State the law of conservation of elec:+ndq w)fm b1 f 14q;lsoo4zrqa:v.entric charge.

  Is it possible for two negative chargeswsfq2ds3: a j1cpx0ef.t u;2w to attract each other?

  Is it possible for a positive and a negative charge to attract tt 8ry (jr/:(;jushu oeach other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acrws 5z91j9t9pcjkf h) quires a positiv p)9 9rscfz5wt hjj19ke charge and the silk

  A proton carries a

  The model of the atom6*i+rsogvia 5o o m+4ac+ndmr5o* w s5 shows a

  A neutral atom always hasp796kh .u/sds1 nbg ta

  An atom has more electrons than protons. The2rceyz o5 0ca)v7(mj9uu; b sm atom is

  Materials in which the electrons are bpyq9dr p6yd : ,ajwmhvn4+67hound very tightly to the nuclei are referrnvq67hy49awd m6r j, :p dyhp+ed to as

  Materials in which the electrons are bound very loosely to the nuclei and can ne4sm ;6t6rklko(o.r move about freely within the materialter6;orl6n. mk (kso4 are referred to as

  A negatively charged rod is brought near one end of an unchargmz co/k(.aty* ed metal bar. The end of the metal bar farty*/(a k czmot.hest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B cw , 9ws/2kfgwis neutral. They are placed near each other on an insulated table. Sphere B isf,9ckww2 / gws briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc +2jhu8kp fzj3ope positively?

  An originally neutral electroscope is briefly touched with a positively ch,pw*s97 jqoofn j ,gyh: ur6, 2hh.haxarged glass rod. The ehunooyg :q,h jxf,*6.9jrhp2ah w,s7lectroscope

  An originally neutral electroscope is grounded briefly while aj2g(yv m f9y)7govc9m positively charged glass rod is held near it. Aft9y27 gm9vyv j(fo gmc)er the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, an ,4(wp1qd ghdju -90nmrqv;hed the leaves separate. Then a negative object is brought near themuv0g ,w dphr;n(1ej9 4d-qhq electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ti5 u(f*zez vtnyq 4.4gable. A neutral metallic ball rolls straight toward 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 thfq .*(v4et5zi z guy4ne 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 2 a l-o3bj)7h9mdqwsf constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f)ie3;yo :ujlnix zb -*b r6:fyirst charge is larger in magnity en3 foyu*b:l )r-i: xij;zb6ude than the second charge.

  Sphere A carries a n, u 9 mlsd9vsqipb,nc cgz)-74et charge and sphere B is neutral. They are placed near each other on an4g9 sdzcml b)9v7cu,iq- p, ns insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. jrr+ikh,:6;:qg: gk,pmy 1 g n 0truyeIf the charges on both objhn kepgur:irgr1:,g 6,tyj:0kqm+; y ects are doubled with no change in separation, the force between them

  Two charges are separ;uelh4r xev ,uo.zc 8j6efm s13m65izated by 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 vzl5mre u 6iu me48jc;f6,h3sxe 1o. zare the new mutual forces?

  Two charged objects attract each othercn,q,fcjx dq9 lq 3u:* with a force F. What happens to the force between them if one charge is doubled, thenuxq3d:l9* f,cqq j, c 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:ef3 9mey o3wt kp)ilmwj -:c2. What happens to the magnitude of the force on the prmw: fco9i3 wjt-k:ep 2)e y3mloton 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. qq4go5b5x(f wje59vtfq 9op 0 What happens to the magnitude of the force on the first electron if a second electron is placed next to the q5wqj(g f40fq 5po9etx vb9o5 proton?

  An electron and a proton are separated by a dis9v/ovy 1 kv)lupxj0g(tance of 1.0 m. What happens to the size yu9(1pv )x o0v/g klvjof the force 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+bimiw. v t1i)r- xui8 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, identii8) imx+vubr1wiit- .cal 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 placed at thexq)zrzg,9 htg pt* 1 +/c-jdao centroid of an equilateral triangle. When a sr-,jq1 c/+ta)xto9ph*dzgz gecond 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 to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a x dl lqu(p+,ia)7k5:8jslhyju qb7d. cye 7u:vector?

  At twice the distance from +k hns wus0s+)a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between dre(g )/g)upo a negative and positive charge along the line joini rgg)p od/)ue(ng the two charges?

  Is it possible to have a zero electric fiel fs 8i8k4gnm.td value between two positive charges along tigmn4 88ks tf.he line joining the two charges?

  Electric field lines near psitive. mz)skkxqj:z3p(rv, point charges

  The electric field shown y 5a5ztoicpx wy985;zsq-m. u

  Can electric field lines intersec .jl cb*tlz cf n0/*bd1wh9.iot in free space?

  A solid block of metal in elcjpf 4rcud3v-u8 *.fz ectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the elecv .fucrcp83 u*df-4z jtric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 8g 3cl:i*3fttt;p;qla ,hadxgiven the same charge, the electric field (E) midway between thelat q8 h;, :lftg*pta3dixc3; center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wb p:nu7bcf/em:;oh7tzg;v n j9si4v -here a uniform electric field is directed straight upward. What can be shvzjn ebgp7 :mc:iu-49 7;vnb /o;stfaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric 5rt:9b 7ksh6 c8zpqw rcharge

  A positive point charge is enclosed in a hollow c8kzo4 pw 5e pab83h5cmetallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poinc a5k8e pwh3c o5p48zbt directly above the hollow sphere has

State three properties of conductors in st bh d *dhb(c6;cbz9vc7/mf3el atic equilibrium.

State Gauss's law.

  The charge carried by one elect y 5bcw dvv7x+r)gg93lron 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 manyft2ye;dkc 20e,gf) m m more protons than electrons does this piece of plastic have?;k0gcy 2dm) 2ff,meet

  What is the charge on 1 kg obnzrl3 imen9ji b:(05f protons?

  An atomic nucleus has a charp*xmjk oh e sv) 9qo/u4ho i0birv+628ge 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, have5pxt(lq;wg- ,7f .by0 r0t4 rmvclcnu charge values of 2.0 and -4.0 mC, respectiv rfrly5l t0b-w ng(m;p 4v07qcutc x,.ely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themjm*)q*hd2gh v is 1.0 N. d2jvh * m)ghq* What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?uh0viwd43epjkw zw3h61 v, .u

  The force between a xjv(i0c7b6oogs(lf 6j t+8x p$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 11z(48g.m ttv (nu3fm zdvtescm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm,m3e ( tufv.s1 14tg8vtz(mnzd what is the electric force between them?

  Three identical point charges of 2.0 mC are placed g-4jp 9fq cdt8).zdj v9ic/ nton 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 electrostatic force which acts oif9g jjz -8cdntv )cd94 t./pqn the charge at the origin?

  Three point charges +-:m;z x ubhcnt5to(dare placed on the x-axis. 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 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on nz+bt m;(tu-5 :hoxdcthe charge at the origin?

  Three point charges are located at the following positions: Q1 = r4td*.spq(2rh3m kz tvh, ;fw2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is tz(rhkd;t34 p rwh .2smft*q,vhe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the c/v- sriv8:y4/ w(yeg uxrm 9paenter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an eleyu/r49gsiaxr /(w-8yvv:pm ectrostatic 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 nC06vg npa5xwkvn0b90bcq w81 v is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnip bv10 nb00wxa vkw6q9c8g v5ntude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.98juvjktwf + 430 m, 0); 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 fukt+vjf 8w49j orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ( /8ruz +ubrcaequilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on a zu cr+ubr(/a8ny one of the charges?

  Consider point charges of +Q and +4Q, which q7blqzsg-0 +j5 o4q fcare separated by 3.0 m. At what point, on a line between the two charges, would it be possible to ploczg bq+-4 0js5f q7qlace 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.(lngl .w+lqz8/zlc u charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerolugl.n czq8 l/+zw(.l ?

  Charge +2q is placed at the orij 1,y*g-xda5:gilyy hgin and charge -q is placed at x = 2a. Where can a thyxg*y-:g alji 1, 5hdyird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. mnefhe,rs(e( yw d ;.7 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 at6 lu.6. jshf7jkgiwe (traction of a fixed proton some distance above it. How far above the elect7 k li6(hj 6guwfsj.e.ron is the proton?

  Two 0.20-g metal spheres ar u2ldr3 a:,sv9 zzg;oue hung from a common point by nonconducting threads whic 2szz93uorg v lu;,da:h 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 mb/r y7q/bdlo/i - imeo0q (hg8agnitude of the electric field at a distance of 1.0 mmr qilo(/ e/-b/bi07h8 qgod y from the nucleus?

  What are the magnitude and direction of t9kj )h m73ybqk yx.q n+m.gci)he electric field at a distance of 1.50 m from a 50.0-nC charg+x.)7njk ghyq) ym i93mc.qb ke?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the zd4kjp,b3- y2nrfo h ,electric field at the locationjf3d ,rp2h4 zokybn-, of the test charge?

  A 5.0-C charge is 10 m froj9 (86 c4rrd)+cxvjsjstn p9 om a small test charge. What is the direction of the electric fie (jr)s46vc n+jr dps ct9oj8x9ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituw po 0yt)ga gyj,v55fwz 1h pc3rkm-awq3,92hde of the force experienced by a 1.0 nC chargeqavy9g grjywhfz-5 wt) ,20h5a o3,mp3k1 p wc placed at the location of the test charge?

  Two point charges each have 53;;ht an3n d0hrb(ev hct:(lru*tv ra value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinr unr3hcv;(r:la(tbtv5d t3 eh n;*0ht midway between the two charges?

  A 5.0-mC charge is placed at the 0 ceist( 0a2lp0k:r-i + bw q,op, rto*iom mark of a meter stick and a -4.0 mC charge is placep* 20 soo,b,+ :tqi-e(or wip0k atrild at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thea)vdvaj //j-k 0 cm mark of a meter stick and a -4.0 mC charge is placed at thejad)/vvak j-/ 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are place-;r e+lqni3l dd at x = 0 and x = 0.20 m. What is ql;d3 +n-ielrthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three ch( mxd 0bbn4k:orners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cented4 bx0 :nmbhk(r of the square.

  Consider a square which is 1.0 m on a side zlrbk;fn;qxqpltp(u c6 y.n-- f: m;). 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); -3.0 -6nm trfqplq:y ;x;pfb. czulk) - ;n(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 iu9;xl qe7ybt 5s placed in a uniform electrictb7 xu9ely5;q field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a massnjnbtj6vmkwd c/ )+), 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 0.120eq,obka; *p) p vs.-xz g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for ibzkaepox-v*) p ;sq,.t to be suspended?

  A foam ball of mass 0.150 g carries a g,g-es7u vs-zg2qf(o qx7e0 r charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspendegv -oe,u xzeg-70g( 2fr7 qssqd against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radib4: 6 +rpiiviyus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfii46bp: y rv+iace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whi1y+*vcv 6 h sv+(eycvp o9/byat is the electric fielh y/*c iy6epcv( yo+vs 1b9vv+d 6.0 cm from the center of the sphere?