State the law of conservation of ecoxrc 9d4t )8wlectric charge.

  Is it possible for two negative charges to att8jyd/ rt ;z:ni 5ovug9ract each other?

  Is it possible for a positive k p ; (4*y delbvv.dau-i;bk9o3jtqj ;and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod aci/v.ldto q vs:v 33ea0lnt46 gquires a positiavgvte3t:lv sln .4 q/3oi6 0dve charge and the silk

  A proton carries a

  The model of the atom shouaq7 si 5.yzy yg w;;sn79hhz *86ahsnws a

  A neutral atom alwayc4tgr:w +h:ny)xr5 res has

  An atom has more electrons than protons. The atom -)g f fpohto,bdte74w6:3 c)qi x/a pjis

  Materials in which the electrons are bound very tighjp ewh9h/jznw r;* -n7tly to the nuclei are referredw -7 e hwhnn/pz;*j9rj to as

  Materials in which the electrons are bound very loosely to the1kux yg.jn90+cx0v1.gma:mdh pznm 5 nuclei and can move about freely within the material are referred to 1gdn1vm.gp50 zxym ajh0:.mnkxc9 u+as

  A negatively charged rod is brought near one enc,1pr(v) azrq*oeucog4iu xrp7 c0 (2d of an uncharged metal bar. Theo c(reo *p2rp4 ,vu0i )c cza7(g1xqru end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spheo+nl0ia 3.qvnwl-g yx 4f;2 wcre B is neutral. They are placen.a oc4 30wywn-q;2 g +vilfxld 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 anpnc5 t;w azz+ibf2uy1 t.t./g electroscope positively?

  An originally neutral electroscope is briefly touc8b bju n*ks .b*az19u wwj/ec(hed with a positively charged glass rbeab* zjbnu w 8k wj.c19u(/*sod. The electroscope

  An originally neutral elecwydy-f6nm/1 n troscope is grounded briefly while a positively charged1nnfy /dm -6wy glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thbrrkry :/ *fg(e leaves separate. Then a negatykf( r :r/gbr*ive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatea98k: t 1ipzhnd table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls a9tn8zp:1 ak hilong 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 p:.j3w3+ ojx iulbo84 5b7toczmrae,Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated ,jd+ciw4pm, qidl/ybwf 9 4r;by a distance d. The first charge is larger in magnitude than the sebj+lirmc/w i ,,4 dd;y49wfpqcond charge.

  Sphere A carries a net charge and sphere B is neutral. Tn7:pw8g(r8 whxxx 0h1gda4 4 bu ;ltuphey are placed near each other on an insulated t bwdxaur0htg 74w8 4hxx(;ug1 l8n p:pable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other kxs4,6:10cn 7 vgskqw,fpr b nwith a certain force. If the charges on both objects are doubled with no change in separationsn qvnfg 0wp:,s41 7brkc6k, x, the force between them

  Two charges are separated .ryg(y0 qcn)w9* mql qmf i.9pby a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the c0iqlw)m np9gy r(. .9m yq*qfnew mutual forces?

  Two charged objects attract each ) xpxpo jdfd57 q:;dr,other with a force F. What happens to the force between the7, xqxj5pdo dpd f);r:m 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. Whatr5g ,m,a vi h5zg3fhf7 happens to the magnitude of the force on the proton if a second electron is placed next to thef7mah5, hirzv35 ,gfg first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hakp4 znb a//jzjld/)rqn 1pu9)ppens to the magnitude of the force on the first elecj/rp1nuadqlj n9zbkz/4 )p/)tron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 x . lrqe v, /;ckh7y,.n*c8cnvjy6jp5w:iz cvm. What happens to the size of the force on the proton if.ccv y6ne7,lzx k v/.j;w y hc5piq8 rvcnj,:* the electron is moved 0.50 m closer to the proton?

  A point charge of +Q iu+wp6 lv84upj s placed 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 v+8 wj6p4upul 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 +Q4( fgsdrc (f0d is placed 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 ofgd((dcr f4s0f 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 5dy jd))db,:;rep 4oze7jx bfis not a vector?

  At twice the distance from:027f-gdd*q yk zsmfz a point charge, the strength of the electric field

  Is it possible to have w;h 4/q gzch2btcf 8jq):ewss. v:tv- a zero electric field value between a negative and positive charge along the lineg2 ;v-qbh):ez ts/q jsv4cf.8:t hcww joining the two charges?

  Is it possible to have a zero electric field value betwees cdj1rh 8-00oyk+tr : qgjyrar )y:h:n two positive charges al:q1 :)rr+orjsyd0g cyt8ykr-h : hja0ong the line joining the two charges?

  Electric field lines near psitive/73/hvy ,xxhoom 8byk point charges

  The electric field sho(q9go dl; ny4 -jkmi1kwn

  Can electric field lines intersect in freeasjzbux.:62o:nte3 w space?

  A solid block of metal in electrostatic equilibr5 e30zt1idsh0n u(e1 gmhrx,uium is placed in a uniform electric field. G,(umnxut0 reh1 05 e3z1shdigive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe bs3ka9yh:j p h.yuhl724ma k5re of equal diameters are each given the sh 9:kahsyb2 3p4kh5m au7jly.ame 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 where a uniformm 0rdrcgo(3 6h(gt/)iud uev0 electric field is directed straight upwr6drc(vgm3 o t gu)eu0 h/i(d0ard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electricerf9y 73sgs, 6y px0dc charge

  A positive point charge is enclosed in a hollow metallic sphere tg lw,ig g2d2:that is grounded. As compared to the case without the hollow sphere, the electric field at aw glig:2d2 ,gt point directly above the hollow sphere has

State three properties of conductors in (x)bv44.ixtdb) t*(5 haeflg dh6vk pstatic equilibrium.

State Gauss's law.

  The charge carried by one electron i m(w gn*tf16zil e+7*-dqb lr1l8 pl0n8erlnis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a nd 8: w:qphsv9. lw7opqet charge of +2.00 mC. How many more protons than electrons does this piece of p dqwwvp:q:8 l .sh9op7lastic have?

  What is the charge on 1 kgtcsjpv /5r90l of protons?

  An atomic nucleus has a cm;o n u+pq(o4w)y1qt m ba7u4pharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by*8/dt yoih)p d,: iye-fkhl6 l 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of theod:d6/,i efylykl)i hp8h* -t electric force between them?

  A 1.0-C charge is 15 m from a secon,a 7cckn:1 rmjd charge, and the force between them is 1.0 N. What is the magnitudejc7a kmr ,1c:n of the second charge?

  Two 1.0-C charges have a force between them4udnyrc e,qh4c+2 b. 9vscu/m of 1.0 N. How far apart are they?

  The force between a 8v aj-.bnh7n 2v-cx(xv9h jzg $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience *hb 2tx+fy)m6jz w+v n(ap1zg a 1.0-N force. If they are moved to a new separation of 8.0 cynz1z++gf *2 ahb)x (vjt6pw mm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 8a5 rw. 1mux 2vohiki(zit.6ux-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 electrostatic force which acts on the chargi5 x(tuvzma o2iur1 kiw8h. 6.e at the origin?

  Three point charges are placed on the x-axu 8 obdb4f8fl+k;pcq:is. 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 c8p;: bqfofd4+ bk8lu100 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 gn)bw,ch;0-k mrgo t; following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3. 0,ktg-b;w)n;rchomg 00 mC at x = 0; Q3 = -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 placed at the center of a squaremx whh 1g p.pzj:ya/:(, and a second 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 c (wmhjg:/1 hxyp. azp:harge 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 a wgbuop ,acvhv1oy) cx5(*z.4t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). (15z4gp.yoou w bhxc)vc,*va 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( z.f8,f4xupkcwg wx: = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on th8 :x4fxuc.kf( wpg zw,e 5.0 nC charge?

  Three identical charges of 3b7l5q 7xjbf -je2 1rbpog5g:b.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. W5o2bb71fxbr5jj bgg- el7pq :hat 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. skpz/tskko (l6e ,l6(0 m. At what point, on a line between the two charges, would it be possible to place a eszkl6p(, tkk6so( /lcharge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the j v.;c4yf,z oporigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed soz4,.pyj;fo v c the net force on it is zero?

  Charge +2q is placed at the ) pyzuh2w15i uoq/pk1origin and charge -q is placed at x = 2a. Where can a third positive charge +q zi )pyu1 pqwo2k5hu1/be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Ajt: e.r4,gg,tf fkm )e 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 gravi; h doyhk0wpvp76b .r1ty by the attraction of a fixed proton some distance above it. How far above the e7b6hk d01vr;w ppo.h ylectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting th2n4ge6w1rh6dz9 x+ .kmh i b c4b.wxrkreads which are 30 cm long. Both are given identical charges, and the electrostati+kb2ih.6r . xk1x 4h49m6ewcwnzbgd rc 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 charg96cb h;2w4vtf 95c ndfwcb iu -ycgik3hn9w*1e of +40e. What is the magnitude of the electric field at a distance of 1.0ucwcn23ft6wvk -dg ;h b4h* 5w1fi 9bi9nccy9 m from the nucleus?

  What are the magnitude and direction f :vl2lig6/nv of the electric field at a distance of 1.50 f vn6l/2:lvi gm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a kd3z77m f/jo 6pe qd5mpc( j(csmall test charge. What is the magnitude of the electric field at the m 5pk(e(c oc7fqdmjp6 d7/3jzlocation of the test charge?

  A 5.0-C charge is 10 m from a small test cha )ac,429evxj w 6jexacrge. What is the direction of the elec)w,9 jx cxajeev462ca tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magi cc7wa z;,pdo(4,jdh nitude of the force experienced by a dc;o pjzh i7dc4w ,(a,1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Ci; e5ev6bfxq+mj :p9u and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges5;f p6vb9ujmee:x+iq ?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCsi) (ny t(q5i.d1fyu+ie+e f ,w6s 9qscp*mlf charge is placed at the 50 cm mark. What is the electric field at the 30 cm marlst15imwp+f )eyiqf s *( ,d6.sqn ic+ey(u f9k?

  A 5.0-mC charge is placed at the 0 cm mark of a merj hs kh;pj(:s :wzz54ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the s w:hs4j;:( jkpz h5zrtwo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plku.y1a0- -8bwh f klkan,alc;aced at x = 0 and x = 0.20 m. What is tb ha;-fyalu a 1.w08c-k klkn,he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of;45 3ej utoou. m,xtdm a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cent, 3j;ut5oudm x4etm.o er of the square.

  Consider a square which is 1.0 m on i0r*7(c ne ehwa side. Charges are placed at the corners of the squarece0e(*r inw 7h 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 when it i.iet2 -e2my6qraxx 4b s placed in a uniform electric field. What is the magnitude of this2eq2xt airybxm4. 6-e electric field?

  A particle with a chargewzfj:od rg(5n:q gd66 of 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 i7io8 m6o/wttl 3ilg5ns placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to 3om6onl igl/t8tiw57 be suspended?

  A foam ball of mass 0.150 85l9t1vy 8vebhk*m :fhj -wfo g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force vyfv8b eh w8h* omk51jt:-f9lof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm.zp*bcg-;vjz: s t kv+ carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromkv c bvps *+:.jgzz;-t the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargwvq+ p-flq15c65es(u 2x d (rr/zf3 p f4swwtde of 3.0 mC. What is the electric field 6.0 cm from the center of the s-p/ cwer (pwsufqvq 2zwl463 s xf+fr d1(5d5tphere?