State the law of conservation of dd 3i udbqlal0;*+5 ujelectric charge.

  Is it possible for two negative8ckib un /x;j+ charges to attract each other?

  Is it possible for a positigau- +6/tykidy -*ynwve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glaj*b:zosxcgp2 4. cppv-p u,s8jl8pa 3ss rod acquires a pox-* cc as:3 ug ppv2 jl8p.bs8,opzpj4sitive charge and the silk

  A proton carries a

  The model of the ato0cso hyu12 -shm shows a

  A neutral atom alwayss8i+ttns o6r ;y:i c24i9fpgx has

  An atom has more electrons than rir 4-9dw;ojc9uf7 f mprotons. The atom is

  Materials in which the ezus t8f(2 f:pm,u/skckth- 1-wi+yx olectrons are bound very tightly to the nuclei are referreds1z+ux sk oc tkti-pfmhy2 8f-w ,(u/: to as

  Materials in which the electrons are bound very loosely to the yti;a1-uv l7k n(1fwf2is7ydnuclei and can move about freely withinyi21n 1ily-u d(7a ;7 tvfwfks the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Th, ibk(s 2e-crde end of the metal bar farthest from the charged rod wirk (,s2bid-e cll be charged

  Sphere A carries a net positive ch;g ).j +xtvc ic43 6ghjm9kcpgarge, 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 9.chtg 4m6pgj+xkv3 ;)icjgcgrounded. Which statement is correct?

  How can a negatively d8rhi d dh98;ocharged rod charge an electroscope positively?

  An originally neutral electroscope(q0iyn xpa ,kxh:( n5i is briefly touched with a positively charged glass rod. The electroscopqyian( i ,5hn(x0:pxke

  An originally neutral electroscope is grounded briefly while a positively chaol1qmw z8 f;cl/ ur+7prged glfzc qor7lp8u;w1+ l m/ass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thenkm3u6 zr g9s 86eusq2c a negativ6k2ssrmuqc3g9 u6e8 z e 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 insulated table. A nef88jdq3nl1 fzy0 - zedz:kyb,zdp bgb,83qc :utral metallic ball rolls straight toward the object, but sto0 z,8- 1:b:bpq jzzc gn,d3ebfzlyk8dy qd8f3ps 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 Coufwpg7+(jvg3b dz d5-qlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated x kkbz*y( 5c(zt:uf 1pby a distance d. The first charge is larger in magnitude than the second ck : tk*(f1ybczu5xp(zharge.

  Sphere A carries a net charge and spheyq, ,6(t1eatr ,sufdy biynfn*(.c 8ere B is neutral. They are placed near each other on an insulated table. ,fy, (e,s 816cbnt uqfyeadrt.yn( i*Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargen:bee vs9 2 nvc1t6okx;1tgs8 s on both objects are doubled with no change in separation, the force between ntv sk 9ntxc2s8 og1 eve;:16bthem

  Two charges are separated by a distanccdg.r2 2c hdt5 m-d8 sum+6lrdoteo2:e 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 new mutual force6ue tgrcl ocmt-2ds.2d5dr+d o2h 8:m s?

  Two charged objects attract each other with a force F. What happenua8oagc :tmis;6+ j-q s 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 force is nowtm-sigajq:a6 ;co8+ u equal to

  An electron and a proton are separated by a distance of 1.0 m. What happeujl3ju, ,c xg*ns to the magnitude of the for3gcxj,u*u jl,ce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What kwllqr(g13d1nq7x 8 f happens to the magnitude of the force on the firk8nwd qqr1gxl1f 3(l 7st electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance o/ xf v tc13-:9cf98clln9ha,rsxkc zkf 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pr:/-9 za ck,lf xv9knc9 htclxfs183rcoton?

  A point charge of +Q is placed 9li m.dnbn dy*5j0 t)ut;sj jqdm5;6 zat 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. Nojq;lj0d*z6.9dtm ;nuib jtd5 yns5 m)w, 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 i: 256tzow akwwvx 1/xps 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 of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due tkot5 z/w2v:w 6xxap 1wo a third charge of +Q placed at one of the other vertices?

  Which of the following is not e6axd/ c9. -rcz)* qamsntr3ha vector?

  At twice the distance from a point charge, the strength of the elechbu38w ,0vpuct); s 5zpxl:antric field

  Is it possible to have a zero electric field value between a neg208y o paswg3sative and positive charge a8ypwoa23 s s0glong the line joining the two charges?

  Is it possible to have a zero electric field value between two 42z:vyyr* y2qbcm f 0xhzc5)kwp8ez 7positive charges along the line joining th zxmw b0yqeh)24 rzc8kpc7 f:2vy 5zy*e two charges?

  Electric field lines nm;-j97 v .gq,h ;ovq ,kh27kqome tgigear psitive point charges

  The electric field shdeob3j*9aw)(h h+b rlown

  Can electric field lines intersect in free -jwh4-e .a clyspace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform;pmbt on*- +(m3x fokicf57od electric field. Give a statx-7t+mfo; knp cfobm*i(d53 oement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gid;ceg2/w 5pjkf/bkl; tmw.0 even the same charge, the electric field (E) midway between the cenc/5l/ ewgmkje0;kftpd b 2;.wter and the surface is

  A cubic block of aluminum rests on a woodk)ep )-7 z u:4cmkqtfn 9nwji4en table in a region where a uniform electric field is directed straight upward. W4c)-tz7 k)nfij:u qm9ke 4wpnhat can be said concerning the charge on the block's top surface?

  If a conductor is in electro gf8-qhwa wv9(static equilibrium near an electric charge

  A positive point charge is +ipt z )+fr a(1zbz 4rybfb7(qenclosed in a hollow metallic sphere that is grounded. As compared to the carb+r z z p bqyzf)7b+tf(14i(ase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilb -aophr:6)ji1aqyx 0vntr/(d y tr,8ibrium.

State Gauss's law.

  The charge carried by one electfybwsjq o+ nwlq8i 2, )7w*im8ron 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. Howw m:d4)3 mnyqdp,m h9x0ro0jo many more protons than electrons h:3myoojdd9qr) n4mw ,0mp x0does this piece of plastic have?

  What is the charge on 1 kg of ;ld r, b/k (q846b coympr+x.jue ck6oprotons?

  An atomic nucleus has a lc1qbd8pp,,j kt-5mxcharge 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 2.0 and -17dqw /p zs5h.hrlr -c:9pppc4.0 mC, respectively. What is the magnitude of the electric force betweenshr w -7p.c drlqzhpp:59cp1 / them?

  A 1.0-C charge is 15 m from a sebi1 mjv*jj9( g-1yozccond charge, and the force between them is 1.0 N. What is the maj*- v1ibg1zyo(cmjj 9 gnitude of the second charge?

  Two 1.0-C charges have a force between them m42w(rql af:c of 1.0 N. How far apart are they?

  The force between a uf-8.bq d2 u -6soqulp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c;2 pr*myu8v; m kzex.rm apart, experience a 1.0-N force. If they are moved to a new smu2k yrvm8rx;;z* . epeparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed sppv 5w ((o95yd er 7b;ulil6xon the x-axis. The first charge is at the origin, 55dlv 9(ybwl sex76(piu ;ropthe 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 of +2kz m omv7, kim.s(3s+n6ts j35izak8i.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. What are the magnitude and dizmik sojsimm6i 37.(sa+v nt zk,385 krection of the electrostatic force which acts on the charge at the origin?

  Three point charges ak5v1iuk r0/j84qs wgrre located 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 = -1.00 ms1w kkgu 048qvrr ij/5. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center oflj 6xw 9 gmj1ey-1puk) a square, and a second point charge of -Q is placed at the upper-left corner. It is observed1)ej6mgjlx-k y w91 up 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); Q3 =kgq nn+p s(dfm0e0lejk e +9sk).9c-e 5.0 nC is at (0, 0). What is s+sq99 )e dnp g.kc+lmj kfee(-00n kethe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); qy;yaim:b:n g ;8skm0zz ep2+ Q2 = -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 onap2bn zyem:zgs+q;k i8 :0m ;y the 5.0 nC charge?

  Three identical charges of 3.0 mC aredbwkg+r7s u7l+ o 2+mp placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitusrmw +o2+7kd+ ul bg7pde of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whpcajjyb-5qo2 0hu z/8ich are separated by 3.0 m. At what point, on ah8 jy0upz5 bqjoc2/a- line between the two charges, would it be 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 and a +9.0-C chas906vxk 9l kfurge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?0 us6k9flkxv9

  Charge +2q is placed at the origin and charge -q ii efkuuhnx39(l ,e (2cs placed at x = 2a. Where can a third positive charge +q be placedn 3l2kf i(x9h c,e(euu so that the force on it is zero?

  A copper penny has a7lh j ; rylvm3kl.tittmn:3 /4 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 againsta3 /k yogd),8gzpjzih()x+c x the force of gravity by the attraction of a fixed proton some czx xy(g/ hj az pk)3idgo)+8,distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commi)b orjw322r yon point by nonconducting threads whici j 2r)2roby3wh are 30 cm long. Both are given identical 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 elec0:n ,z tsoguzaho5-is5jn30ytric field at a distance of 1.0 m0js ot:y35z,0sui- nohg zna 5 from the nucleus?

  What are the magnitude0gt-6u3hgu58+suoitzlt pp , and direction of the electric field at a distance of 1.50 m from8+-,5tuhlts gopzp63 gu u i0t a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testj 9ow;0t k/w+g/gjmyw wrv5)u charge. What is the magnitude of the electric field at the location of the test charg/ +/0 owt)9;rwkjyvggmju ww 5e?

  A 5.0-C charge is 10 m from a small test t ii jdwsr42-s-:kl2x47yh wxcharge. What is the direction of the ex 2dy-tir -2:ww4hx7ikssjl 4 lectric field?

  A 5.0-C charge is 10 m from a small test charge. rr9bb,c,cwdc5h 57 ueWhat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test c 57hcr5,b9er uc, bcdwharge?

  Two point charges each have a value of 3.0 C and are ad*5g f(xlv6k separated by a distance of 4.0 m. What is the electric field at v( kdg*6lx5fa a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC t)nzi2u/ kgdg bn1 39ycharge is placed at the 50 cm mark. What is the electric field at the 30 cgzn 1dku /g3)iy2tb 9nm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charpvmw h0ywl,k4/ mdi0;j, u 4mmge is placed at the 50 cm mark. At what poinmwmw,u kd m,0jym;h440vi /plt on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7lo5g 2j,b:i gy.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point moyg25gbji l,:idway between them?

  Three 3.0 mC charges are at the three corners of a square oghxq osqa xk:gg/5z91z52f 2 hjxd 9,uf side 0.50 m. The last cor:2q5, 9/hxzg f 1zd5qhx ajukg og9s2xner 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 at the con d7ya1ywl-3yd 1du i(rners 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 ml(d7yw- ad 1iu13dy ynC 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 9lkv i trok)5+is placed in a uniform electric field. What is the magnitude of this elv9+l 5ik kr)toectric field?

  A particle with a charge of 4.0 mCt8q-e5 h1eahq 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 placed in an electric field of 6000 N/C vd5m ai ua8;l;h *e;tzpointing do 5d;;auheta;z v* il8mwnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 soba6 cf gy nvaty;1)jw/mx7- *zyf1+ g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspenv ) yybs+1*t6xoy/-f aang zjcf7wm1; ded 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 +2.0 mC. i s-lqv.o0i 4t n;lwl4fzf+ k+n-xhf1What is the magnitude of the electric field 5.0 cm from the sphere's suif10vhowk4 +s.q -xif t;l4 n-+lfnl zrface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCjx/a y(6pn1btpw;,t u. What is the electric fn6t 1p,w; (auxybp /jtield 6.0 cm from the center of the sphere?