State the law of conservatk58bceadt*7*b :bjfbk0 pcs kop62c2ion of electric charge.

  Is it possible for two negative charges to 4b :nx25unwo keydav -bw*//sattract each other?

  Is it possible for a positive and a negative charge to attract each oth9. o)t;vtrzahw3q7 5 uhtdch 5er?

  A glass rod is rubbed with a piece of silk. During the process the glass rod)s bstoc dxqy. t*9;t1 acquires a positive charge and tqobssc1 t .)tdx 9y*;the silk

  A proton carries a

  The model of the atom shows s 6xc sdj:m/u6a

  A neutral atom always ha on3l9*iix e 6+o3jehss

  An atom has more electe6hmp pf6l1gu )d-u)lrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrvcks-wv , a-r h(kca*x 6l,(5vc.fqswed to asxwasa6(sr vc- v-fkw.lc5qcv,k *,(h

  Materials in which the electrons are bound very loosely to the nwtfsvu ww.llf+a/x -+l,7np-uclei and can move about freely within the maa n.tfu - +/xwlpsv-w7 w+l,lfterial are referred to as

  A negatively charged rod is brought nel udj*1i;l*h/nj f6 viar one end of an uncharged metal bar. The end of the metal bar farthest *;llu *hjfdi6jni/ v1from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tkzvxyu;j1(p 090iae c :po7myc ob(:phey are placed near each other on i( c::1(ce; ybuvx 00oppzoa7ymk9 jpan insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po111fw 8bzr y*(lse ndvsitively?

  An originally neutral electroscope is briefly t;dcjnu w)ln 84ouched with a positively charged glass rod. The electroscolc8dj w4 un;)npe

  An originally neutralw)05:sjwatubwa(+ xo4/0k u q8oiz px electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electb4(oa 0pz qx8 uk oax:iw5w+ut0)jws/ roscope

  A positive object touches a neutral electroscope, and the leaves separate*lx 0p2hryv b.ufe bf1.,st+k. Then a negative object is .sub,pxby*r 0tkf2+flvh1. e brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed vb 9nac :x gye5gcl7zrt)q*)3on an insulated table. A neutral metallic ball rolls straight t3elz y )g:xqv7a5gcb *c9)ntr oward 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 final charge on each ball?

  Charge is

  What are the units of the Coulombv+dq ge/lh)qkz 0u8.b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distantt: + 1od stp1tgmjd.mz-/ 2tjce d. The first charge is larger in magnitude thtmtt p:1+1-2m/dd j ojtszt.gan the second charge.

  Sphere A carries a net charge and sphere B is neutral. Theyj7rivb- yeh7 ;gn*h)e are placed near each other on an insulated table. Wh7e e* hn ibgv7r;y-jh)ich statement best describes the electrostatic force between them?

  Two charged objects attract each otp 3v1n eirr 0j;9z)smmj8c+sbher with a certain force. If the charges on both objects are doubled with no change in separation, the fmi)1 8nv jsbsr e0cpmr3z9 +;jorce between them

  Two charges are separated byt.4 :/dvm)wmcf 39frql j -x;.dltoa a/va-ev a distance d and exert mutual attractive forces of F on each other. If the charges are sepcmtdw-a ; q:a.3o xj vvlev9/-d .rft)4 alfm/arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrac)olq e;js: ;fvt each other 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 original value? The forcl;)fq; : ovesje is now equal to

  An electron and a proton are separatem(t o;iodr8 2r*w9k s ds/wf5vd by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n8ski5w (/v92srwoo ; mddf tr*ext to the first electron?

  An electron and a proton are separated by a disz1niu*( ;e vistance of 1.0 m. What happens to the magnitude of the force on the first ;vsnz*i(i eu1 electron if a second electron is placed next to the proton?

  An electron and a protonq/e/9 o*w, k d4njyv6o ekh1jp are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is hkjje ey 4poq/w1 6/on,d9k*vmoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cetzkny2kk9ug 7 dd+vr :c9: n;znter 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 the square's center. Now, identical charges of -Q are placed at the other three corners of the sk+ 9dgnd :z kkn9v:2cr;7t uzyquare. 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 sw /d 5p.xj(9w0k ogwm-,dgssplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at onmpg /x-jsss(w go ww0kd,9 .5de 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 i49c:fd t ,ces-8 lwl6aibg 2c81czkv a vector?

  At twice the distance from a point charg.v+x eud7of 5le, the strength of the electric field

  Is it possible to have a zero electric field value betw)+w v dt7v,svaeen a negative and positive charge alond7,v vsw)at v+g the line joining the two charges?

  Is it possible to have a zero electric field value between twog.qu e02 jn.3zj3tld m positive charges along the line joining the two chargzlejnj g.mu03q3dt 2. es?

  Electric field lines near psitive ks,/aior;wb3 3 )ljoa point charges

  The electric field shown z7fb(8fy am5r

  Can electric field lines y.5rebk *i dly1cwv8/ r:s8lointersect in free space?

  A solid block of metal in elm0mxd y6r7vk :ectrostatic equilibrium is placed in a uniform electric fie0ym xmv76r :dkld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each e/b sz ag+i+,n.8iqs iah +1hjgiven the same charge, the electric field (E) midway between t8,qbi+ sh nez+s1.ii/ gaa+j hhe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region w7h3so(,: 8hsyupico hk*i t 3qhere a uniform electric field is directed straight upward. What can be said concerning the charge on the blosykc 33,(uhhtho 7ip8* o:isqck's top surface?

  If a conductor is in electrostatic equilibrium near an elecq +e )6;cz*nur;iavwdtric charge

  A positive point charge is enclose hlruv+:ys0 1pd in a hollow metallic sphere that is grounded. A r1yh:0l +supvs 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 s8seoh.q. 4i6wv5imwgwt * a;l tatic equilibrium.

State Gauss's law.

  The charge carried by one i;ig-gyf)pta0h4 4p m0aay+ s 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 morogu5.4 .8hhpeb;4v15 bl giiyf2wfrue protons than electrons does this pg .2;hgu 5 8y 4fii 15eolpuw4v.hrbfbiece of plastic have?

  What is the charge on 1 kg of p *wa4s2nlhb+t9ba g4bj*u : sgrotons?

  An atomic nucleus has a charge o r74 (ux9shjztf $+40e$. 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 mblu1.k;: u ynafbk6.jto ym1d57vd -2.0 and -4.0 mC, respectively. What is the magnitude of the electric ; dkj7.o.bn-t1m uk:f5v61l dy u aymbforce between them?

  A 1.0-C charge is 15 m from a second charge, and the force ,faf 2uyn6d 4fbetween them is 1.0 N. What is the magnitude 462yfn,f adfuof the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ar7f7r, (xcl +g* adskyoh(2mi oe they?

  The force between a ro, u 5q hi lnq2u)pcq.22vi 13q+ujqy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencql:l3x w:3vupe a 1.0-N force. If they are moved to a new separation of 8.0 cm, what u pl:qv wl:x33is the electric force between them?

  Three identical point charges of 2.0 mC are plack( 3nhp6pkw.aoys9x( ed 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 direction of the e pk39ahp(s6.(noy kwxlectrostatic force which acts on the charge at the origin?

  Three point charges are placmlih4j+ jl 3x/m2b4 iqed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5l /l3iq24 b+mjji4xmh0 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 located at the following posxga iy(,6cw+ 86keey, dk4eljitions: 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+jec,g4(k ikx y a, 8ldy6wee6 is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placehp0fys/8 m,fn d at the center of a square, and a second point charge of -Q is placed at the upper-leftm8spnyffh/ ,0 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, 0); Q2 = -1.0 nC is at (0, 0.10 m);:ukned3 6z7r lxhx( u1 Q3 = 5.0 nC is at (0, 0). What is the d:hle6 nz1(3xr xuu7k magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 8dq(o0k ;ju no9vn h9qat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force k8q9(;vnn hj 0 uood9qon the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed m p w 320x7s)mxh cmfv:15ikutat the vertices of an equilateral triangle which measures 30 xvm 0sc2wkmx57 hfu 31i:p)mt 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 3.0 m. At w 4b0p2ad,0vsxs+*e*j qifgy p hat 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 i* xp+4*vgbi yqapf0,es 0jd2s t would be zero?

  A +3.0-C charge is at the originr6wb ,wi 6v.fsdcw1d) and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be p6 wf,)s6wwbvdcr i.1dlaced so the net force on it is zero?

  Charge +2q is placed at the origin andf qi4wt3ejj/9qrw,bg+u /8mr charge -q is placed at x = 2a. Where can a thjftwuwer/gr3 j qmb,/9+q 84iird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. lefpx5wb*v/fyyx; t e//:6wsf ++omo 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 againsv q3k2lyj50wrf 72 mrwt the force of gravity by the attraction of a fixed proton some distance above it. How far above the electrow2k23rvwjm f0r57l yq n is the proton?

  Two 0.20-g metal spheres vm6+ dxbq p;6rare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces theb v6dpx6qrm;+ m apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has tgqfp3lx-viu1x4 . vh (p-zlqj6,pp5 a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?xi1jxq-5lvp34 z g (fh,u-p6qv.lpt p

  What are the magnitude and direction of the electrtgo78cueaet9rs1b z3* 0, a2bj o) yaeic field at a distance of 1.50 m from a 50.0-nC charge?,y )7 o3jeab8*9eg2acte0ub1szrot a

  A 5.0-C charge is 10 m from a small test charge. What is /1vkno:k /gzethe magnitude of the electric fi 1g/ve z:k/nokeld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th( rifsiq4(bz(e elb(fiz4qisr( ( ectric field?

  A 5.0-C charge is 10 m from a small test charge. What ;*f);va l,y umegk8h(of08w2d yxvbl is the magnitude of the f * l0yfu2ywbk f8;m;8dl(e)v ag,v ohxorce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and areaj*: jgc af h7sw/ohltvpw+07 .mj;-v separated by a distance of 4.0 ;a7j.g *t-w/v+ laco7mhj :f sjwpvh0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mar lu; *ypkdp69brq5 )dlhr7kt)k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. bdydpk5k)q rhu)rl7tl ;6*9p What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0e1; :lyf84 qzslk;zd 1sim 4ds cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poinyleqm s1d k1;isf4;4zs8z: ldt 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 a2 pvijwlh-h3n9bf .y9mc:b e9t x = 0 and x = 0.20 m. What is the mpfvnhm9b .-9 wh:2b iycelj39agnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three coreuv+ bt m stf q+p4p888mw4lo+h*a( stners of a square of side 0.50 m. The last4fsp 8mlht4tmo a* 8eb( s +pvq+8w+tu corner 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 side. Charges are placed a3a7 3w1jlr-ln x )ulrt x)x*awt 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, 1r-w1 l*a37wr l3a)n lx ujxxt)). 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 a uni0pq qzei ,53xhform electric field. What is the magnitude of this electric fi, 3e5zx hqpq0ield?

  A particle with a charge of 4.0 mC has0xt9e2.nqfq j/ k gbr1 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 oup jpma7l ;wlkc* .-l(f 6000 N/C pointing downward. What charge must be placed on the ball for it to be su muplc;lj-a ( w7.lp*kspended?

  A foam ball of mass 0.150 g carries a chargqa pmz:g5jt)gu /ll z hr8gc-9(rz .k+e of -2.00 nC. The ball is placed inside a u/jzu:al lq-9m zrgg +zk.pt5g)(h 8rc niform electric field, and is suspended against 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+ )9)h 7et7uyw;o.x jjw pnans +2.0 mC. What is the magnitude of the electric field 5.0 cm from ) nw)x;tajny7 7s.9oj+ue whpthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mqzpd/ vk(:4 (.s acotyC. What is the electric field 6.0 cm from the center of the sph(s/(c4tvko :azp.qyd ere?