq2 the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l. ;w 4vw8gbuja*m v3nuast corner is occupied by a -3.0 mC charge. Find the electric field at the center ouaw *4 ;v.wubjn38vgmf the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners cy4s -d5kc 3bsj/-p6m nzg6wa of the square as follows: +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 4cgpjskd6 6-yb3sm- znw5/ ac magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenfuo ky r7(u;e84qn n,n it is placed in a uniform electric fiuqnf ,k8uy no7r4 (en;eld. What is the magnitude of this electric field?

  A particle with a chbfk6q/iv2qpalhd s xr2;/+d .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 mass 0.120 g is placed in an electric field of 6000 N/C pzsp5iyjtnk q yr.9 vk-3m.b :+ointing downwa jr z.v-k:tsy3p. q+b kn5y9imrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150kby. g f0u 3j333xstelo:0 ais 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 thes3k3t0foj:3 uyg3b a le.x0is magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of;ka1*zw,wtd fc9i wn3 +2.0 mC. What is the magnitude of the electric field 5.0cwz d1nfw3* wk;,it9a cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrgp ne/fr q3dpe0:; ns)ic field 6.0 cmn/e0d3pqgr;: sfp e) n from the center of the sphere?