State the law of conserva1 44s/khzs8ewr(,w kpe -v hjstion of electric charge.

  Is it possible for two negative charges to attract each other?cz7v9 7k b/iam

  Is it possible for a posru go2+6sz(v .yzkcth/ntn9r 28scp4itive and a negative charge to attract each other?

  A glass rod is rubbedx 6r9n wywor;3 with a piece of silk. During the process the glass rod acquires a positive charge 6nwro93w;x yrand the silk

  A proton carries a

  The model of the atom shows a/y-n( :l2 w9vmc6 )uslkh.engmy xu -x

  A neutral atom always hn: c40os coiavvqd01 )as

  An atom has more electrons than proton5q; --bua00 duox) o qa4wzpbis. The atom is

  Materials in which the electrons are bound very tightly to thojw)s0 o 8n qtrc6cbej+ ):beqtf/p0:e nuclei are referred t/0feo qe:cbpc)0)n qoj:j6trwb8 +sto as

  Materials in which the electrons are bound very loosely to thvc 1qdox szt( 581zxk8e nuclei and can move about freely within the matzqx8tdc8 zks5v o x11(erial are referred to as

  A negatively charged rod is brought near one end3 zo:6 juxxbz, of an uncharged metal bar. The en:z36zo,xjxb ud of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.30j q4fiw pl8w They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stateml w0iw43qfp8 jent is correct?

  How can a negatively charged rod charge an electroscope positi z*h5xxr83 xofpx :t5nvely?

  An originally neutral electroscope is briefly touched with a positively char zq7xj0yr 0mk+ged g7m x+zy0rjq 0klass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelr: d0 ;etiid;-n aqc+jqfuy9c z3y65ly charged glass rod is held near it. After the glassfla-un0c:3zjt 6i;e+5q9iyyc q;rdd rod is removed, the electroscope

  A positive object touches a neutral elecaee8o4h:6 t , dxsl,.h rcpe(ltroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not tou8e(o ltel:c.,reh,dxhp4 s 6ach it. What happens to the leaves?

  A large negatively charged object is placed)4 udw yoeis2* on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A secoe) d*iowys2u 4nd 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 Cou sc1j1 b+dxd a:hiy79olomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sc3u :ps/nih+qos.scg 7k we: pewt7k f4 )v6t2eparated by a distance d. The first charge is larger in magnic)s/kf67tp: 2t wvuc: e 7k+qsw4 3sphg.n ieotude than the second charge.

  Sphere A carries a net charge and spherj+exyy4/(n;9dg v :rgwyme*x e B is neutral. They are placed near each other on an insulated table. Wxyrgx4g ;m:n+/(wye*dy e9jv hich statement best describes the electrostatic force between them?

  Two charged objects attract each ot 1/x/k hqgbfhge:*2mi her with a certain force. If the charges on both objects arq1gi *h2/g ekxmh/f:be doubled with no change in separation, the force between them

  Two charges are separatedza i/3v3bwl-9hx*yej, r0z t k by a distance d and exert mutual attractive forces of F on each otw, 0iz-tae jxyh k *9v33/rzlbher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract cry+o a afq212 a1 emv-olr)m5each other with a force F. What happens to the force between them if one charge is doubled, +a-22)frm aloymov1r q5 a1ecthe 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. Wha0 f5 fhsm1sek5t happens to the magnitude of the force on thse k55f10h smfe 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 ha te jcw7cg/0*vppens to the magnitude oj/*g0c7ct e wvf the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hlr p-yu 09ymmkco3 57uappens to the size of the force on theloy3 0u9upyck m-75mr proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sec u1/tb 15g4t jg76,kqayk hbegond 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. Nowggbh6 ,k a7j q b/1tt514ueygk, 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 is placed at the centroid of an equilateral triangl6rds j0.ggjppo/ ie7+e. When a sp.ji0pe/s+g o gj7 rd6econd 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 followia u qcmf(t,z4(*vsv. png is not a vector?

  At twice the distance from 5; xaknm/)owa a point charge, the strength of the electric field

  Is it possible to have a zero ele2hnp8.+tc.qn-0iv e7gtyv3t*p zp y fctric field value between a negative and positive charge along the line joining the twqthze p3.t+28ynvgfcy0 -v *tn i pp.7o charges?

  Is it possible to have a zero electric field value between twdvhye )01bq+voc/f,g o positive charges along the line joining the two charges?+fvb 0yv c ,h1eo)/gdq

  Electric field lines near psitive point chargaw*)ie( 9qtr les

  The electric field sj8 h;t nd43qr6jyhs7w hown

  Can electric field lines intersect in n u-hh to7 abf5bgyq776l/.n 9 nf/dnv*6fefzfree space?

  A solid block of metal in electrostatic equilibrium is placl9 s2tyxxf57t :twf,mpyydv* ,7b+zned in a uniform electric field. Give a st5tpb9ff:vly +7z,*dntw2 syxx 7y ,mtatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi:l/ s4obv-1o y5ds)x sym-oo wven the same charge, the e5o sox/4:ywy- dv)1m-loosbs lectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher n j (r:h66y*hr)xxr9hdf3yfre a uniform electric field is direc 6 fd :jr6n9y f*rxr(3)yhxhrhted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrib jr;3l1jxhu e f26.yvum near an electric charge

  A positive point charge is enclosed in a hollow metallic spherem* *ewn7w3s*m -pkmh l that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spher-m *mmswwehn k7 **l3pe has

State three properties of conductors in static equilibri .8;kanh2xd atum.

State Gauss's law.

  The charge carried by onet ):fb;kl//j yqlp(ix electron 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 +bo6ya8uy1 a f2icft6xb9 8 y*r2.00 mC. How many more protons than electrons does * 6i68ca1 t89o2uyyrabf yfxb this piece of plastic have?

  What is the charge on 1 kg of protonb6+)ythvk b +,x5oax06lqw qns?

  An atomic nucleus has a s;ugzx3 1 b1ngd1 x)pacharge 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 -4.0 mCrl u+2b9ww,cd /ldn 16gep4so, respectively. What is the magnitude of the electric force between them?u1ldnc, 6w2be 9gwsr/4po +d l

  A 1.0-C charge is 15 m from a second charge, andp ,o1-dc(v7uv0uazdn the force between them is 1.0 N. What is the magnitude of the seconp,vdn1vcu-( 07udzao d charge?

  Two 1.0-C charges have a force betwel mwyu9f5l)a 0 ,mxe.gen them of 1.0 N. How far apart are they?

  The force between a phsdum 3 .qw 0o.e17ok$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.ij1vt qj) ,y0u0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elec,) 0jtiy quj1vtric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thete3 hfi-y-jz. 3r r*yl first charge is at the origin, the second to the right at x = 50 cm, and the 3lejyihz-.f -r3y *tr 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 +27vfg8)+fpovg .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 dir g8fvof+7pg)vection of the electrostatic force which acts on the charge at the origin?

  Three point charges are locatz,rui. jql68- hgql2nvgm9 t31vtrd ; ed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; 93v1h.vjg2il8z g rd-ttl6m,urnqq; 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 tf zu99s w4m3bof a square, 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 charge at the center. What is the magnitude of the force that acts on the center charge if a third charge 99bzs4wmftu 3of -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); Qwjyi3ut 8+z ts7 alzkzg7ih (.j3n4 l(x8 )ict3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 n g (nttjci y87t uijiw3ll3z) h(74z zk8a+.xsC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nqgd3k u ez1t:)C is at (0, 0). What is the direction :tgedu kqz )13of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 8xx . 9*frvmr-i9;cfmxr m4v8xv)ie f mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ele i 4.rrc xf *)xx9mxv-fr;me8viv98fm ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whacx** 7zdh( gll;o cl:zt point, on a line between the two charges, would itccz gzo*hlld :7(l*x; 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 +9.0f sdzz3 fqbad,*jox524 )kuq4 x hwk98-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it isfd4kdw u3bxj, sk2a489 )qzqx*5fo z h zero?

  Charge +2q is placed at the origin and o/kexrf9-gua v5z 0k3 charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero?-9xu z3af0ke5 ko/g vr

  A copper penny has a mass of 3.0 g. A totokw):;h5 3jusuy rbv1al 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 attraction of d ;na/z br5tc2a fixed proton some distance above it. How far above the electron iadz 5ctb2; n/rs the proton?

  Two 0.20-g metal spheres are hung from a c av-:bjq931s ksx hpw6ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them sb6 :xwakqsh91pj-v 3apart 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/ xlk6oyrm ,h 0+dpm12ipnb0o is the magnitude of the electric field at a distance of 1.0 m from l2 dno1, /kpx6+ym0rhmpo bi0the nucleus?

  What are the magnitude and direction of the electric field at a distz t;wg;t0iij df027y tance of 1.50 m from a 50.0-g;it7 0dtwz tiy;02fjnC charge?

  A 5.0-C charge is 10 m from a small test charge. 6h;7jn uash5w2;9 eogtnkl (i What is the magnitude of the electric field at the location of the 65l;ieuh ojnh7 ag9(wn; 2skttest charge?

  A 5.0-C charge is 100 8)wd iryyp/*4 0yrmdjo8tsz m from a small test charge. What is the direction of the electric fie8zy8di m)0ry/wpot *0 y4rsdjld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu ,9*v6s vzcofl(3quslde of the force experienced by a 1.0 nC charge placev9uzl(qclvsof6*s3 ,d at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a disq2v sd(43twcql as(j4tance of 4.0 m. What is the electric fielqt vlj 4cq(32ds4s(awd at a point midway between the two charges?

  A 5.0-mC charge is placed at te7,ijvx( j;xr he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electr jj,v7; ix(rxeic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma .kdt vv)7z+bzpv7u4irk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field t+.vd)pz uz vki b7v74zero?

  Two point charges of +3.0 mC and ;q7zym4+bqu w fv3xk *-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the eq7 uqy* 4 wz;bf+3vmxklectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of97)b(zxcx9xbgo ak sjjsf:- m )g9 l0y side 0.50 m. The last corner is occupied by a -3.sax gxlkxo9 (c0y9b-s)jmgfj :)7z9b0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a s ak9 b.ri az3x:ugpnm7/e+ el9ide. 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 mC at (0, 1). What is the magnitude of the elea ul97z.+x:npb9g/eir e3 amkctric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it e ec6ze0 8c ,) efsmxap9(sli5is placed in a uniform electric field. What is the magnitude o sz xp5ec6se09em caf,( )el8if this electric field?

  A particle with a chjm2o3e 7u6dilk1 u( wbarge 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 is placed in an electric field of 600)lidw8-bym n 00 N/C pointing downward. What charge must nl b)wmi8d -y0be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nj em2x)eedprh3eu h /4ty 6:9qvk f)4fC. The ball is placed inside a uniform electric field, and is suspendyk632ep/4fe)xej h: e4fu)th9r dqmv ed against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius oqxm bj/vq2))10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's su/x)b) qq2vo mjrface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What isq8ch) rqhd2bskii()8 the electric field 6.0 cm from the center of the spherehd(ic qhk r)2q8sbi)8?