State the law of conservation of eleca44xn2ty 6 u8 cqcnx(ytric charge.

  Is it possible for two negative charges to attract eacppm/j c-+6pmr h other?

  Is it possible for a positive and a negads09f bt(olq8 m1qst7cb )t7/enum 1mtive charge to attract each other?

  A glass rod is rubbed w2 ue8l jo0ez2with a piece of silk. During the process the glass rod acquires a 2wuj oz e02l8epositive charge and the silk

  A proton carries a

  The model of the atom sgs ogo-7(,fh v.38z:xxyrdx7 t jxs;nhows a

  A neutral atom always hasad 9 yh bpx4pow-3nm*2

  An atom has more electrons than p0:sq m/3sgr 9rt+trwa rotons. The atom is

  Materials in which the elecppw72 9n*4cfd2ul,zn wp6n1 e5vm wfjtrons are bound very tightly to the nuclei are referrpm6f n vwp4 zu9cp* d,fwwn2le75 j21ned to as

  Materials in which the electrons are bound very loosely to the gp *e.gs3 7 b)wmm0cvhnuclei and can move about free3)mbcg7 hw. sve 0gmp*ly within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Tlyit fyl v*q+-t03of :o 9a3lmhe end of thl+yl3oft39-*a lv0it fmy: oqe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positi8hq/t g- 2n/+ucufdf gve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corf- h df cqun+8gg2t//urect?

  How can a negatively charged rod charge an electrodt*0e qxuru7csj6 uxa;-gi 5(scope positively?

  An originally neutral electroscope is brh dm;vgl:tl px4 09+ w2w-exoriefly touched with a positively charged glass rod. The electros:o +pr-0 dm ghwvxtx2;4wll9 ecope

  An originally neutral electroscope is grounded briefly while a positively ch0ci*ov 7-m j6vq7mm y5hs j:tqarged glass rod is held near it. After the glass rod is removed, the electsh 7vjq*5vqo67 -c:m myit0mjroscope

  A positive object touches aq(cp +fp 0kt+t1o mbe0 neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch ipt b1c+ftopk0eq0+(mt. What happens to the leaves?

  A large negatively charged object iz2-s kzi4ybm,-jgc zft)o* 0 gs 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 bg4j-y)z,migoz*k02ft s zc-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 Coulomns( ,he;g/9vgklzl;nf4j6qk b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la5a iays rs4x/- 9db)f3xv1 rvgrger in magnitude than the second charge sx34) b1i -fryavag9x/rdv 5s.

  Sphere A carries a net charge and sphere B is neagxanwz.nu8+7bx ) k :fzx6x*cv 3t8f utral. They are placed near each other on an insulated tabla)u7nx6xfgz :z. *8ctvn xx8w3k+ ba fe. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ceuk + a ly2y8ppv27x,bertain force. If the charges on both objecuv+k l2b ay ep7yx,82pts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcenr-7 +gjnhh68uumn ,r s of F on eamrj8 nu,hu 6n+h-7rgnch other. 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 cat293tm)hjro v5m *w 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 original value? The force is nowo9vcj*rwmt 2 5ah)m3 t equal to

  An electron and a proton are separated by a distance of 1.0 m. Wh:9yhfa: ss4w j* b)kknat happens to the magnitude of the force on the proton if a second electron is placed next to the first electrf)j *4ws9nb :shakky: on?

  An electron and a protone qxo w31b:is6 are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is3 iseb: oxq16w placed next to the proton?

  An electron and a proton are k32br lpz-kst3( .lza c,fz7useparated by a distance of 1.0 m. What happens to the size of the force on the pro3a c -t 2.3kzzbkzlr,(p su7lfton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seconu1mb5my0/-sa vy)vlk d point charsu)1 bkvva/5m-ymy0l ge 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 the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. v kec0:ep22dd When a second charge of +Q is placed at one:ke p0ddve2c2 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 to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vex8qwl 2(zj hf/ctor?

  At twice the distance from a point b:q) oi bc+lk)4fch:acharge, the strength of the electric field

  Is it possible to have a zero electric field value bet*,xxo o633p 7 hvoislfbde8 4oween a negative and positive charge axb7 e4op6*8x,ilf 3v s3hodo olong the line joining the two charges?

  Is it possible to have a zero electric field value betwb ,*l 7pb,ldbjeen two positive charges along the line joining theb l7,d*pb,jl b two charges?

  Electric field lines near p:e* 9 drjwaq-78 / ,aaw8vvacbxiwi*w sitive point charges

  The electric field shown +a 9y04 h na01dexxmzz

  Can electric field lines intersect in free spcaa4 )ggcc1 x+7epg 58eafgzx( ) c4eoace?

  A solid block of metal in electrostatic equilibrium is pla.zfig5exj p ha:zz1 *.ced in a uniform electric field. Give a statement concerning the electric f 5z:*j.xe.paif 1hz gzield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each / 00bz5biba2)u jsnxzgiven the same charge, the electric f0jubia bxz5ns0 )bz/ 2ield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifmr lbt44h-f,korm electric field is directed straight upward. What can be said concerning the charge on the b lr kb-,hm4ft4lock's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaj+7hja9 lvb1wc3k -ql rge

  A positive point charge is enclosed in a hollow metallic sphers0msgqj 3-jd- -ksa)h3kyy a9 e that is grounded. As compared to thy) mya3k0dh9j ss-q-s g3-kaj e case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduct;:( 5p4zhm;jdym r8 ox*mzxocors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is nbqq0q:t.v (d $e = -1.6 \times 10^{-19} \; C$. 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 ms9 ipi zbh(q31any more protons than electrons does this piece of p sp91qhbz(i3ilastic have?

  What is the charge on 1 kg of pro 0f4wv:3ez8izdb (azp tons?

  An atomic nucleus has a chargeb;iuu/k jzl8 - of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by- ,nls5kj4) wyq1ed dn 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitukelwn)1d y j5 -4,dnqsde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forc3sfi7 hk451ce)ccrv abw: 1 zab-t; p.z-hdwwe between them is 1.0 N. What is the magnitude ofid)cz;hh ka1 -w e 5b3spz bf:.7wcawctv-14r the second charge?

  Two 1.0-C charges have a force between them oh35y 0fs 9tzld ig 0e(qzabv0(f 1.0 N. How far apart are they?

  The force between a byi)bf+9n v* q.defma /3u8ey$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i txhg;w i;*9gqnh r5e/nitially 2.0 cm apart, experience a 1.0-N force. If they are moved ihw* 9q5;g xrge/hn;tto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. T5 ambyb2a.; uxfg v8t(he 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 magnitu; x.b25fvygmt(aau b 8de and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed onvp k-3mr c0p:8pmwzu , the x-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 which acts on the chp3pm8r, wp-umzcv0:k arge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC g zxrqil10/fd;e3xg2at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00z1 f;xqlgr 3e/x d0ig2 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.56l:muyajlzfq : de 8 at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that a.yle5q : :ufmzd l6a8jn 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); ;6e(sm) qytlsyy nv9 f.-mw /m vdi:9pw9ji a;Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ;fitinysdqv)m6awl/9.w:( v- 9mp; eyjmy 9s net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 b)jsbr2-7 /vguvyu 1 m= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha- ymvjvs)gbu1r2b/7u t is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pla*yvwuasm1i 2c ,):2: ivyjq xzced at the vertices of an equilateral triangle which measures 31xjy,2: saq2)zv: i mycw*vui0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3g -*z4j2-k+x t3eqafgo lz;xk.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 electrostat2xjt;k ae- -*log z3qxzf4k +gic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0cbvp (suddjo1p(; 0 cf ;:o3mm m. Where on the x-axis can a third charge be placed so the net fo( ;v 0pufc1ddcomb; (p 3o:sjmrce on it is zero?

  Charge +2q is placed at the origin and tgie +jk,4h24 kuczg1 )or3wxl qo63y charge -q is placed at x = 2a. Where can a third positive cha2 g,iw 3lucxkhkj+4z1y4 g3eot q6o r)rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota tj4 ge7t*qmx4l 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 forc ) ;fxhru .br4m3ucgq2e of gravity by the attraction of a fixed proton some distance above it. How far above gqh);bmr .r x4u3c2futhe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thrjtx((ek9iq9zww b 4p. eads which are 30 cm long. Both are given identical charges, and the electrosta zbj4we p9(qk 9(.xtwitic 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 +4fo70s6t; wk0fds;+. nd omisb0e. What is the magnitude of the electric field at a distbd6 oinw f.;dt fs0m +oss;70kance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field atsola6gzwtsi53 e)+ +h a distance of 1.50 m from a 50.0-nC chargsat i+oe6 l3w5+gh zs)e?

  A 5.0-C charge is 10 m from a small c1:i wvp6 s:aotest charge. What is the magnitude of the electric field at thev1o6:isc:pw a location of the test charge?

  A 5.0-C charge is 10 m from a small test charge:yug: .z1x g:vmyiv(y. What is the direction of the electric fgyg(yv.m:xv ::z iu1yield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 7y ws(2b,tbfdhrs1/gh yg2 8o force experienced by a 1.0 w(gs1 bbh o tg82fdhs7 /y2ry,nC charge placed at the location of the test charge?

  Two point charges each have a valz8 ng+s o)t-y qaubv-7ue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweq+-t)g-vns y7u8ob z aen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meteu cz,hu*2 ce. xyat98j2hh la-r stick and a -4.0 mC charge is placed at te9-h *aajh2 ,y2cz8tl xhucu .he 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 wb v (./eqvxp8fx3s 1jof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line fq.13pve x/jswxb8(v joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are place+eh.)j5ign2fk8qls58qjo 6fueh(k m d at x = 0 and x = 0.20 m. What is t+ij mslq .56 fnuf h8eko()eqh8k5jg2he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of u;*ovvbgynj : xs9+f-a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squyvjf9g+-uo; svnxb :* are.

  Consider a square which is 1.0 m on a :-hk6w um wvez /5my,lside. Charges are placed at the corners 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 magnitude of the electric field z -h5mykw me,6vl/wu: at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in3-gw k oyczlmw*z7 5:c a uniform electric field. What is the magnitude of k -wcmgyw3*7 zolz:5c this electric field?

  A particle with a charge of 4.0 mC8mr /qd. n4bx,can bh; 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 eln9+t8co0k/a*qme/- j vplqbx c 4x y8rectric field of 6000 N/C pointing downward. Wh 8lcx9/rq +* /qxjb 0y4pkmo- 8acntevat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cre)4b ;dz)z kieoy0 f*arries 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 magnitu k0 )*);bzfz ey4rieodde and direction of the electric field?

  A metal sphere of radius 10 cm carri9qu9bks5ct27r + 0 zo .ezamzoes a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'sm9b9zrqe.zzao u+s72k5t0oc surface?

  A metal sphere of radius 2.0 cm carries a char*00 ,4qn pcjl:xo )cg-cmzmayge of 3.0 mC. What is the electric field 6.0 cnj0z4- g*mmx :yclc 0po)qca, m from the center of the sphere?