State the law of conservation of elec9cn* aohe:d+; hug-;g q9zyjj tric charge.

  Is it possible for two negative charges to aj4youwjl/1 0ittract each other?

  Is it possible for a positive and a negative charge tovz-4wx7lht.3dafp ij ;9gy 8h attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gloy;y6iotamk b: k- h 0zall- z*mbvl;1h4:k;pass rod acquires a positive chzl04v p;yktm;lmh yk b:h az * ik:-oal16-b;oarge and the silk

  A proton carries a

  The model of the atom shown rl;t d9(mamq w fdtd;l;o*ce): q2n6s a

  A neutral atom alway9y 101o +;w;ni evldozmugr9ls has

  An atom has more electrop9cuf-zzeo)vahr ) :t-t. jb(ns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl*if kixuv i434 gubyhc6))pj.ei are referred to ufi)3 kjpi u4 gxhy.b64c*i )vas

  Materials in which the electrons are bound very loosely to the nuclei ants/ra m s8lh0etwu: po af4(iv4v,2n4d can move about freely within the material are referred to asuv4ra4pa2ih0l m/sv(ef ,tw4:s t8no

  A negatively charged rod is brought (*t c.(wcihn-ck gdc,near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod w(c .*wnk,-g (dh ccticill be charged

  Sphere A carries a net positive charge, and spheryhvk9bv +.zknv; z 38pe B is neutral. They are placed near each other on an insulated table. Sphere B is briefly tk93pkyh+8v.z vnb vz;ouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive584cs dd 4:vo c kgndehv/x)8cly?

  An originally neutral electroscope is briefly touched with a positivespx+9:,zt7 zn pkea w9ly charged glass rod. ke,p9+ nw:s xzta7p 9zThe electroscope

  An originally neutrah7oxq8n 1u46vkv2 u1p0ig rm tl electroscope is grounded briefly while a positively charged glass rod is held near it. After th ht4uv kiq71 0ompgx821n6rvue glass rod is removed, the electroscope

  A positive object touches a neutra:x+(he x0vyoa mpcw50 l electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to tw5(yx c0 ehmoax:+p0v he leaves?

  A large negatively charged object imcx 4(y/0fhc3zy3yil t jo3 r,s 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 object. At no time does either ball touch the negative object. What is the finalfc z, xy(33hrcyt/4l jom3i0y charge on each ball?

  Charge is

  What are the units of the Coulom hiu 1o/,z9m ggq+ugi/b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance nau g0 4vgdn 0w 14 g5-vh(.yudul2agjd. The first charge is larger in magnitude than the second chargg0d2 0guavhdl4w .v5ygu 1(ga- unjn4e.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne9;qcxb q+tyy8w0 kow,ar each other on an insulated table. Which statement best describes the elecbk woq ;+ wy,qx8y9c0ttrostatic force between them?

  Two charged objects attract each other wnl8 zo. z2ofx/v6xb3jn li;3pith a certain force. If the charges on both objecjln8xoz /v63 z .;f23lpibxonts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of gs(ka9 qyg 2tw/yxy);F on each other. If the charges are separated by a disa/syw(ggy)y;ktx9 2 q tance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens j otak9y*8f5 eyye56yto the force byoae9yj5 y e8yf*6 tk5etween 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 now equal to

  An electron and a proton are separated by a distance of 1.0 m. 1b9c8edw3dke jvq3 .yWhat happens to the magnitude of the force on the 3wq98.vdj1 ced eyb3kproton 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 happen9:u 5 gfpfpe*7z/s3qu d9sxpls to the max5 3l/fseqf sppp*u7g9u:d9z gnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 44,vyy efa (hwgp*0vj m. What happens to the size of t vw j0y e4v(fyp4*hga,he force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tst ug40 73dus(m cpl2che 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 s7tud cup( c0m3gl 42sthe 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 centroioc el(6*v ;q-nyrxdzi,f w6 ,qd 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 force that acts on the center charge due t6o*ly ; 6qrd,xv(nfq ziw,ec -o a third charge of +Q placed at one of the other vertices?

  Which of the followinp3jt/vp(h d/hzar7 kf611h vdg is not a vector?

  At twice the distance from a point/rfn* t-ou2qpor l.r ob)v-e biva911 charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negaca .txe1jw4 t0cadw/6 :b a+sctive and positive charge along the line joining teaac6x .c/: 40t + batd1wswjche two charges?

  Is it possible to have a zero electric field value between two po6v1dw;hu1 m b )aj56w9 phoapfsitive charges along the line joining the tw1wh6u) pa ;9aofd561wpvbmh jo charges?

  Electric field lines near psitive point cha /.,,oegwzit lwxpz6v-- 2fwh 1yd:t b2neh q2rges

  The electric field shown37gcioe* kse)- -ml l;v/ psdl

  Can electric field lines intersect yseg73 (xok(h qac 7.9vdm6z6zw/lwf in free space?

  A solid block of metal in electrostatic equilibriug bteg vih+h970 -yf)7 g(wekfm is placed in a uniform electric field. Give a statement concerning the electric field in the block's i 7hgbe(k 9g+yffh)7 t0i-ew vgnterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachnmz.5vmj3c :g given the same charge, the electric field (E) midway:z3vg5.mj cnm between the center and the surface is

  A cubic block of aluminum rests ontr * dt rg2h14x8iv-zg a wooden table in a region where a uniform electric field is directed straight upward. What can be said concer -rvzg1 hr4 *2gd8xtitning the charge on the block's top surface?

  If a conductor is ina i/n buvx.s)2z-r+sy4 jze (y electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i movwpi13;t*o d vc-)ge:9 (imd fa)bls grounded. As compared to the case without the hollow sphere, the electric field at a d:gec9b; oa)t- vlwoi( )ip3fv m*d1mpoint directly above the hollow sphere has

State three properties of conductors in static equilibpe5at8aeu u0t2ro*,s rium.

State Gauss's law.

  The charge carried by onuz -2 4qrudh;ke 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 protfb; a(waps ww30w2c 5cons than electrons does this piece of cw c3bsa 5; wpwfa(02wplastic have?

  What is the charge on 1 kg of proton me+hu(6rsz3 zi9eqe *rn 9zg;s?

  An atomic nucleus has a charge of m2nzconra 22ai(yb6 1 $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.q 3,6xb5pz (zzloi 7xi5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fo( ,izlop z67xib35xq zrce between them?

  A 1.0-C charge is 15 m from a ; b7 fl,dzei fj4y;pb-second charge, and the force between them is 1.0 N. What is the magnitude of the l;;ijeb4 pd fb7-zf,ysecond charge?

  Two 1.0-C charges have q q(d;).:wcn g phu/amna0e+ka force between them of 1.0 N. How far apart are they?

  The force between a qpj( ,wy;miv4dx1qo8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien2vz d.ldfarv.;lgt)l *bn i*3ce a 1.0-N force. If they are moved to a new separation of 8.0 )fl.i;z t.* ld3gvdn2bvr*la cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are p*u (l*/fo1hcv dgtk/ ;ks +twdlaced 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 h(k+cs /d*kw;glov/*f utt1 d magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the xic;g+mx 8jl:l -axis. 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 magnitude and direction of the electrostatic force whxcjm+8 llg: i;ich acts on the charge at the origin?

  Three point charges are locate +h oai9c;qe3k6 cknz6d at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00c3 kac6eq +ih69; okzn mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude 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 poiniiy(r m:.5/x x8a d 21aibimnft charge of -Q is placed at the upper-left corner. It is observed that an electroanm ir:i 8ia/5.m2x b1xy(dfistatic 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 = 5eox/(f l11ed/mk axuf9esa38 .0 nC is at (0, 0). What is the magnitude of the net force ox ou/d kae/a(81xfel es31m f9n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)b.u o /r3y*4s np8tags; Q3 = 5.0 nC is at (0, 0). What is thepuargt3bso n.4y8* /s direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver/q+* hsy/*(wltm.fo3g,di 84 zzd fexyd:p nmtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts qtpfi3zd+4( dyxz n fsm/* ./ gm8*ey:ho,wdlon any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At ul2,in*v:a hsv7gv4cn f6a*y 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 zer au6yi afcs,vn2*:n gh4*7 vvlo?

  A +3.0-C charge is at )c 7 :hsv 8 eyix9ew 7i2og,4cgs xkhrs2hn6*othe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so tc wsy* oox2e74x79gce h: sk, hih 82gr)6nsivhe net force on it is zero?

  Charge +2q is placed at the origin.v ixso0o 7ls6 and charge -q is placed at x = 2a. Where can a third positive charge +q be plac6ss70iovx .lo ed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.cs l , y(5gg:14vsgeab 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 a *b.r/fkwr : wlqij,.rgainst the force of gravity by the attraction of a fixed proton some distance/b: frw*wlj r.k,i.rq above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc0v or.8d1uyl eting threads wlo10er 8dvu. yhich are 30 cm long. Both are given identical charges, and the electrostatic 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 obx ye2nzng)9; umpbtk:.l5.pf +40e. What is the magnitude of the electric field at a distancey. zen)x2bptng ukb:m9.p l ;5 of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance ofhmp+) mb 8/-ul )d h0 v)ew1fs1gcwfwp 1.50 m from a 50.0meffhuvs0)mlww + 81 hp/1w)g -)bpcd-nC charge?

  A 5.0-C charge is 10 m from a small test charger ::t1v ywzrl 494hhok +mugw/. What is the magnitude of the electric field at t 1/lrzwy +ugw: hmto 94vkh4r:he location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the. i- d4h6z 0tuiy-eanf;o6 rmg electr0; ay4.drn-i6-gotf emuihz 6ic field?

  A 5.0-C charge is 10 m from a small test charge. wi htcx s;, .i1chd,pubx7e1( What is the magnitude of the force experienced by a 1.0 nC charge placed at t,d,t7e. i;w b s p(u11ccixxhhhe location of the test charge?

  Two point charges each have a value of 3.0 C and are sewsunzpsfig ;7l2)i 4 5parated by a distance of 4.0 m. What is the electric field at a point midway between the two chaf;s4 nip7z5luw)2i gs rges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC zoap/hh:t: tprv8c 2 7charge is placed at the 50 cm mark.2t ::7hrpv p/z 8acoth 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 stico1mj50x emh k;cxt/99 a iiw/ok and a -4.0 mC charge is plac1kxtj/im059 x9 i;whe am oc/oed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = .;g8 kjbi5mn) n.bpxa0.20 m. What ) 8 njk 5mxibab.;.pgnis 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 si c1sdr9cv l,w qt-0+fide 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.v l91t,d -fcr+c0siqw

  Consider a square which is 1.0 m on a side. Charges are plaoyq d89h/9 c)i-ibknmced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at qib i)9dy9/hn- oc8km(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 cgg /l507mol6p hqgr (fharge of 5.0 mC when it is placed in a uniform electric field. What is th5l(lhpg0m / q 6gr7foge magnitude of this electric field?

  A particle with a charge of 4.0 mv n6wla- 9w182n uuh ycj/.zmrC 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 massdb5 lkuc+)9d(zpg gw(-1hx og 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge p-c 5z)gdkd hgg+1 o9(b lxw(umust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries syn/l8)yf-*(u hzv hda charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended ahh*yl zsdnu)8 vy -f(/gainst 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 +2.0 mC. What a brps73rr /(iis the magnitude of the electric bsir arr7/p3(field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of )56 h,divgm7yv4 biyc3.0 mC. What is the electridiymi 4v5bhyg ,6)vc7c field 6.0 cm from the center of the sphere?