State the law of conservation of electric chargzozixi2 . (n lcqevj6xd9;53 de.

  Is it possible for two negatiii ,lz(jn x1t(mq +3dzve charges to attract each other?

  Is it possible for a positive and a negative charge to attra,6c (9bytlce:pipqf0ct each other?

  A glass rod is rubbed with a piece of silk. Duringygxf*:guin+twgm9 9( the process the glass rod acquires i9 9*fgg+(ynuw mg:tx a positive charge and the silk

  A proton carries a

  The model of the atom shows 8jc .jz wj *0mq9zc-iaa

  A neutral atom always haf4kps/s6v, xpquo45 g 6p9jtx s

  An atom has more electronsuca;,zv,seyq()55(r2xkc0 wy lz t5kli.z bt than protons. The atom is

  Materials in which thel.iyf s4f//wb85olw nw,h lf ) electrons are bound very tightly to the nuclei are referred to as5,yf wwsw i8 lln/fb/. hf)4ol

  Materials in which the electrons are bound very lo a(gyl.1ph)e gntj78hosely to the nuclei and can move ab h7(hgyge8lpjna 1. t)out freely within the material are referred to as

  A negatively charged rod is brought near one end of an on,z l fq1w5q0uncharged metal bar. The end of the metal bar farthes5fzw loq,n 01qt from the charged rod will be charged

  Sphere A carries a net positive charge, and spheo rb0az imu/kc7dz40qru:.d 9 i0zfd*re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded.0fd 70ra 0zm4 iib :dqc*du9/.rzkuzo Which statement is correct?

  How can a negatively charged rod charge an electroscope positivetn o7xvv2sl-0fb x0 zv.-4fsgly?

  An originally neutral electroscope is briefly touched with a positively charge)uw; n4rm kz 5-wkwr:xd glwnm)-ru ;5 4zxw :wrkkass rod. The electroscope

  An originally neutral electroscope is grounded briefly whiln pnt m i7i52r/guw*:ae a positively charge :2 u7/it mnnri*pgwa5d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separanqcmzdpc*,bf6 )uq90*l l 6e xte. Then a negative object is brought near the electroscecc 9qp*d )*,nzq xu6b0f6mll ope, but does not touch it. What happens to the leaves?

  A large negatively charg-esab2bef f /.klek 6t :1tok4krs7,ged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A secondf- srbbkekf2ee/ s4g tl61.o,at7k k: 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 xwh2zd5blv9h-k9 sa y y 907oyCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are3.zwr f( 5n+fb(k axba separated by a distance d. The first charge is larger in magnitude than thbr3( a f+nkx5b (.afzwe second charge.

  Sphere A carries a net charge and sphere B is neutralb(a7 d3-hu3r;qqoz jl. They are placed near each other on anu3- (h q3b7drq z;loja insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attraj3 .2m.goojg*o* /yav8qnjs;tyjk : m ct each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwe /: mgonqj;a8*yv jjt k*yg.ojs.32omen them

  Two charges are separated by a6al(:jl7iiz r 8f e-iu 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 new mutualzij:ai -uier (8ll7f6 forces?

  Two charged objects attract each other with a force F. What hib;s/u 9p9sfa)0ir*dbbbi4y appens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bi9fi*/y aub4d0)sbpi s;bb 9 retween 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. What hap k7zl5kl 9rgkpr) l:d/pens to the mklk ld : p/r9lz)rk7g5agnitude of the force 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 1.0a 2im8+ u4/x0jozslq9b .s 1d; dnbyif m. What happens to the magnitude of the force on the first electron if a second electron is placed next ty+ 1 dli/z9.bfn;40axsjou s8m2 bidqo the proton?

  An electron and a proton are separae3e ;pi t7xe7l1o1 cested by a distance of 1.0 m. What happens to the size of the force on the proton if the elee7pes1i ot ;17e lc3exctron is moved 0.50 m closer to the proton?

  A point charge of +Q1f0pne go cn80 is 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 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 e0ncgp8 1ofn0 of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is place56g .i4he7jo p;br-yo eil thrc+* :wod at the centroid of an equilateral triangle. When a second charge of +Q is placed at one oo*y-lhhp+g6bi: 54eji.re o rt w;c7of 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-*m jx9na m,h veh0v9x not a vector?

  At twice the distance from a point chax 1(m37i jkdw n5j:8 :d:(2p rptboggx+itehdrge, the strength of the electric field

  Is it possible to have a j(pn q q1-w.euzero electric field value between a negative and positive charge along the line joining the two chargesqju pq1 enw(-.?

  Is it possible to have a zero electric field ei1*f9. ohj3ie a0u;f5rm x qlvalue between two positive charges a.*i0fem ;q3 flx1h aojiure59long the line joining the two charges?

  Electric field lines near psitive point ch qg aep t1;95lu c ;re(mfod9sn.ha,0rarges

  The electric field showngys /4ole:n)hem,l) a

  Can electric field lines intersect in freb+ghgg5p v /w6v9 (m;iw emc(te space?

  A solid block of metal in electrostatic equili2 t.l83vc/lv ogi-csfqg hm,4brium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interio4gmf l- lv3/i.,2q8schtvogcr.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eahd,mop/d xj5 -zmhq0o wa7b 3(ch given the same charge, the electric field (E) midway bep(a07j qdwzh-o mbhm/x d35, otween the center and the surface is

  A cubic block of aluminum rests on a woowum+f e8g6 tgtuc8l:7den table in a region where a uniform electric field is directed straightug7 gm8 tlwuf6: 8tce+ upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near q77r l g /5esczqwwzf xiql6ex.1z)+dd97q 5jan electric charge

  A positive point charge is enclosed in a hollo;+nipfl fg *19usp k*k-zfe v+w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a p-k+pnvp; szfif*elu9 f g1*+koint directly above the hollow sphere has

State three properties of conductors in ue8o nn-:lj4tstatic equilibrium.

State Gauss's law.

  The charge carried by one electrony8f2jbol m;*cp 2o/ l7uy8ioe 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. Howkr8fj oi( +h7ehlg+ *da*jn2l many more protons than electrons does this piec8il2f*+rkl(h +j dgjhe 7 *anoe of plastic have?

  What is the charge on 1 kg of protont ja.tranozg b ,+(l1cz2n)(:*/syjlxdkg z 3s?

  An atomic nucleus has a cqhtq;zo4-2 krlz5h j2harge 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 cht;uvhj*z wuy( p(9yx 2arge values of 2.0 and -4.0 mC, respectively. What is the magnitude w((xhpuy zyt9v ;2*ujof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tllse-8jp 9z;tjgcf4,q ic.3us;/ ij.. obeijhem is 1.0 N. What bpe/e,ctij ;.q g is ;j jli98.3lz-uf4jc.osis the magnitude of the second charge?

  Two 1.0-C charges have a force between thenlor 9- jz4,rmakg+c4.i3lb v ,k1 wzrm of 1.0 N. How far apart are they?

  The force between a .po9h-hpz:q; y sj rp6$30 \; mC$ 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 v+ jso4/b;qokcb f( (vthey are moved to a new separatio;vocq/b(4vb( fjo s +kn of 8.0 cm, what is the electric force between them?

  Three identical point ch q-hswfw wpsq--m 76x,arges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at xswp-6 qhs 7-f- mqwx,w = 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 arfx;icap c48h c5blhxa* l4s*(e 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 maga xcsll*ha;cp*c bf(48 ix54hnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions:t:q( u10 p1hykdiev5g Q1 = 2.00 mC at x = 1.00 m1yqpet 0dik5:u(v1g h; Q2 = 3.00 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 square, and a seaidql/;h s3k1 cond 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 pos/3s1k ; hlidaqitive 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 (:h,e w o*syw0s0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What issy :ow*0s w,he 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 at (0, 0.10 m); Q3z*/. uuo1 gwysxozo8; = 5.0 nC is at (0, 0). What is the direction of the net force on u.w1 og8xozsy*ouz ;/ the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed ateb66d6 0 vqba w:/oyhy the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fo0 vh6qbd6e 6:oya /wbyrce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At mbtr x+o:j2h3what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actin+ xb3ro:2tmhj g on it would be zero?

  A +3.0-C charge is at the origin and a9wx0; e,/yxrx2 xu:w5kyfzv a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be paw xfy0/u,;xk rxe w5:yz 9x2vlaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2aa5 /:u5 w ukdvv,soqe4. Where can a third positive charge +q be placed so that the force u 5dvq/wavu,oks54:e on it is zero?

  A copper penny has a mass of 3.0 23+7 vdf) (4n rvuelmk1wvjqgg. 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 tp,4f(uyb /e.f 59yflel 9mv vagainst the force of gravity by the attraction of a fixed proton some distan(94/y.v l9 yevuf ,5mbetfplfce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncoy2mqw)) pg w:tnducting threads which are 30 cm long. Both are given identical charges, and t w)pwy tgq2m:)he 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 magnituqsa-ws *bwo0,e/idt: de of the electric field at a w qsw/ :odas,ie*t-0bdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distan hsqnu3k,8o7d)ro,t 4sz g1 aviipb9tk;di6;ce of 1.50 m from a 50.0-nC char,ub,ri6qk ids3h ipn t t8g49do);1 s7avokz;ge?

  A 5.0-C charge is 10 m frob ywrw io;ej (ky5rr4k0++gdno/7*e lm a small test charge. What is the magnitude of the electri0 yrw+yg5r we *;d/or(7nj kib4lkeo+ c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. W9ixe* l.vy,skglfq7 qt-(np -hat is the direction of the electrieqq s 9v7 nllt-k(pif.g ,*y-xc field?

  A 5.0-C charge is 10 m from a small test cwpy,fky;pu ci2-my vjfn-1:e2*eq t-3n-i poharge. What is the magnitude of the force experienced by a 1.0 nC charge placedykf2 p,ec-w m3*n:upty1 vjii-;p2n-fyoq -e at the location of the test charge?

  Two point charges each have a value kx syf.wdh l3oealbdup o2 3 2f4e-02*of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwaylesde*-pho2yda32kf uof4 .3 l02 wbx between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick2/2nqgi tu2m(j1*lldqb3nix and a -4.0 mC charge is placed l(2u m ng32l*bqtnd2qj/1ixi at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a*wy 1s zpn*pl.ncm:,p ou10wu meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whatcpz,wpp*muw0 y:lu o.nns11 * 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 placed ss 2c-cn 7khklp .7)*a jnu3pvat x = 0 and x = 0.20 m. What is the magnitude of h vl37c s-pk)7sk2p*u. ajncnthe electric field at the point midway between them?

  Three 3.0 mC charges arekm.g1)xa pm7vmeu6 5j at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. F)5 v .m7pkg xje6m1muaind 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 corner8v yx.hq2j) tv8g ,kih+djm4rxm,1vjs of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1,2 h)v.mk4xyj+dvh ,r tvgm8jx 8i 1jq, 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 ,syyxa6 )rh b6when it is placed in a uniform electric field.yhs6a,6y)bxr What is the magnitude of this electric field?

  A particle with a charge of 4.0 g(h8hp9x pz,**z,ezfh 2w ij emC 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 electt5c86k l /8riqluny k-ric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b/ll58cuy -ntqk6ri8k e suspended?

  A foam ball of mass 0.150 g carries a charge of7 1pw dv j-bp0kr15al(3rf9xb g xgw9v -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the mav31bpfd9vlwwrbpr xg97 1(5 kx -0agjgnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i xlwtgurd*7l8 8-p 7wjs the magnitude of the electrg7jwpt8r*7 xu-l ldw 8ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm ca dfsa 6ei8+m87h6vh gihu 5u;urries a charge of 3.0 mC. What is the electric field 6.0 7u6 u f8sei+am5g;d6uv8h hhi cm from the center of the sphere?