State the law of conservation oq x3-ab j6cq8ff electric charge.

  Is it possible for two negak2 w7q20i t ntjvrzz+1tive charges to attract each other?

  Is it possible for a po)xw hjzzesemx*qpb; 7wz 5)mw:zq**8sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dw1 livfrkxz f6e8l6 +y /gi,*ruring the process the glass rod acquires a positive charge and /rzvfg1k*il6r y6 xif8,+lwe the silk

  A proton carries a

  The model of the atom sh 3cwy+,y l vrbmx.;56 roct2lvows a

  A neutral atom alwaysvm lw0a+p1x pcbs.7v. has

  An atom has more electrons than protons. Th2yky0 bya u,1ne atom is

  Materials in which the electrm*:umf7f w7;p d 0kxzkons are bound very tightly to the nuclei are referred to amfw;mpkd:xk70 *7zf us

  Materials in which the electrons are bounno0v v ykhf8p+*tul/nyp1wvo (: wy2;d very loosely to the nuclei and can move about f uf2 ykhn* 0w vtn(1+wl; y:/opyp8vovreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharjagy)68d5sew59x9i s 4xssc d ged metal bar. The end of thesjy89 s9is5x4g)w6 eaxsdc 5d metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are vukzw 5a0hs/ a3u9m-w+l ii c2placed near each other on an insulated table. Spherh/ai29+5 wz a0v islw -cuuk3me B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedy6n f *5kxymw3 zs(.dz rod charge an electroscope positively?

  An originally neutral electroscope is briefly touchetrh j70ajk;vnt:s5l2 d with a positively charged glass rod. The electrosv5l:st aj nkt2h7r j0;cope

  An originally neutral electrosavinal.(fva)8lh t bso 9- x81cope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed,a8a( 9a-ionx)b81v lh vsftl. the electroscope

  A positive object touhgxlf+,t(qsrk s-9n,qm s)g7o0a, f3l2 q dp eches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touqph-,m 39g(lgf d,afrq)kne2x l st,o7+s 0sqch it. What happens to the leaves?

  A large negatively charged objeff;sb3 njbvt:dv00w 1ct is placed on an insulated table. 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 bal w:f0j vsf31;tb b0vndl, 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 b03nx3 *kapkplv9 o(ythe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dis)us99yrd1cpmr x l i--tance d. The first charge is larger in magnitude than the second charsdi9x ry-9rc1)ump-l ge.

  Sphere A carries a net charge and sphere B is nj c5,ba2 ngzm)yp( 5koeutral. They are placed near each other on an insul2npcg5 ao5(ykbm ), zjated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If th9imt6zbg q r,lxd4 m;*e charges on both objects are doubled with no change in separatiom4z,*t mq 6d;grbxli9n, the force between them

  Two charges are separzj7u.(pgg+ tcqz* 6m xated 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 are the new mutual x 7ju (zzgg+6m*qp.ctforces?

  Two charged objects attract each other with a force F. What happens to the 3y .3e 7vl42zmhjfumpa8mu-d force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-.pjz4 a7lfum me82vu-yhd 33m fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 mvvc7s0lar,(w3bes h)2; hc-+kbh vqf. What happens to the magnitude of + (b0-2k vcsa)l7 ; vwh hres3fqbc,hvthe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dipip0a 9 s a3z)l)vgh1u uuk.a2stance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to h)2.31 ui p9v0zugua)k paalsthe proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatk laf44epn)p yl -jte(/f;-z j happens to the size of the forpelnkt efy4--)j4jaz/;pf( lce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed atw74c/bi lp +zt 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 electrostab4i 7+w/zpt cltic 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 of the square?

  A point charge of +Q is placed at the centroid of an equilateral t f9++oioo; mmwfp)x/d/0v lqqzt*)r 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 o prqmzt)*f)i/ f td9 /wlq+o0+;omvx 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 isuxaq:c 08p* lo not a vector?

  At twice the distance frond7sse): hu xtq a xdmqt*9qnlg.9017m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value+xo:dy tsy7z5r) gj( o:hxe7p between a negative and positive charge along the line joining po()jgtoe dzs57hx 7y:ry:x+the two charges?

  Is it possible to have a zero electrifoj6b23k4l7 9fl:q:(ott p f j rsitz,c field value between two positive charges along the line fzoj9t4qrtklpstif3j,l2 :fb 7o:( 6 joining the two charges?

  Electric field lines near psitive pohx :x fhh( opms**74l xgy-h-dint charges

  The electric field showolrw f 5h:xhqbv6*6g 0n

  Can electric field lines intersect in free sp jl n.01nq p3/glwvb02vv ;ssmace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electsv i mk,v k)..th7x+qa7hlw 6jric field. Give a statement concerning the electric .j6tmxv h q+vak77 lwk).ih,s field in the block's interior.

  If a solid metal sphere and a holl 7gv(a tyo vd7xuoht /-,c hz4,5u;udrxm,u9 uow metal sphere of equal diameters are each given the same chh -vu y4 ,guo,h/;t7orc7xx tmua,dzuu5d(9v arge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablejc x(9n wfr8tc jz0wu+v4l,, s in a region where a uniform electri zursv,49cwt(n flj0,w+c x j8c field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elt-x;8q+j pl4um b ak.g 5)exluectrostatic equilibrium near an electric charge

  A positive point charge is enclosed s;bp 6usf8ljews3ae6 j. 5jr/ in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field ataje6l se86r/ ;.bjpw f5sus 3j a point directly above the hollow sphere has

State three properties of cnxsjf 3/e ,3he92uo koonductors in static equilibrium.

State Gauss's law.

  The charge carried by oneew :2n1i.;s glmmz zp6 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 +2.00 mapt / -jbq;mz(C. How many more protons than electro/bt;qzm-ap (jns does this piece of plastic have?

  What is the charge on 1 kg of protons?zsal**veih *5w t( ;qy

  An atomic nucleus has a chargeq+.nkiicpcxdv o83 k:xsp*+ 9 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, s/r*sm;y3 gl h a6ytyig.sr(f tb8h6k.eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 8lma .f/ (6rigsy3khy t ;y*r6 shgt.bforce between them?

  A 1.0-C charge is 15 m from a second charge,;*:h ;dy q9mms6ep w0(eqn rbn and the force between them is 1.0 N. What is the magnitude of the second chmnsr epq;dm* 0h: y9n6eqbw;( arge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t vka jll-n*/46sv+ rdmhey?

  The force between a )pbxqf 2b0u d9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, q(ppkxx lswaf,5p 9owzj*: q-sa o92-experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the e:-z9aa 9xp5fo 2xoplwwpk(sq j* -q,slectric force between them?

  Three identical point charges of 2.0 mC are place9ri(0ov7 mkmv,v2so xd 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 force which acts on the chov07v2x(k,v m9irmo sarge at the origin?

  Three point charges are placed on the x-axis. A charge of +2y64rqo6ko: i l.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 4r6o liokqy6:and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges arph77).wn4cbn j vqt h6e located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0.7nwh bv6 hnpjct) 47q; 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 of7kxb q2.cf- q0t gf7z8l(srd(hg 4lk d a square, and a second point charge of -Q is placed at the upper-left col((8xdfk2lrgz 7cqhfgsk0dq .4 -7 btrner. 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 is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n 29p uy .tqays5 b(y-ajkz 9yd)eux(f(C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thpt2-yakubq9ea9y uj5xsf(y.((z dy) e 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); Q3 = 5.0 nC is dy7l6ad0g(bvo s,d7 dat (0, , da dd7vb l(7ydg6os00). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC )qlx*3d(-wovi ja shx p:hb6n.ze*e; are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostai)*o -dq3hpz(e hb.6x:s;nv l*xje watic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ar;exu +ue*nfg n a;5m4ye separated by 3.0 m. At what point, 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 woueun5u;n;x f y eg4*ma+ld be zero?

  A +3.0-C charge is at the origin and torq0,-8; w;tlkbgi gsrwd9 1a +9.0-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 is zero? o8ttwlisdr wb k0; -,q91g;gr

  Charge +2q is placed at the)liqvhi 7* py nebjy4 )5vl7s: origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on)iyls vlhq e7j4:b57pvi) *ny it is zero?

  A copper penny has a mass of lvjs xw s/2d8z l;l* *4i fv2huuz2bn13.0 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 againeajjz81hvqf g)/61gq *g5j sc)7 fm edst the force of gravity by the attraction of a fixed protonh q 1gm /1s zf7gv8jjqeead )jc6g)f5* some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fro(mtg(*my v uncb39xde922gz8 knf+ tk+zd6jv m a common point by nonconducting threads whiz 6unktg9(8y*2z9mxft cg+dv bvj m+(ek n 3d2ch 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 magnitude of the elefo) 5 a*d6gn+v2 qcq obzo9z;zctric field at a distance of 1.0 m fob c zv5g qzoaoqd2 ;9nz)+6*from the nucleus?

  What are the magnitude and direction of the electric field at a87 or,quq02ni cn3sq6 p4 wpuj distance of 1.50 m from a 50.0-nC ch2 q,0u 7pon4wn 8s 6rpquiqc3jarge?

  A 5.0-C charge is 10 m from a small test 4jp 7mfhw 8+llcharge. What is the magnitude of the electric field at the location w fph7j4+lm8l of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directizne220*ozx )pbuybcj- fzyj0 -a7mz9 on of the ebpb 0jyz cxem2jn)-9z*- oyu20 zz7a flectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude qmjq7,obh2 6z, c .yriof the force experienced by a 1.0 nC charge placed at th,zioj6qm 7.2rq bh y,ce location of the test charge?

  Two point charges each have a value of 3.0 C and are d(q2 xb8y)sl xw9gw/y separated by a distance of 4.0 m. What is the electric fieldgwx( 8bxdy2 lq)y9/ ws at a point midway between the two charges?

  A 5.0-mC charge is placedpp rsxnl0+( - pybou4(2:b ehj at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fb2o( 4:ysbx-uhlppp (+r ejn 0ield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticjua72i wa-9w.+jsecial9e:. zk so ;wk and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two cha2s+;e.i wwa k-li9jzso9e .aj7acuw :rges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at t3i4hn/t u /yux = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betw34u/tyh iu /nteen them?

  Three 3.0 mC charges are at the three cornekqf myv-:n/ -ogu05xsk:xo714y va jurs of a square of side 0.50 m. The last corner f5 yxvjy1 o/7 0qako:um-snxvu-:kg 4is occupied by 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 arejy 3 f;6lhm4ej 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 electric field at the squarem4hl jfy3;j e6's center?

  A force of 10 N acts on a cj/k h.g: eqe4. osui/lharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitul.j ke:su io4 ehq./g/de of this electric field?

  A particle with a charge of 4.0 mC has a j2i(am.j9m tomass 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 i bf2nx6f2g 7jvbcc*-ds placed in an electric field of 6000 N/C pointing downward. What charge must be n6b7- j bfg2c* 2cxdfvplaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrieo2bkxnr ,(hy/s a charge of -2.00 nC. The ball is placed insid2,x h r(nybko/e a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge0z.4fa 3je3 f k9axprblupe21 of +2.0 mC. What is the magnitude of the electric fiex feluba3 0k29jpr3z41pf.aeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What isr80i 6kj5)1 dtofkj+(e1 u*ylv z ixmb the electric field 6.0 cm from the center of the sphere vek1m1x+(f 08z6uidj k*i)b 5jtolry?