State the law of conservationc8 )a 15kcs3v7sianub of electric charge.

  Is it possible for two negatc*.b0 1d,eadd vtlz ,pive charges to attract each other?

  Is it possible for a positive and a negative c1vc;k6 a 1qkwa 6t8tq8 ook1jlharge to attract each other?

  A glass rod is rubbed with a p+w+ / ruutku e; io0i 8fi;,mdo6nt)ugiece of silk. During the process the glass rod acquires a positiveoin ieu wi8)o/mf+0;tukdg t,+6r;uu charge and the silk

  A proton carries a

  The model of the ato2qz):tsigocfs28b r)+ 9pmztwzta5 4y gx*f6m shows a

  A neutral atom always haq 5kq ax; 2eyrhu*a7)es

  An atom has more electrons than protons.9c mz;38ske9oc*h khw c0 5mtr The atom is

  Materials in which the3abbu*,igt n . electrons are bound very tightly to the nuclei are referred to b3u gitnb, .a*as

  Materials in which the electrons are bound very ums p0g sp,)shutyhi5*/b t93 loosely to the nuclei and can move about freely within the material a/bium y3)uhp 0 *sts9sph,g5tre referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. jfg b+) o9tc;+zp:vru v 6vbp0 The end of the metal bar farthest from the charged rod will be)ogbr90t b cpf +uvvzp;+jv:6 charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ;b c2tu u+ukll( ;ib.i2)hf tjare placed nearjibliu ut ht2.;fu( +2;k clb) each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch w:bkhb-)5 z4 iizyq.karged rod charge an electroscope positively?

  An originally neutral electroscoc z3n -xgq-syc6dm /9zpe is briefly touched with a positively charged glass rod. The elecm-/6y3- 9zsdgznqx c ctroscope

  An originally neutral electroscope is grounded briefly while a positively p-d q(51(bsapx hedh*charged glass rod is held near it. After the glass rod is removed, the electrosco hppq5xdabh(ds e1-(* pe

  A positive object touches a neutral electroscope, and the leaves separate. Theni (hz/6r h-uel a negative obje luz6/hh rie(-ct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablff5kq2a23dw mt eav6 6e. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A secod qkt 6vwm25fe6a32f and 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 t9bgi-xr (yh y f:dss+8he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. .6dlt4b-nubrn+t1 mjiymk/m1*g cg0 The first charge is larger in mag4d1t+*ij/bn6b.mgy1m l rn- kcgu0 mtnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Thechhfdi n(-4 owbg*: 2k+h ca(iy are placed near each other on an insulated tableh(i-g ci o:w(kh2h bd *+naf4c. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wite6 c3f0nbn mi-h a certain force. If the charges on both objects are doubled with no change n-ne6b3c0 m ifin separation, the force between them

  Two charges are separated by a distance d34ygu(k.ov4ma bu/s n and exert mutual attractive forces of F on each other. If the charges are separated by akyn3uvsob a4u/4 .mg ( distance of d/3, what are the new mutual forces?

  Two charged objects attract each othyo+48 x ep*ngyer with a force F. What happens to the force between them 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 *yn o+p8 4ygexequal to

  An electron and a prot wz.i9hng( 6- ,qerbp*uf uw.ron are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is .f-ubp9rq.w 6*uhze(i,rn gw placed next to the first electron?

  An electron and a proton are separated by a gp 6lrqv2dlk0i9x)q0vi vt* (distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pi)grpk idl vxv(tv9*l260qq0roton?

  An electron and a proton are j4hjpu:e/0vh f6 p( k wqd5h/nseparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is move5j k :ne0/pp/fjwv hhd(46qhud 0.50 m closer to the proton?

  A point charge of +Q is placed at the center o al+ h+wpqolyi*9m3d4f 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, ident mhyd3l+*l94+iwqpoa ical 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 triangl+ iu s0jez 3 (zup/lybxmql48;-c 3ngqe. When a second cha3p -yqzgl xq+s4lm3ju 8;/en zui0b(crge 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 following is not a vecto8 h +36tb. xnlvno:bqzr?

  At twice the distance from a point scgxo4xo3.gq6d 4,ju charge, the strength of the electric field

  Is it possible to have a zero electric field value zd-azeq) hj3b 9m)k7xg -e5b*s/sqa8nf u 8frbetween a negative and positive charge alob-8bgk8-s un*3hr5 sfxq) dzeq m/9f7eza ) jang the line joining the two charges?

  Is it possible to have a zero electric fiel 17 pyod ,ibdq+jjll*j;po75 hfwy.k;/q - hlmd value between two positive charges along the line joining the ty5yqplf jh+/l. ; iljhdokwq7mb1od; -p, *7jwo charges?

  Electric field lines near psitcd e /hp5v4x5qive point charges

  The electric field shownec*v9 4b y vb5- dbgf,swhq: )ccs*ye-

  Can electric field lines intersect in f4t4zq;v hk x9a1ho5wa ree space?

  A solid block of metal in electrostatig.uq2oa lf/c*c equilibrium is placed in a uniform electric field. .c*aqo/ugf l 2Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere bz4/g :4 c pi5ijx(icvof equal diameters are each given the same charge, the electric field (E) midway between the ceccx (4j/:gzi i5bipv4nter and the surface is

  A cubic block of aluminum rests on f 5nfsy m+w75ta wooden table in a region where a uniform electric field is directed straight upward. What can t5s f+mn5f wy7be said concerning the charge on the block's top surface?

  If a conductor is in electr9 (w08vsh 5,nii v.ftc7f 0u 2i-khm zhcxpu.yostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metall+-p u pf8i+x(ptmq2wlic sphere that is grounded. As compared to thep(- +qtpipuwfx+ml 82 case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.:0m8 t efougv0xe2 r9mo y)awu(o mt7z)a)y2k

State Gauss's law.

  The charge carried by one electron 0:aa8 vxxkfd8 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 mans, 7et46e5/oew shyj;ne wen+ y more protons than electrons does this pieces nw+entjhs5;7w e 4e/,eyoe6 of plastic have?

  What is the charge on 1 kg of proto.e;:u6v1+lqjr gr3ker b,r yvns?

  An atomic nucleus has a lm,*owksv2 4yfl; cp vx2q27dcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byn dszqr:aez *t.rha2fv +,j9, 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tdfre q za*n:vh9s,z 2+ a.j,trhe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themztf- 6i4x:0fhao wh ;j*0frli is 1.0 N. h4* io:zhf -0rix0;wjfla 6tf What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.m a*t :,gpgv5 ua//y +*oxiupv How far apart are they?

  The force between a bwxn., -ufh0l(41d zx:q nirs$30 \; mC$ 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-p70ji n1rx2; b di) m/ajx5tjbN force. If they are moveda2;0x/j nbm17 5xdpjtriij) b to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are place)u .*ff6jd3nzwi *m zrd on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the th f)m*z.j znd6uwf*i r3ird 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 nh3 wj*p76r ov k9hfkpc0l2v+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 pl9cv+wp k3j k2vo760r nhh* fmC 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 located at the follndyt/5p xw), oowing 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 mon/p)w yd,x t5agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square4jgj sv o5m.c/ es+ltf)9h;z/paa n (e, and a second point charge of -Q is placagzf .n4h(5 aesv9tc)/+jpej o/m l;s ed 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 is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 xkn0 o(+y2p4bp nyu 1l= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is4 u+ny y(b0xonklpp21 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 c(px(i r* ndhj ,n7o-m-:2g- uneacacnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thc pon,xhmg(c-j: *--e n7c2a a(rni due net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatw a,lohtk 0; dms125faeral triangle which measures 30 cm on a side. 5 wao,ha2dlmf1;0 k ts What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Atnxeqba-pu 9+5r2. vlr 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 would be zerle xbr95qnr2+-pav. u o?

  A +3.0-C charge is at the origin a w36 jtwyc()mand a +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 jc yt)m(6w3wa on it is zero?

  Charge +2q is placed at the origin and char 6w8 qrmo)yvid;s9; fqge -q is placed at x = 2a. Where can a third positive charge +q dy;r;i9qqwoms68v)f be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.gpx 7vmr8+yu( ik) 0tc 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+*j h998 i0 c/yer dlwigf;jn/ n,v:chlxa5di gravity by the attraction of a fixed proton some distance above it. How f cc/+ne,h05fj yrd gh 9lnil9:d8*jvai/;wixar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonb ty: 3v1:ehv q9cg9pf point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces the3 cgy :ptv: b9qe9vf1hm 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 tqd/hnc05cd2magnitude of the electric field at a distance of 1.0 m from the nucleu0 tqn2ch/5dcds?

  What are the magnitude and direction of the ele( k8g8y. tcyx ua2v2vdctric field at a distance of 1.50 m from a 50.0-nC t8ux k2ad2y g8c.vv(y charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitk 4l8 jid(p6 hgge78ceude of the electric field at the cd8pl 67(ekj4 hg8g eilocation of the test charge?

  A 5.0-C charge is 10i z35( ex+qwl,hbqzu 6 m from a small test charge. What is the direction of the electric35i+6q zq,lu( bewh zx field?

  A 5.0-C charge is 10 m from a small test charge. What is the m/id(jmk4dk8( ze ;wv magnitude of the force experiidm(d ;4/ev( zmk8k wjenced by 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 by )*8f-k4ma ggapcuehrm:zg; i c9o0v6 a distance of 4.0 m. What is the electric fieg * :gg6-a ip8)v0rmhm4 u efkcao;9zcld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mg 0om ng5a/z6kark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elec kgzmga 56o0/ntric field at the 30 cm mark?

  A 5.0-mC charge is placezp 3,+d5coamwkf v,di ca4h1-d 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 on a line joining the two charges is thed i +-c5 p3k1md awzfhv,,cao4 electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placua ov10ek u-hqj)f+jy7n wi9( ed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betq9+u a0j(-fyvi7o)nj h uew 1kween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. m: jtfoxu6d33oa-up 8 ),exti The last corner is o6a-duejo3ip,t3f)oxx 8 tm u:ccupied 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 are placed at tiz155szf - jukj+ q*mnhe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at j-q*+ zku5szi5f1nmj (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 on a charge of 5.0 mC when it is placed in ar,zvc2xxzyp7d1 i n (* uniform electric field. What(*c n7xyrxdp2 1vz,iz is the magnitude of this electric field?

  A particle with a ch utvpzi; d klvved;4qd 3*-0.carge 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 ofvvz9g i 3mk*i) 6000 N/C pointing downward. What charge must be placed on th9vii* 3zmgv)ke ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is2a.x m8m;)zxcg59 yyelbryl4/p y / zr placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude an gzyryl 5894pxrxa2mbc;y /e/z yl)m. d direction of the electric field?

  A metal sphere of radius 10 cm carries o7m q i33fzvs 5wf 0(;;gcgkooa charge of +2.0 mC. What is the magnitude of the elec;3(;mi o3 cg75wfo fsozg0kvqtric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaty; y:nqp-/,aksce 0md is the electric field 6.0 cm from the/-y ,scn;qkmeypd0a : center of the sphere?