State the law of conservation of elecuxtc/ m:,0svxtric charge.

  Is it possible for two negative charges to att r15 6wo4lww2vtaea 4xract each other?

  Is it possible for a positive and a negvg+x*w(7c efkative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the 4av msp0td(;2m mub4i *(e 2jsfl*jnqprocess the glass rod acquires a p2*2qmj4*jn(lfds0p 4(miea sutmbv ;ositive charge and the silk

  A proton carries a

  The model of the atom shows ag b5 va2gpj ueg94qp1)2hitm0

  A neutral atom always wbrm 5o)4a 6v uu9x6rbhas

  An atom has more electrons than przeenquv);9oa77; a ymvl,+yio8v 3c jotons. The atom is

  Materials in which the electrons are0h 14r cxlkfrv() xr4n bound very tightly to the nuclei are referred to asrfcr(v4n0 xr 1 4)lhxk

  Materials in which the electrongewc r9/g- ;odzoc 6v206 xowwn: 1ct)fzhu8 is are bound very loosely to the nuclei and can move about fretnw8z6rdz i -: u6x9vc1wg2 w)cgo;of/eco 0hely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged twy5) ma/fl y9metal bar. The end of the metal bar yywf)l5/t ma9 farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pvt * a3607owe1qdj*za-gevh )gd1 ikulaced 0whivdve1 * a*akqug3dtj g )-oz167e near each other on an 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 b, iu 3fyj)ov9rci.vr+(ft.0pjv0wbs h ;x(pelectroscope positively?

  An originally neutral electroscope is9qyu)4 ibbc 9hkqf /ru+vms.* briefly touched with a positively charged glass rod. The electu/9mkf u)q.4vyr*h c +i9qb sbroscope

  An originally neutral electroscope is grounded briefly wacx. up m,du81hile a positively charged glass rod is held near it. After t 1pd,a 8.uuxcmhe glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav13p c/b l9cd5q 8t6 )udzh1qplhra6xg es separate. Then a negative object is brought near the electroscope, but dorgh6t5 d lbxqz19cqu13 8hpac6)ldp/es not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu6i vnlzl-s3 s*lated table. A neutral metallic ball rolls straight tow63 izvsnl*l -sard 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 Coulomb cone019dwz3qzuh stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i8gav+*ch 2n hjs larger in magnitude than the seh8n2j+ hagc v*cond charge.

  Sphere A carries a net charge and spherm5* zsxa enj5nvx t /2w2ed7h)d1v ;uee B is neutral. They are placed near each other on an insulated table. Which statement best describes the e2t j7/1zdwahd)v5 e;sxex5m e nn*2u vlectrostatic force between them?

  Two charged objects attract each other withlw2 p.,/d;kb9zx v3bfv.qf up a certain force. If the charges on both objects are doubled with no change in separationp b 3z2,kbw.dff;uvl v9qxp./ , the force between them

  Two charges are separated by a distance d and exepl tswzp;4 ,- v/eupc1rt mutual attractive forces of F on each otherpv4 w1,p l/ esc-utp;z. 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 F. What happens /y ;16mn;q wc g2ksyg7.u0q:hzfxowbto the force between them if one charge is doubled, the other charge is tripled, and the separation distance between thymk;hq2ugfs/z;wo b x :6qw 7gcyn.0 1eir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton ar;6h p1bp cy4v n(vzt8te separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plapyb61h8vp;t ( nc 4zvtced next to the first electron?

  An electron and a proton are separated by aoz2gmg 1tc h)4)c0zf c distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electrc2m z thcz0g 41f)goc)on is placed next to the proton?

  An electron and a proton are saay3.o7 5ulhx eparated by a distance of 1.0 m. What happens to the size of the forcehul.a 7y35oa x on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center w v/ spvm6 +17 .6yexdqga lt2tbc3ev-of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an eledx3awg/ lmt76cvt e.qsb pe2-1vv 6+yctrostatic 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 plac(g 1dz h0eh8nz(;h4 dngy:u4d ur)eeked at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an g;z e ey )h gh44:uuhdznn d0(k8e(rd1electrostatic 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 isp lmf uu.+or5( q6;ycy not a vector?

  At twice the distance from a p wk8zg 6:gd 8eyf:(ruooint charge, the strength of the electric field

  Is it possible to have a zero electric field vaau1o i8.kx, 64uap o)acnnm/ jlue between a negative and positive charge along the line joininu xn 8an1j) kp oi,am.cuo46/ag the two charges?

  Is it possible to have a zero electric field value between twojk 1 yuyc5ik04 positive charges along the line joi 45k1ui ky0jycning the two charges?

  Electric field lines near psitive point charge d hfr9py8+og7s

  The electric field sholco)vmj/ ufvg2 no3 aw26xer7: * 6vsvg6:az lwn

  Can electric field lines intel9 kpma- .d,hgk k)0narsect in free space?

  A solid block of metal in electx93 mvanxhi- 37d4vnxrostatic equilibrium is placed in a uniform electric field. Give a statement concerningd mxv 39 v7i4n3nxahx- the electric field in the block's interior.

  If a solid metal sphere and ap;cm11h drw 3(k4h)g u+amupuh.ar8b hollow metal sphere of equal diameters are each given up .+r4hch1mu;akpgad b 83)h(1w urmthe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherny 6e h212ms+ydov:i k 1edp9re a uniform electric field is directed straight upward. What can be said con19mp2d2yy r h6endsvk1 oi+: ecerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anko +ldzvw9 y i6qko+v2 w,-af+ electric charge

  A positive point charge is enclo0p : l 2oh.lpjhvt+o5dsed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere ho l ld5vphto+2j p0:.has

State three properties of conductors in static equilibriuma 8 gzbu4-5ozy.

State Gauss's law.

  The charge carried by one h.;ty b1zksdchl1qu( )ge1c5electron 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.dvn3sou/ w 16 de,w u,85f tnt-wpr/gt00 mC. How many more protons than electrons d 1ptfdwn-twgne u6 / v3w/orst,u5d8,oes this piece of plastic have?

  What is the charge on 1 kg of proto6d54,brp x)ygv1fwfa 1gapis/8 zno )ns?

  An atomic nucleus has a charn7,sppl-h8p b ge 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 charge values of 2.0zb c7hi.n0*4qh xuks2 and -4.0 mC, respectqb uk.*i s h70nz42cxhively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from f yv.wra45gw3 a second charge, and the force between them is 1.0 N. What is the magnitude of the second chargrgfv4 35w.ya we?

  Two 1.0-C charges have a force between them of 1.0 N. How f1bi pk3ro)a3 mar apart are they?

  The force between a x9 *;zw l)hfdv .x xd5ug4:fas$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initilry j5/o ud1r0 lwo3e0ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a newo1/y3oer 0ul5 d 0lrwj separation of 8.0 cm, what is the electric force between them?

  Three identical pointk1.jpt8crczf m)t2/h charges of 2.0 mC are placed on the x-axis. The first charge is at t .p21jck/fm)hrt8c z 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 placed on the x-axis. A charge ofyixd s u0:yo00 +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. u x 0ysdo0iy:0What 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 posittdi c gy(mq5//ghnp80ions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC att/g 0n8c g5 (ydhm/qip 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 sih*4thqi1,ok1 *oq f afr8ny, econd point charge of -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 t*ti ha*h8fky1 r,qo1, n ioqf4he 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 = 5. w 2ch fr-r-j// :nmojv12 veovgqeq230 nC is at (0, 0)hr v:1ejfv2v3/rcom2-goq wnje-q /2 . What is the 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 atu8 jxp2 k-8oej (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is xj82e -pjou 8kthe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at lqh-)v *97qpa lut4x zthe vertices of an equilateral triangle which measures 30 cm on a side. What is the magv t4-h7q 9u )z*xpllqanitude of the electrostatic force which acts on any one of the charges?

  Consider point charges y(u d*xxm d63)cbl f4jof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible6xlmd() d*4uf 3bjxcy 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 and a +9.0-C charge is at x = 4.0 m. Wher ce2q+ qsb1f,ld1of1hsml 2l) e on the x-ax fh ebqqls2+olcd112,1msl )f is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2l.zz gw:m3.dea7 o7tl a. Where can a third positive charge +q be placed e7 :z.3t7o lla zd.wmgso that the force on it is zero?

  A copper penny has a mass of 3.ijq ows /f08t,7c.zq o0 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 fixphop1(sfc 8 j/lit 6c1ed proton some dipjs8 l1f (6i/h1tco cpstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting c;eaom) nc976 uf jy+,h- eivkthreads which are 30 cm long. Both are given ieoamckeuin ,f9v7 ;h +)6c j-ydentical 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. Wha*b8hjth.+ d vmacq- 9st is the magnitude of the electric field at d s c .+mh*9hbqtj8va-a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of txm yn:sg e85n+he electric field at a distance of 1.50 m from a 50.0-nC 8ens5nxmg+ y: charge?

  A 5.0-C charge is 10 m from a small test charge. Wzzl(bn,e1d6 zoj+j- zhat is the magnitude of the electric field at the location of the test ch1 z-ez,oj 6dn(+jlzbzarge?

  A 5.0-C charge is 10 m from a small t7zyx2e.8uvdbg :y e4vp t,a/o est charge. What is the direction of the electriuoa4:7.t zb8 pdy/2vexgv,y ec field?

  A 5.0-C charge is 10 m from a small .)vtmjgjr :w.test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tm:.g.w jjvt) rest charge?

  Two point charges each have a value of 3.0 C and are separated by v ya7 65co*/ t:dpeios0 +hm(jfn cfe(.e7zlia distance of 4.0 m. What is the electric field at a point midway between the two c(ye:6c/0 vhonf7mi*s.p5ila zo+ j7( fte edcharges?

  A 5.0-mC charge is placed at the t urujp08;ct0ggpgmb;j u ,t5vvj,0- 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.,utujr p0cj805m;jv,g-;bt 0t pvggu What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm jrbi8zf.1xc : mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lfz:ib cj8rx.1ine 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 = 0.1,5mn kl b5 z6wj7ipln20 m. What is the magnitude of the electric field at the point mid1 7 m,lpw5 l6bik5nzjnway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l ljdc xf7i31,(v +8qzokldjn9 ast corner is occupied by a -3.0 mC charge. Finvk7d cf3+ xzq9lildj 1( o8n,jd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. ,k /hr;vd0eht 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. e ht,;dk0hvr/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 electsoy l6yv(-pl 7ric field. What is the magnitude of (6 yol s7l-vypthis electric field?

  A particle with a charge of 01 lxon-tz 1xfsk-pa: j+qul)4.0 mC 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 po2nxgasxwh0e dp1 08(d)o.qc j.ez a3l*ay.blaced in an electric field of 6000 N/C pointing downward. What chargow n8. 1.sa)0 xgcp0o3hjxyzab(e qe* dd.la2 e must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is place,jl)y6 y6fi byd inside a uniform electric field, and is suspended against the force of gravity. b ,iyy j)yl66f 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 is the9np as4x9ma5 mq+r ufzbci:9) magnitude of the elect5 ma :+b4 r9sxc)unm9a zifq9pric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCq k(+bcsnv( 1(7 as+5hmk bphc. What is the electric field 6.07(+k smch5c 1k(bb v+(ashnpq cm from the center of the sphere?