State the law of conservation of electric cha(rfya mw*p+i) rge.

  Is it possible for two negative charges to attract eachc /98 88xw(x7(eamkioc:dfszkzeq 6m other?

  Is it possible for a positive and a negative charge to attr uyk - sw.,yvrx1l i,jm/h/ll9act each other?

  A glass rod is rubbed with a piece of silk. Du coflnp j-md(; )txu611haun,ring the process the glass rod acquires a positive charge dn-)1uj lxo ;1 amuhfc(n6pt, and the silk

  A proton carries a

  The model of the atom shownnd2i9r71fc mp8so7a s a

  A neutral atom always h qv fy6b2.ukx9hjb (;jas

  An atom has more electrons than protons. s8(84)e bisz sxvgz5p The atom is

  Materials in which the electronsckas2 . cyugyw62z9 s: are bound very tightly to the nuclei are referred ugca 9c6sw2:y k2s.yzto as

  Materials in which the electrons are bound very lo0 i cgmd08dk+at95kvq osely to the nuclei and can move about freely within t+dc00igaq kt5d vk m98he material are referred to as

  A negatively charged rod is br01cfb6j1ums /7lmcw f ought near one end of an uncharged metal bar. The end of the flmmc7ub 6fc 0s/j1w1metal bar farthest from the charged rod will be charged

  Sphere A carries a net u+e urrj e7derby;406),a htuqn70wk positive charge, and sphere B is neutral. They are placed near each other on an insulated ta4te7 uend e 0urua0 ky7h+j,bw6r)q r;ble. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?bked- 77(jmf t

  An originally neutral e1/;xx-v wrpu qlectroscope is briefly touched with a positively charged glass rod. The electroscopvr-w1 px/;qu xe

  An originally neutral 6yh *)zq9o7n3c 7dioeqp h4reelectroscope is grounded briefly while a positively chargedrqy p4*de3h7oihe 9)co7nz q6 glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neumla+ ky-a,wol:nhs q3t172ou tral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but lna7m,-ha2+klot uo13wq:s ydoes not touch it. What happens to the leaves?

  A large negatively charged object is place 5syh:8 ;qln2dru( tttd on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball r8t5t2q(d;t :s hurnlyolls 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 o.j -fh om7yj3kf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsr j elw.by9t6/e/pyb5t charge is larger in magnitude than the styw65elpjye.b9b / r/econd charge.

  Sphere A carries a net charge and sphere B is neutral. They are 77/rngz9a(coc4h;k p-mam xn placed near each other on an insulated table. Which statement best describes tgnm x9 4oh a/r; 7cnc(z-ap7kmhe electrostatic force between them?

  Two charged objects attract each on+i fag wq84 wq+h, zhc(qf9yhm-aw qb+u*1 t4ther with a certain force. If the charges on both obwif9ftw4acq na qh-mu+h*,w 1+y8+4 bh g(zqqjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual w 4unji/ s*i3eattractive forces of F on each other. If the charges are separated by a distance of d/3, what are the nwnij*u se 4i3/ew mutual forces?

  Two charged objects attract each other with a force F. What happens to th.v6/usc v 4y(t9t+c-ofzt q zz iqau*+e force between 6 zu* s qu (+cv-at4+/z zvfq.ctoiyt9them 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 pr nhh 4bwid5x 2ku4wr0q)m q1/roton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a seui)4 x/q4mwnbw50r1 kr dqhh 2cond electron is placed next to the first electron?

  An electron and a proton are separated by a dist65bhh r,you0y yzj y3+ance of 1.0 m. What happens to the magnitude of the force on the first electron iryyu0b jo3 yy h5zh+,6f a second electron is placed next to the proton?

  An electron and a proton are separ2mgo)bpcey2 5.cm u- vee(w (jated by a distance of 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 p2cyeob-p(e)g(.2euvmm j cw5roton?

  A point charge of +Q is placed at the ho9fy 6mc am3 mpcxz95,c.v5e 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, identicohcaf5z5p mm99 v 3m.ye6x,ccal 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 the centroid of an equikehxik7s )/ w39 z8pixlateral triangle. When a second charge o k 3psk)7ix9wie zx/h8f +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 vec0 zr2o *sbbl.hlcz6p, tor?

  At twice the distance from a point charge, the strength of th6 )coxhc5:zptwkau 2 *e electric field

  Is it possible to have a zero electric field value between a negative and po:oy3 a6myk:ei sitive charge along the line joining the two charges?i6y:m y:ka3 eo

  Is it possible to have a zero electric fie5od6 5r8q6 +laxeggjkld value between two positive charges along the lineko jxr8l5 qa+e66gd5g joining the two charges?

  Electric field lines near psitive pok 5f.lgfq kpeh 15/zl/int charges

  The electric field shkkh,t+-adf6 l own

  Can electric field lines intersect i+ (l1+,g 3r )yqnzukzhudd+r on free space?

  A solid block of metal in electrostatic equilibrium is placedm;i 14sq qa.viy(2qolf wh 1sn*/eqc;(fpmb- in a uniform electric field. Give a statement concerning the electric field ina4i p f;lsf- 2(*sv1oqb.w(nhyqq;cmq1 /ei m the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are+rr74 pzk1m ;/ra //rvmrqwf* mdzah: each given the same charge, the electric field (E) midway 7ma w*hf4zr1zkr+:;mprq rm//a rv/dbetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a( lk .bclw0o4g bz+;za region where a uniform electric field illb owzz4 (.agb+c 0;ks directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anjv6 stx)a0se * electric charge

  A positive point charge is enclosed in a hollow metallic sphere that 9p )y jaqyz h*+(o-drpu;vg h1is grounded. As compared to the case without the hollow sphere,+;pjov 1 hquaypg* z-9 d)hr(y the electric field at a point directly above the hollow sphere has

State three properties of conductors in6-ut- (k.dr n dadn:dt static equilibrium.

State Gauss's law.

  The charge carried by one electron iolx1ml m8qd 7*s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +euo n3y7xitep/k, 62 l2.00 mC. How many more protons than electrons does yx2/ p,6oieu73klne t this piece of plastic have?

  What is the charge on 1 kg 9 u4uevjqh29. llb xe8of protons?

  An atomic nucleus has a c: qvb -)zf q;jj(o+c8( jaof9g/oivgxharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1d f w a) +yyrt873fg7fiuvg a-mg.7(km.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnit+m yv-8tuaffgwm7 7.g3i)krf y(gd7aude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the f j4;)utylr u7vorce between them is 1.0 N. What is the magnitu jrv u7)4;lytude of the second charge?

  Two 1.0-C charges have a force b8z ufh9/:mimlh/ adx- etween them of 1.0 N. How far apart are they?

  The force between a + k nlc4ov2b-mp+frmax )/l8m$30 \; mC$ 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 1.0-N force. If thd*niih8 ix* 9jey are moved to a new separation of 8.0 cm, what is the electric id x *hij9n*8iforce between them?

  Three identical point charges of euwp.0y/,c0 t*haf jx 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third isae.u* hf 0wjp0,cx t/y 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 fiqn,89ti9kd . 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 a9 i8fidq 9ntk,nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follobt;8phu toxw0 t6d p8+wing 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 m. What is the magnitude of the force;tp8 utwd0+x o 8htp6b on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, a sejjo6-8gk8d qmnb.zxlc/6 :nd 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 charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q i6e 6bg8mlj.-nz:qj/d c8os xks 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 = 5.0 nC is a:ffu * k8z5bus8hfd*o t (0, 0). What is the magnitude of the nkf*8zhufsbuf :*d8 o 5et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5idgu107pen- nrub u-3.0 nC is at (0, 0). What is tb unn 1dpg- -e0uru7i3he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl ld+*)lnve5f qaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the llvfq 5+e*dn )charges?

  Consider point charges of +Q and +4Q, which are separatedx f1d.hxh+ 2vmv cbu-/ by 3.0 m. At what point, /.+1 uhxbdm f2xvhv-con 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 charge is at x =b14 pjhlm )os y9gjcb-* vy.7z 4.0 m. Where on themoyy- h9)jpjgb b*s7 14lcv.z x-axis 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 placefl g083d a/t.cr.dknoii rt 59d at x = 2a. Where can a third positive charge +q be placed so that the force dd rli05iktogr3.9t nfc.8 a/on it is zero?

  A copper penny has a mass of 3.0 g. A total o x(z4/xamu) z6bcf.tl f $4.0 \times 10^{12} \; electrons$ 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 ;9 qdhfx5vc1 ean.i, rof a fixed proton some distance above it.cad f95v1 ri,h;xq.en How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comd gpn6o0u2;bz7.zt s pmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thruop6dz z0 gptb7s 2.n;eads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What i1r5bc by+okac 2nl v;h3t0 ,mms the magnitude of the electric field at a distance of 1.0 m from mcv25+ykb,3amt1h; o rbn0 clthe nucleus?

  What are the magnitudefu0j bw1o7u7uditv zq: ep638 and direction of the electric field at a distance of 1.50 m w 8dvue 3jui:1qz 7pu076boftfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofileh/p9t3 i/c the elect/ /3l heiicpt9ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a smalqf mh0+ 2-d2)y:sczboc5b ar.xw)lmol test charge. What is the direction of the electric 5cq2) rcd0 m o.h+ a2zl)sfb-om wx:ybfield?

  A 5.0-C charge is 10 m from a small test charge. Wha: 76 dr)nto-rk vk*i:in.irumjq 53hmt is the magnitude of the force experienced by a 1.0 nC charge placed at the location o:7 vru3itkioi) rd5nq6mj * h-m.k:rnf the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance3+6 nb6ghh / bd aaqjui:sylmhq5p(r 6v,kq( ( of 4.0 m. What is the electric3(q 6,y5nvas(d gqbpl+(a6khr/bmui6 qh jh: field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a memvv1/ 4 vhqoq:4l puh: 9dcb5iter stick and a -4.0 mC charge is placed at the 50 cm mark. What is t9vhc:dq5h qmviopb 4v4/l1 : uhe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0bs c gkx.g : nev0*rp3k5v.0xf cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningvkg.e3.bxv kp:r * 5s00fgncx the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed a8azcp vhh2mj9+;u0hj t x = 0 and x = 0.20 m. What is the magnitude of the electric field atah8;c9h huj02v+ m pjz the point midway between them?

  Three 3.0 mC chargesovwh+w+ik gefcv*wfg0 *1, )z are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field * fv wkw+z)cf*ge g,w0hvi1+oat the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c6flnb 6f,tx1 bfjdo 93orners of the bx dl t9jff3bo66f1n,square 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 swr 9xw0t;xnh. px n/+3n) yoeon a charge of 5.0 mC when it is placed in a uniform electric field. What is th 9)sn;wehyop/3 xnx x0r.+twne magnitude of this electric field?

  A particle with a charge of 4.0 mC has a/ 2zn wyuax-c20+3xa)w u8mgodj6bna 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 fiateo4p x u/2.keld of 6000 N/C pointing downward. What charge mut 4u.a/oekpx 2st 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 placeu 0oicazw;ak j7ld0-o , ka8:hd inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the e;d: 0 uia -aljkc,h oo0w87zaklectric field?

  A metal sphere of radiuq)dnsoo8uk5+q7y1; 1j wyowpyy 5v+k g;rj:cs 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric fieldgy87k1q5r jop d; 1sv+:)q+oyc;k uyo w5nywj 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t98a+fh* ake oszmp.kr8w9:h che electric field 6.0 cm from the center ork9mh ha wf +cpe s*:8z8ka9.of the sphere?