State the law of conservation of electric chax/t khswh t8xss+, 7h4rge.

  Is it possible for two negatt,fx:r4 p2 8 egqou;roive charges to attract each other?

  Is it possible for a positive and a negative charge to at k): 3g,,aksea+1f 6fvkiwatitract each other?

  A glass rod is rubbed with a piece of silk. During the t 3keok4 yvf-4,b)kkiprocess the glass rod acquires a positive charge ankk,fo i )t-3ke4bky4vd the silk

  A proton carries a

  The model of the atoe ar2 l/ez1t0xm shows a

  A neutral atom always:tilf:3v wyrt3edvw;+g , e6v has

  An atom has more electrons than protons. The atehung1 swprd-i8c grg u0,(0/iabcf +ht76(rom is

  Materials in which the electrons are bound very tightly to the nuclei 58k3m od(jvmtdo1z* a sf82qz are referred 5vz8qsa2zdfk3* mjo1o d8 (t mto as

  Materials in which the electrons are bound very loosely to the .4 chf rffj8uix. .bxk97qa1s nuclei and can move about freely within the material ixf4u bf 8s.hj9x1fq..cr7k aare referred to as

  A negatively charged rod is brought near one end3xt17f:h-b 7lf xo .ppqzug9i of an uncharged metal bar. The end of th93u b7th-7qoxlp. f1i:xfgp z e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge,dkc8 oev/h . wd,y uqo07de*,y 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 stateo vdoh, /c 7.dyek0u y,dq8we*ment is correct?

  How can a negatively charged 1y5ma -w lorb)rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positia o+ke 2l,(8saq s/jb4dfqs, zvely charged glass rod. The esq j db+, saaz4k/o8(lfes 2q,lectroscope

  An originally neutral electrosy d8r7z3,f2j7ps ybx acope is grounded briefly while a positively charged glass rod y7sbjz,y2r3d px7 8 fais held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves se/ufrqo;* m o:q.*kftyparate. Then a :.t/ yfq*;fokr o*qum negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is+eym /aw 1ho a 7a2fep,(y:zxmkm po1m4cp)b+ 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 forwardb + 1ckyom2(paaa+wpm e)pfxh4y1 oe7/mm:z,, 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 constagm21w7y;ej 4vi*ux rrnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargm jy9.8cnz6lgj u/b0v e is larger in magnitude than the second chjv /68 y0m9zjn.lbcguarge.

  Sphere A carries a net charge and sphereh-*wbvp jl tvb..2: pjtoo .ss*iw*e9 B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between th .j9.si.vhl2*op o b:sww-tv jpbe*t*em?

  Two charged objects attract each other with a certan as( sr4n0w2rin force. If the charges on both objects are doubled with no change inw4an sr(02srn separation, the force between them

  Two charges are separated by a distance d and exert mutual at fu qb.g4 4m,lrl;,zimtractive forces of F on each other. If the charges ar;4 b f4g.,zrmu,miqlle separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fte s .gk(a1gf wk:gb.:orce F. What happens to the force between them if one charge is doubled, the o:gabggtwk.f1:s (e .kther 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 sepsv.t 5m) axyn9 xpj(j9arated by a distance of 1.0 m. What happens to the magnitude of th(t 59)v. ms9ajn xyjpxe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separate9 v-w 9kamux0nz(e9 mnd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to 9e(m9n9ak-xzwvm 0 u nthe proton?

  An electron and a proton are separated by a distance 9abme/m2px-pof 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5mp -ba9em2/ xp0 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When fvx(iu ds/lk0 ;n/lh9ubq.: a2l)z ara 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. Nd(b;lin9a. s:h2)l/ u qrza/lu xfkv0 ow, 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 plac) 3p0htbu shv*ed at the centroid 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 to a third charge of +Q placed v) puh *s0h3tbat one of the other vertices?

  Which of the following isb7gvj *k4s hvkkdl19sl:s: ;z/)k cnb not a vector?

  At twice the distance from a point charge, the strength of 9f29q acncqui(4 ;ctwm8: yfuthe electric field

  Is it possible to have a zero electrbkl-7jb - 3uv4(yj 6sl2zphlipk (k2c4hvm h 3ic field value between a negative and positive charge along the line jl6 pphb ck4 7s-2k (b3ijkh j3ullvm4(vz2-hyoining the two charges?

  Is it possible to have a zero electric field value between tephz h pd t9-u-7-;iaewo positive charges along the line j 79h; p-iuept--zh aedoining the two charges?

  Electric field lines near psitive point cha(zan yge 0l f7xz6)f3krges

  The electric field show8.;rv)f7s theoc wi n+n

  Can electric field lines intersect in free space?bke *togf*t5z/sy7: o 6g(woe

  A solid block of metal in electrostatic equilibrium isnvo71hx:2ofk u8:yx axlsh ,po 93;x j placed in a uniform electric field. Give a statement con7 9xx,8yj hup:ao3onl;:ko1 fxsxhv2 cerning the electric field in the block's interior.

  If a solid metal sphere an 0 ei,by7ee.-ryif)c dyx1q1 ud a hollow metal sphere of equal diameters are each given the same charge, the electric field (E)b7xduyf er ,0 y.1-ei)cqyi 1e midway between the center and the surface is

  A cubic block of aluminum rests on g(rxxsnc*n 37r)o3z la wooden table in a region where a uniform electric field is directed stra* n(xros3x)crnz l 73gight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nu1h*emr uyc76ear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grouk5z/(wr -r /) pafs;ezl4 mrgdnded. Arlr(p / zk4-/rs maf )w5e;zdgs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staticfv cj+z jy .ytpn,jrj3t b6-., equilibrium.

State Gauss's law.

  The charge carried by one elmd v)bpu(.p(z *p bth7ectron 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 m. l7e4gdfx; 6d5 jo9+i zpg0ipu;pjy gany more protons than electrons does this pi +egpyl.0;io i;zg6p9jd5pj gxu 47dfece of plastic have?

  What is the charge onmfu px7v0bcc-f3 ky16 1 kg of protons?

  An atomic nucleus haokye5u -,s lv c1hsp,9g35wg ys 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 charge4nh7n0; :czyzd rz q:7njzs2e values of 2.0 and -4.0 mC, respectively. What is the mag zczrsdzy4hn: q2770;z :ennjnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.7 ecx8uilrfv:x1c96 2q5m ntg0 N. What is the magnitude of ti1: l 7trnex c5x6cfm vu9qg82he second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are ay+jgh *r(x/e 28bc.nld:ylcthey?

  The force between a h3c( of+2s 9mdz7ow ev$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiaf,n4a yz q6t4wlly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the el,y64f wntzq4a ectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first c48q:v w v93k7ec5vhn vbj1ndc harge is at the origin, the second v3qc n5devc71j8bk hnv9:w v4to 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 origin?

  Three point charges are placed on the x-axis. A charge of +2.0 s2tz*laj h0/q7u s: (l k4uefqmC is placed at the o*hs ulqs(0j:ate/ 7uk2z f4lqrigin, -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 charge at the origin?

  Three point charges are lo f*0f1bvdefqj,z 4e .ecated 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 = -1.00e104 *z dee,f.fjfq bv 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 point 9phyvc hj5 9o,charge of -Q is placed atc ,j9phyo9v5h the upper-left corner. 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,6v(o s7 . 6citajt wkcz*54crd 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chvkc4idr ta*z.j(ws67 toc6 5carge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 8lgh*-3w ujvh3ihuguw / q 351yw7 ijgnC is at (0, 0). What is the direct8 5wji-ggg3ql/h1h y7ui* 3hjuvu ww3ion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticea3su31a- d gn-hkq(gt 0vrqe 9s of an equilateral triangle which measures 30 cm on a0rq dt(aqk n3-hv ga3 su19-eg 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 3.0 m. 9k- tys /s es8ns)+ mvp 1ba2ttddx;*fAt what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acti/fepstt )m x sb dk;ts2ns-819av*d+yng on it would be zero?

  A +3.0-C charge is at the origi54ym ;,h/ 5xgvseky vsn and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fo5sveygk;4v5y , s/hxm rce on it is zero?

  Charge +2q is placed at the origin and chaa (5/ e 1)dsdnh9xvvkjrge -q is placed at x = 2a. Where can a third positive charge +q be placedknsvvh1(/e 95 jddx )a so that the force on it is zero?

  A copper penny has ah/ymt t xh7id)6sym15 mass of 3.0 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 attractionl nkp.ab 0foq9/*zm4x f2 4a1wwxn -ru of a fixed proton some distance above it. How far abo 14.k2mzbf ru94ql w/x x aa0-pwonnf*ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting+5 :f 1xl)5o r kdqbgsyes+k+ii3 dmj9 threads which are 30 cm long. Both are given identk5+sqkg++x9i jbeyi3:s md5d f lr1)oical 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 of +40e. What is the magnitude of the el.;o ,ntu; jeeqectric field at a distan;o., jeqn;tue ce of 1.0 m from the nucleus?

  What are the magnitude and directio en r4-4k0es1 b0nszoen of the electric field at a distance of 1.50 m from a 50.0-nC4sen 0ozk0nr- s b14ee charge?

  A 5.0-C charge is 10 qg38k gbvj)a/m from a small test charge. What is the magnitude of the electric field at the location of the test chargg)/k8 ba q3gjve?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th5sinki 2g 1fp9gbuq; ky7m(*i e electric fie usy gfi*qikb;9pi2(mn 7 k1g5ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tha;nqblh+a +yw0z -dj( e force experienced by a 1.0 nC charge placed at the location of the tea z w- hq0+;yjnd+a(blst charge?

  Two point charges each have a value of 3.0 C and are selc l7)) 9js/npqxqmx+parated by a distance of 4.0 m. What is the electric field at a point midway betwecqp+lsxx/ nm )jq)97 len the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ory g93bbwt(ai0:c1 d76ah qonf a meter stick and a -4.0 mC charge is 3a 9wb6ydth0ac:bi q7gn(r o1placed at the 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 meterk8k2h yfnx2 k- 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 elkyhf- nxk 22k8ectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = x5qn cp/ g9qr0r;.waeu*(1hjru ia sfktb/9*0.20 m. What is the magnitude of the electric field at the poi.u/1x(/ ubek9t*an qwrrpgjsq ia 0 c* 95hrf;nt midway between them?

  Three 3.0 mC charges are at the three corners of a square oaz1;blov 7pf1f s-ip, j pe7g9f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of ths7 loa11jf v ppezi,- 97bgpf;e square.

  Consider a square which is 1.0 m on a side. Charges are placed ato(i *f2(dae .totgp 5i the corners of th oae(id *o2.g p(i5tfte 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenv vm75ks w-:rm it is placed in a uniform electric field. What is the magnitude of t-v v wm5:m7srkhis electric field?

  A particle with a charge of 4.0 mC . t(9j4-dy m2;t1cg hntauvvhhas 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 q+qioa2-x3w ie-r 9nh6000 N/C pointing downward. What charge must be pr2q+ -hwnii-3o qeax 9laced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge st.m5y2jug 4v 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 dust4.jyv2 g5 mirection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mhbxeg0n7i r,.gd7 g78fp 2 ,eebj mf(eC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?2f7jbepx,emi ( gdf bn,. ee g0r78h7g

  A metal sphere of radius 2.0 cm carriesi 4p yh87d ;ozx zdzed68ufo;7 a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphez8yh;7ze8ufpdz6d o;d 4x7 io re?