State the law of conservation of electric chargexk *y m7hl;h3p72xpcq.

  Is it possible for two negativeu k41hy. nhoj1)6zl3 k)d;n1xfxztl s charges to attract each other?

  Is it possible for a positiveaza2vrs7- :j lun/jx4 and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During 7q id:pzt)i;m9xzn o 0the process the glass rod acquires a positive charge andp;tq zd:90) on zmiix7 the silk

  A proton carries a

  The model of the atoms:+waa6 y 2jdk shows a

  A neutral atom always egp*z flo0;/ec5adc 5 has

  An atom has more elechwfh3ef ft6.7trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei ao-s;4. ,ddib2c q hnhx1 glal8re referrl .q; dxnaho,gbhi-2 1lcd4s 8ed to as

  Materials in which the electrons are bound very h*q h)2cd 6;lxxlcxs- loosely to the nuclei and can move about freely within the material are referrhxxh 6)q;cd*2slxl c- ed to as

  A negatively charged rod is brought near one end of an unc ym(.xqa5h sj48kj0rsharged metal bar. The ex08(4hr5sma syjkj. q nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiv(if.7xh9n kcilse) u)e charge, and sphere B is neutral. They are placed near each other on an insulated table. h7.eu il k9)i)(xfcns Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch*bar x6g 3p gu-9d05rgy p-qiharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a postu*s)d c0 snw,2yl6 epitively charged glass rod. The electroy wsl *tu260ec ,n)pdsscope

  An originally neutral electroscope is grounded briefl y:0yse k7 noh1onb:g0y while a positively charged glaso7 :gn1snkybyeo00h :s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavesdf+4a lylsq2tm 2. 1du separate. Then a negative object is brought near the electroscop4q.lyfdu22a m t+d s1le, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed onk+vfyz+ qjm1 n-q7q t1 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 followen7 yt1mj+-+q 1fvq kzqd 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 constah( ev4cgvkkia5bzv28+7 mevk qa;,:bnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di mru2rqzo3: )d n(n.g+l uny3ostance d. The first charge is larger in magnitude than the secondr ur.gm3dy )(lqonnz3no :u+ 2 charge.

  Sphere A carries a ner. u *7,awh9stiv; zwot charge and sphere B is neutral. They are placed near each other on an insulo*wh.az tru9w , s;iv7ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on y (qu0p rj,uy jmv8p(3both objects are doubled with no change in separation, the fo jr y8jv0(mp3(u,puyqrce between them

  Two charges are separated by a distance d and exeuk1 7ko n8fx2trt mutual attractive forces of F on each other. If the chargesounfxkk 7128 t are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force Fyazoepery1w6e-8l2 wwdc (t490px / j. What happens to the force bettw 1orzy2epa8 wp el-dwje0/9 46yc x(ween 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. What hap h7b83f sgotf5 / ;r;l)axbglfpens to the magnitude of the force on the proton if a second electron is placed next to the first electroltr5fb g);a ;gx o3blf8s fh/7n?

  An electron and a prt 8w :od*gwcd.oton 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 is placed next to wct .ddw*:o g8the proton?

  An electron and a protrgge-2oz xo(x6v- + waon are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the elewgoxeovx(- g26z +-arctron is moved 0.50 m closer to the proton?

  A point charge of +Q is plabb6 72,fwr cswced at the 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 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 positiw bb6,c72 rfwsve charge at the center of the square?

  A point charge of +Q is placed at the centroid o- wwuu j4vx.ec)cd uk7ly 1w-2f an equilateral triangle. When a second charge2 ylwv4 ckw1uu wc)-d -e7xuj. 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 at one of the other vertices?

  Which of the following is not a vec5ij9tnqkg94 tw2h: u ytor?

  At twice the distance from a point charge, the strength of the e*6,som;uh9wnorq b a5 lectric field

  Is it possible to have a zero electric field value betwee/lmohxa bnt4n7a 55jz (4 j9dsn a negative and positive charge along the lia5jaotz74d (nx jb5n94 ls /hmne joining the two charges?

  Is it possible to have a zero electric field value between two poovd5f2 ple3 w1sitive charges along the linevpe w 2o1fd3l5 joining the two charges?

  Electric field lines near psitive point chargesju7 si5xqlb*31 dac1 f

  The electric field s8jo;kw6 g9wk6 oa1x2 v 7ooopshown

  Can electric field lines intersect in free space?iyq 0ezva5/f 6

  A solid block of metal in electrostatic equilibrium is placed in a unifoe47g mmq4lq)tsvr) 9 orm electric field. Give a statement concqe)7m)o4 svt g l9mrq4erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar a (c+wjujrbo,/0-dvue each given the same charge, the electric field (E) midway between the center and the suj r(-dwau0juvo+b ,c/ rface is

  A cubic block of aluminum rests on a woodew5,n nu jq69cx 8 7smryqw6bp.n table in a region where a uniform electric field is directed straight upward. What can be said cocjq7r qnumx,6b w.w 98s5ny6pncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an el9yw4 c50 0nungdb u9sxectric charge

  A positive point charge is enclosed in a hollow metallic spher0 - ixs s8ti)ieibv2*)n1y9qe pfi mh8e that is grounded. xyv) 9si imf 8hi-ep8qeis) 21tni0b* As 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 static equilibmhz/+ vhm.ialz :4(ak, gnb e8rium.

State Gauss's law.

  The charge carried by one elecam+sj:y.;q r 2hird j1tron 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 manyfd5 1 cmpq 7 id54lqce(g3wr)n more protons than electrons does q )lnrcegf71qc5(w 3d 5pm4di this piece of plastic have?

  What is the charge on 1 kg of proton9l)0 sbu 4j6f vh3lheus?

  An atomic nucleus has a chargeg3vc h1t 5jduw 01:,24smr nxpkdvol1 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 l7pix*wsx v/ 3cm, have charge values of 2.0 and -4.0 mC, respectively. What ixis /*p v73lwxs the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second*7serj3cc5-2d52bpzw f bm ci charge, and the force between them is 1.0 N72ed5b*pjs bz 3 w mfrc5ic-c2. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartb4ku,d4cie+md*v9+al ha gk* are they?

  The force between a y,n3 :-paxxgs$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.07-)s)u8griyf 8ws u eu19vr *xwobg 3x-N force. If they are moved to a new separarf)w7rb18si3yu uv8sgw* )xug-x9o e tion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-a(r7xag7lkc3el u6v;xxis. The first charge is6;x3e l lkcr(77ugx av 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 electrostatic force which acts on the charge at the origin?

  Three point charges are place7ha p2ba6)c9ai. jltql-opv( d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C 6.q)clbla(o aha2-ptvij7 9 p 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 located at the following positions: Q1 = 2.00 mC at 6 31cq;qsjuu;r hvj4j x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 uj 36jjqsu r;hv1;4c q= -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 mk n+)g5* yoh v1z6j ddh/6ykzplaced at the center of a square, and a second point charge oohz/z6h+k ngy6dy5*1)k dvm jf -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 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, v+88ykb9m7trk ;cp (zxas*cv0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mag rp+v(caymks7 t 88*k c9bxz;vnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30+/ nls2kh e*smoy; ,jt m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directihtkjolm*; ,se+n sy 2/on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arqn q+g l(z6cbg -py4(ve placed at the vertices of an equilateral triangle which measures gvn -c(pgb(q6 ly4+zq30 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.m3yg65oa mw mx fo *cx025;m1jv3rjko0 m. At what point, on a line between the two charges, would it jo owxg1 k*6 majy3 5co5x2; 0mm3fmvrbe possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin c rhmq l11lh(e h0-law m,y,vc(br;e)and a +9.0-C charge is at x = 4.0 m. Where on thchhv1)-bl,rcql( arwe0m;l ,( hm 1y ee x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at tht1g es-64gp vee origin and charge -q is placed at x = 2a. Where can a third positive charge +q b gge614v-eps te placed so that the force on it is zero?

  A copper penny has a mas) ,bnmz;x+.t sgjvin; s 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 attraction of a fiagd8 k.a3omv3y)-rva 0ix w9 fxeddaw-g0vmkyo vai93) r.x 8fa3 proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point .0ngrx misvnl *n*cxd5p2i3/r18vg h by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic 0n8 m*1xgxr.dri nh25p c*v3sn /gvlirepulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus haheel82 mmd d:(s a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from th8m: mleh(dd e2e nucleus?

  What are the magnitude and direction of the electriu*zxla(chr-wkjf- 6w 6+-qcsc field at a distance of 1.50 m from af6wcu w z-ql-c*k-h6x+(s a rj 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t(mortd 3mard8)d (s gy-l7) pzhe magnitude of the electric field atm3 z sdgdoy-)( rr7)8pd(almt the location of the test charge?

  A 5.0-C charge is 10 m from oyjq a5df)m s9s97.fpv dy)g - ou.i/ga small test charge. What is the direction of the e od5vs )a/js 7uym9ggyf-i9fqdp.o). lectric field?

  A 5.0-C charge is 10 m from a sm2e/t25tfmi0 vkus* 0 mp;ua nmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th22 s* ;5vaeuf km0utpimn0mt/e location of the test charge?

  Two point charges each have a value of 3.0 C and are sepf ssaa15wy1 ihb+7k:.8ogbm ti 7xs2karated by a distance of 4.ky71i+ bsb1x:t7samak .8o 2sgihf5w0 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 mark of a meter sti;i;.dc q sh/ jt8u.kez9gw,bd ck and a -4.0 mC charge is placed at the 59u, dh gbkdc.q .j;/s t8e;izw0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of5jag : suihy/, a meter 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 electric field ghyai/ 5s,:juzero?

  Two point charges of +3.0 mC and x 9v.jtc4qtwh(4yf6 h-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude .cyq4(x 6hvh 9t tjwf4of 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 - lkx6c k7gsp)mxtu 722i:vivvmr3+hm. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squag 3hpc-vm7v u627 lv ixxsrkk2i:mt) +re.

  Consider a square which is 1.0 m on a side. Charges are placed /488nhhti hp jat the corners of the square as follows: +4.0 mC at jip/h8 hn48th(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 when it is placed in a uniform el:sl88pseu+g)h3 dgnf ectric field. What is the magnitude of this electrup)d8sfsh+n 8l g:ge 3ic field?

  A particle with a charge of 4.0 mC has a massr+ewp kjkb g*2;d(/(gas7 lun 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 dqxs1gh-f c ,*; (nnwiplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on thes (1wq, fhd*gcn; xni- ball for it to be suspended?

  A foam ball of mass 0.150 g carriet/3p3 yo9zh:eml qy 5cs a charge of -2.00 nC. The ball is placed inside a unif: z/mty9lh ce3q5p yo3orm 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 +2 zc:;;pkc 5en4tz,myu.0 mC. What is the magnitude of the electric field 5.0 cm from the spherz;um;cczk4,p e5ny: t e's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is theoaik 2d )d ..9rsprt/l electric field 6.0 cm from the center of the s t2r dr)s..lk 9i/oadpphere?