State the law of conserva5thi f7,-4gxz2 ne ibttion of electric charge.

  Is it possible for two neg)n4tuj -*d a m:c5ij-ia:fpt mative charges to attract each other?

  Is it possible for a positive and a negativ tz6.9hb1* sp5for mqrl*jf-ce charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gluu: w1q,1yzl -xxa5p tass rod acquiresu1z-wx 1apl5xq y:,tu a positive charge and the silk

  A proton carries a

  The model of the atomokp)jio6; i:s shows a

  A neutral atom always ha*-k)n2 e,x+i svc,ujfv ef 1tms

  An atom has more electrons than protons. Th-yj*v :y*bfwle atom is

  Materials in which the electrons are bound very t npk1xgq(cb8gb5 pm 2adp9()uightly to the nuclei are referred to acmx5 2u9a(q p1d(8g bpnp)kgbs

  Materials in which the electrons are bound very loosely to thesr*au mn+nrv5hu(1bfarl 9) yo-/ v(w nuclei and can move about f w+yn/faarn1*vso-9b(5mulrr ) h v (ureely within the material are referred to as

  A negatively charged ro;u7ydd: vf v)xudp; 5ld is brought near one end of an uncharged metal bar. The end of the metal l u5xu :)7;dpvdydf;vbar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, anav5p v1rq19 tw3j n5qud sphere B is neutral. They are placed near each other on an insulated table. Sphere B 3vqw5q911 avujn5pr tis briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrw - s20ox4hofmx 42oxyoscope positively?

  An originally neutral elec5mq1- ya23d.fyr amiz troscope is briefly touched with a positively charged glass rod.y 1frmaa-5z32mi.dyq The electroscope

  An originally neutral electroscope is bj ):1kg 5 h6ta3/ fcryjtdm9igrounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosco)ay1 fj httgckbd63mrj:9/5 ipe

  A positive object touches a neutral electroscope, and the leaves seuf ;qqd(*4dp8hi nqk9parate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?(hf qu k8id9q; p4ndq*

  A large negatively charged object is placed on an insulated table. A neutr4(s/ pp 93qmsd/nizkn al 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 touc dzn3 ki/ppnssmq/( 94h 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 Coulomb constant/o 8feco4.rr m $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disa7w. )+ jes9fj(rcogsgq d-5ly s)g 7ktance d. The first charge is larger in magnitude than the second charge)7. -j sr5 w casgdglej(9k+7 s)qfyog.

  Sphere A carries a net ch, ul-bv /u*zcyarge and sphere B is neutral. They are placed near each other on an insulated table. Wv,c-uyzlb* u/ hich statement best describes the electrostatic force between them?

  Two charged objects attract epw*4 78mqk jl4 op/wpnach other with a certain force. If the charges on both objects are doubled with no change in separation, the fokwo4np8jlp w*qm4 /p 7rce between them

  Two charges are separated mc tmuz-esdw4+l 0:j(vu)w.+m /fwicby a distance d and exert mutual attractive forces of F on each other. If the charges are separatedilswcw-f0j vuc/ ) .ze(m+m4mt: +uwd by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the foa*u 1a3xe whb-2z rv1yrce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduc b3ux-y 2a az1wv1h*reed to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distv2o(kt4j) tkt,v2i ibance of 1.0 m. What happens to the mi2vk tv, 4o2) bk(tijtagnitude 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 1.0 m. What ha8+ ulgq rq,a vjf7z:,kppens to the magnitude of th q7faquk v+ 8jlz,g,r:e force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepawk0j ;g8t+x2db -y odurated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is d8w2utoj +xybgd -0 k;moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squj mo*b+xdm7a8;a*al uare. 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 of the net electrostatic force acting on the positive charge at the center o+db; a*j*7u m mxlaao8f the square?

  A point charge of +Q is pl2o ylkz8z 76c;gpuwnktx5(j g0;aa 3vaced 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 to a third charge of +Q placed at one of the ;acxnwu58vzz0o gp k ;63( 27ya ljktgother vertices?

  Which of the following is 5dju7(qox y *d*hmfx0not a vector?

  At twice the distance from a point charge, the strength of u pb(z2ceqk8s s5x,u 9the electric field

  Is it possible to have a zero electric field value between a negative and posim+3bp oii6m.dtive charge along the line joining the t piib3om6.+m dwo charges?

  Is it possible to have a zero ele3lzte .tc4q lytx, ohyp,j1 5gat,5f.ctric field value between two positive charges along the leqcttyfjt,4.l 1oy tp,lz5g5.3x a ,hine joining the two charges?

  Electric field lines near ps;nyz ,kcd by 0.u4htc,itive point charges

  The electric field shown xstx +q 36euetmy5;2v

  Can electric field lines s+:evy7ebaao;xt62q9yoh 2 y intersect in free space?

  A solid block of metal in electrostatic equilibrium is placea4+i u0a jba12-czpc yd in a uniform electric field. j azuy1bp42aac-c+i0 Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ;(pscv,cerid-r0 +ru each given the same charge, the electric field (E) midway between ud(+ r vpr0c-ic;s ,erthe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region b;u4iq n pf 5x14vkgr)where a uniform electric field is directed straight upward. What can be said concerni4u gn)bv qrp5x k4fi;1ng the charge on the block's top surface?

  If a conductor is in eler0 4vcmmj vnak12 7go8ctrostatic equilibrium near an electric charge

  A positive point charge ism ovk0-tmib 8k5ul7m q/sgj6 ) enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly)qm/v6tj5mbgm-7ol 0s k k8iu above the hollow sphere has

State three properties of conductors in static equili/rwv ) ,d y4-alsqc0babrium.

State Gauss's law.

  The charge carried by one electr ckzs6zk9 w07ip o4ye7on 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 many morvmfc 2bc:4.kt e protons than electrons does this piece bfc cv4t:.2km of plastic have?

  What is the charge on 1 kg of protsxb wun,w56lf wf ))*yons?

  An atomic nucleus has a charv)ude8-/3 mh cn tau+y8g n(djge 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 cpor3rxyy7o /z vm5n3.harge values of 2.0 and -4.0 mC, respectively. What is the magnitupy3m5r. o z37x/v ornyde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force4jvs.3nz x9 c2gvg2d f between them is 1.0 N. What is the magnitude of the second charge4c ds xv3 g9z.ngvjf22?

  Two 1.0-C charges have a force between them of 1.0 N. How far vq/)0k1 riyyt*v crv-apart are they?

  The force between a do88i )qz( ublk4tc: p$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experieu ,/lqtm9u3fvg0tmth-zc ;y* nce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?tq-tcg,zvu yuf /lm3h90*m; t

  Three identical point chara v:0xh7 ppu:cges of 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 is at the 100 cm mark. What are the magnitude and direction of the electrostatic fop:c 7hu:xpa0v rce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +yk3,ue qavn.9 5-p ptxi3ddl8 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 whipn3v u x8-t,d.dqk95 e p3aliych acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mj2fkf6 +n ngg-C at x = 1.00 m; 6k jfn-f2 g+ngQ2 = 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 seco ged n4h03zgyq 2s36c6j5uhmbnd 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 charge2cu5n4bqg0h 3m63gj6 dy zhse 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); 4t*e +hq.vp+fvq)(eg;ghvm oQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of .mve)vo g h*(qge+v;tf4pqh+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); Q9 n/g.m gmwy8cax5u4 j3 = 5.0 nC is at x8a/mu9 ny. wj54gg cm(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vewsstj, q/c4x76xjbxj.e2w- uile2c 1 rtices 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 charges?-2sj clwu .tc2be4xwx6 7ij1/s eq,x j

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi oq: x3ogxc6u y22p )7(nrxaqrnt, on 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 ze a32 2(x)px6nqc ur:oo7x rygqro?

  A +3.0-C charge is at th rsat. ax jx45rv(8m1ge origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so 5m rxsa rj1x tv.4ag8(the net force on it is zero?

  Charge +2q is placed at the origin and charge -q qqiu cpc9pr/d4n9i 36y:9 -p1r wglsk o8t;v vis placed at x = 2a. Where can a third positive charge +q be placed so tr4kto1yrp 9qpp-u86wcdnvvq9i 3i:/s;l gc 9hat the force on it is zero?

  A copper penny has a m7vswa 5ad7;l6o1su j-r; zfr rass 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 against the force of gravity by the attracm41dt a,e(vri+ u6u pttion of a fixed proton some distance above it. How far above the electron is the +m1vdap (ue ut ,ri6t4proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thre+ps2tta rnt7 * ,xd7kgads which are 30 cm long. Both are given identit27r dskat 7t gp*,+nxcal 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 electric d/7pps0jj d1ril,tltn y4; + oht, qq1field at a distance of 1.0 t;t7jpol0lq/j,,h1 p1q iyd drst+n4m from the nucleus?

  What are the magnitude and direction of the electric fw ;kd(hk+ b ;bslj/la2ield at a distance of 1.50 m from a 50.0-nC + ;jdwkbb ;sa2/llh(kcharge?

  A 5.0-C charge is 10 m from a small test charge. What is the ml /ko cqb+l:;hcl h00uagnitude of the electric field at the location ofl: co0 0kuch;hb+ll/q the test charge?

  A 5.0-C charge is 10 m from a small teiegse06 5gxz2b ) 2gb tvv4g6otq7gt1st charge. What is the direction of the el7gz)xbst gqo4 v0ib2t66get5eg1 g2v ectric field?

  A 5.0-C charge is 10 m from a small test charge. Whqb i jger21j( j)e jtr43bk+.h1qny* rat is the magnitude of the force experienced rj*1+(bn j hjye t41.bqr2igr)eqkj 3by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated b 0fw*4a qrxc ni*r/7gwy a distance of 4.0 m. What is the electric field at a poi7xw gawq nc40/rf* *irnt 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 mCfiyc*uc -18sd uq o*ie7)0fyl:6 f ebl charge is placed at the 50 cm mark. What is the electybdufs il qfu6e-* c70i1*)8fy loce :ric field at the 30 cm mark?

  A 5.0-mC charge is placsnla +o6+dm k j+h 9icnc5r8*ned at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on9in+ n+ aml+ *dkn8sccorhj65 a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x71 3otnzqx 2x1afhcx 1 = 0 and x = 0.20 m. What is thxctx qf a712ozx3n11he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa h*3adsa, g qx2f(.;npteaab 1re of side 0.50 m. The last corner is occupied by a ; nap xad b3.t(h*s1efqag2,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 hhqc+6ad8/: majcd( pare 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 jh:c/ p+mdad ha 8(qc6(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( wqrm jn;s n/f;*dd8w when it is placed in a uniform electric field. What is the magnitude of this electrirwsw8qd ;/ nj;( n*mfdc field?

  A particle with a charge of 4.0 mC has a massf2,7bhmwv on5; /h siv 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 0.16)vyb exmh8.sae6u8b9g x hxl ,+lyn:20 g is placed in an electric field of 6000 N/C pointing downward. What charge m elux 8hay8x b9xg) nv:.6ylh6,sbm+eust 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 plagku2iz8a e r)5b,4as zy*x 8vbced inside a uniform electric field, and is suspended against the force )kiva854x aue s,bz82 gz*rb yof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.06hwfqe;c3jkr) , dm/1l xfvs6 mC. What is the magnitude of the electric field 5.0 cm from the sphcjkh),x3q;rs6m1w /6e ld fvfere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eleo/a1p5 nu r q8+uunky(m08cubctric1bq( p8n8+ cmr5ya0nuuk / uuo field 6.0 cm from the center of the sphere?