State the law of conservaaes2l1w8bf w ha,cqry8 49olf u* m;j8tion of electric charge.

  Is it possible for two negative charges to attract eacolb3 sdb 2 emcdm*,8k7h other?

  Is it possible for a positive an9 tm,,0e 3wueqxl *ekwd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces7p2qyut9fc1 e* jxbg-pin( 1ks the glass rod acquires a posi792nceqbt1 g*1y -puk fjx(pitive charge and the silk

  A proton carries a

  The model of the atom show4 enmlh)dj zy:-h03u qs a

  A neutral atom always huw7ok l6ljom d 1dfl40 luu...as

  An atom has more electronxiv uu* 1c;)+f4v(i7yy0y in8qhih v ns than protons. The atom is

  Materials in which the electrons are bound very til9 z8u3uykx4 cghtly to the nuclei are referred9lxuku4 38yz c to as

  Materials in which the electrons are bound very loosely to t. tqrzzha(1yey8 )d/ dhe nuclei and can move about freely within the material areazt .1 rzdeydh)q(/8y referred to as

  A negatively charged rod is brought near one end of an unchs6;+ 1oc3qmts6kwli4; 8oazme kc 3wlarged metal bar. The end of the metal bar farw8c;ostzw6 qksm+1 kmi6o lca3e4l3 ;thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutr 5rrsu 7sjqsha./+c- zal. They are placed near each other on u/aqs.5 zhr +r-s7cs jan insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit 9/mzssn*tq* wively?

  An originally neutral electroscope is briefl231zttk4aid ninl: (,c2nltt y touched with a positively charged glass rod. Theti ikzl( 1atnc ttn 3n:24l,2d electroscope

  An originally neutral electroscope is grt ,x4 tbv;7e )pv. q:wibq)ueoounded briefly while a positively charged glass rod is held tq).bu i,pebe:;4twq )7oxvv near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electhssu3bt8 0j;zroscope, and the leaves separate. Then a negative object is bro;zsujh s3t0 b8ught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ndzz51dr 7eu-is placed on an insulated table. A neutral metallic ball rolls straight toward d157-ezurz dn 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 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 Coulomb conk ms8ft) ) ozxytj8f30stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance e v/p(6c7igvxggor5 rrx58b.yme( u6d. The first charge is larger in magnitude than the secoyp(g/rv7e8(xm rvgg bce66xui5 o5. r nd charge.

  Sphere A carries a net charge and sphere B is neutral. They o be0pn fwh.5(rkv* msp2o3l;are placed near each other on an mhb on* pw f5ok3;0.s2elrvp (insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargw8v a3)00fr-n8hcbhiy /srsu es on both objects are doubled with no change in separation, the wi3hb8uf- 0s) vha8rncr s0y/ force between them

  Two charges are separated by a distance d and exert mutual at ,*oyc)t5yet8v ;ncf rtractive forces of F on each other. If the charges are separated by a distvnf)*8yr ;oc ,yc 5tteance of d/3, what are the new mutual forces?

  Two charged objects attract each othp)p9,lj-: qxbp jwkv* ,iljo;er with a force F. What happens to the force between them if one charge is j )pjqw ;i: j,kxlp9vlp *-b,odoubled, the 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. W.) o34zjyalenhat happens to the magnitude of the force on the proton if a seconjna4 lo.e3)zyd electron is placed next to the first electron?

  An electron and a proton are separated by a distancemgxt0wv7be:gkg ;i a( *a99qo of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to themib 0tgx7k9eoqv: g;(aa 9gw* proton?

  An electron and a proton are sep-spf.a+ 3rooc arated by a distance of 1.0 m. What happens to the size of + p3co-s.foar the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plw:*m o-4,gqebstjgd3aced 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 aw-g*:q,e gj3dt ombs 4t 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 placedvu /jr6q:-:n :irxhfh at the centroid of an equilateral triangle. When a i r:x6:nv/qhj:-f ur hsecond 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 following is nov 5l ((seawc,/ods)slt a vector?

  At twice the distance from a point charge, the strength of the electr9 0mo5zcp/,it0ml1 8rmod: fk vjghg: ic field

  Is it possible to have a zero electric field value betweee( o02oh)v)fh nyug d0n a negative and positive charge along tfyvo0 o0( uehg)hnd2) he line joining the two charges?

  Is it possible to have a zero electric fielde .ow.gnyz7) hlu3j8 l value between two positive charges along oy8)n7ejw .3zl lghu.the line joining the two charges?

  Electric field lines .5rh):xjea799dvi h n+wcev y near psitive point charges

  The electric field shown ,xy -rf +gew7p:*q:w6ft nhxs

  Can electric field lines intwv*m-/u4-v stv1gbv0u j 1wwcersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele2mu8cc v5t y-xctric field. Give a statement concerniv52m8 t-cyuxc ng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spherex3gor-;1 tdnf of equal diameters are each giv1;nd3-g xtr foen the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformde k26vaxh ,h8 electric field is directed straight upward. What can be said concerning the ,h kv68 eha2dxcharge on the block's top surface?

  If a conductor is in electrostatic eph3)+rhh lg3dck34 cx quilibrium near an electric charge

  A positive point charge is enclosedv c9qwuu*.dk . in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electu*. kw cq.vdu9ric field at a point directly above the hollow sphere has

State three properties of conductors in statiid05m dxkx;rqa6* bp.jybgn2 ( i,3wv e4+l nrc equilibrium.

State Gauss's law.

  The charge carried by one elei naj6.-r o,f*fyg+mx :e(srf ctron 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 6z)(ftpo;kc k a net charge of +2.00 mC. How many more protons than electrons does ot k ;k(f6zcp)this piece of plastic have?

  What is the charge on 1 kg of protongg wy-ab9 ;3has?

  An atomic nucleus haeufnpde8f 93mi2j y, 2s a charge 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 val/)z.9n82z j cml rbgfkues of 2.0 and -4.0 mC, rnm 82.bj/ f9gzz)klr cespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and t yymjhx2y9f rrk975p )6eu4bmhe force between them is 1.0 N. r 9pjr59 7 ufbym)yh46x2eymkWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between themcd9wr8b 7rpo45 ci6u l of 1.0 N. How far apart are they?

  The force between a c*lur x/.f- fb$30 \; mC$ 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. 6qxgu,hy ji3f5o- :rs If they are moved to a new separation of 8.x,h3-6s rfu5qgi:oy j0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t+x4a.jthf;gok+h 9)r(t.jzmx)9z xab b0 yg lhe 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 +ftta);hzg 4x b)ao k9zxxjyr0+ .( 9hjgml b.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 +2.0 mxrqf0txmv :,n)vc04h.wm)ic C 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 which acts on the charge at thefmtm4.x c)rixn)v:qc0 h , 0vw origin?

  Three point charges are located at the following positions:dz ewiqlebc(;2 l; bg5 /oxn;. 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. Whxcbb io;zd.gqlw/e5n2l(; e ;at is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plw3 yfrtj(r67 aaced at the center of a square, and a second point charge of -Q is placed at the upper-left cor6( r7ryfwt3janer. 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 = - ocx(gvjpxc7rm;5 c/2 1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of x vcr/ 2 p(m7g5;jxoccthe 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 = 5.0w5 ydo . 75v*jb;1jv)h vlwfvr nC is at (0, 0f w5v) h;drvlwy 7. j1o5jbv*v). 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 ve-hyr(2zxw13yhmf b( lrtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrosta2h m r-lw1zyb3(h x(fytic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arentw( 43cjuz 623ierrr 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 electrtcer r 2 (uz4rjiw6n33ostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at/c e4wg h8e8qiy92w9st1+exy+ook9l qo 2yji x = 4.0 m. Where on the x-axioqy2 iw98sqey/t2cl ywg4 xeiooe9+ j+ k19h8s can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin l l; 7(trcfxr9i9em1x c;a004qrbz ycand charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thr ba qcei9cl;z0r1xc9(l 0tm rx;7fy4at the force on it is zero?

  A copper penny has a mass of 3.0 geqy9d j )znwyg0nx901-zg-k a . 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 7iu- cccxk a.wkp)re.f84f0e against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron if. )k7uec cifkwc 8.a-xep 4r0s the proton?

  Two 0.20-g metal spheres arm- jq ;9e50 x *q6qelgo*amsdmx.z0gce hung from a common point by nonconducting threads which are 30 cm long. Both are given identiqleoc9ga g 5q *x.m00je* qx;d6z-msmcal 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 5t qg(trjp;c)2 9pqoqthe magnitude of the electric field at a distance of 1.0 m from the nuclq toqqprp cg(t;9 )5j2eus?

  What are the magnitude and direction of the electric field at a disu1egm do: b ;9q5b)wuqtance of 1.50 m from a 50.0b1edbug o u 9wmq:);5q-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th+ mq4 (orxheu)u *nop8e electri(em )p*8+xohu 4 rqonuc field at the location of the test charge?

  A 5.0-C charge is 10* 7h+ h xlws kha+oz (li) tdd2jza5,qz-):yej m from a small test charge. What is the direction of the ezllhikoz7:qs *xh( )tedj5y-a zwd )ah2j ,++lectric field?

  A 5.0-C charge is 10 m from a smq50buoj 6scvidq;( ,vl5d 3p uall test charge. What is the magnitude of the force experienced bqdvul s6d 3bj 0pv;u,oc(5 5iqy 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 a distan 3.z0g2f xrmtbce of 4.0xb m2 t.rgf3z0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4vr1l56 wlo clxox/7l .s bwo,y9bm*. i.0 mC charge is placed at the 50 cm mark. What is t.r x oc*6o57lo llibwm91sxv lwy/.b ,he electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meterzv5uv b76jblau(d ;4s 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 ;6u 4dvza5ujlv7bs(b field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m/e vea- k*r*us. What is the magnitude oukvreas/- ** ef the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornf+9dc/;gi xzic2+u7sveedn b4 v0+wders of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of dn 4+dzv u eigdvefix9ws2b /;+c7c+0 the square.

  Consider a square which ie+f2wwc j9z6v s 1.0 m on a side. 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). j2ce +wfv6 zw9What 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 a uniftn . 9lf,gduz0orm electric fieldg0nuzd. ,l9tf. What is the magnitude of this electric field?

  A particle with a charge of 4sdgws oaqi-l;h-bt 0 c ;1f4v6o 6dwv).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 manjg3j yo w8aa1 68c)riss 0.120 g is placed in an electric field of 6000 N/C pointing dow3j6y1wjg8 oai) cnar8 nward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries3iv7 volh xbf:e a*kf,)o.: xb a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Whe3fho kxvbi7b)v:,:ao lf* .xat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chaxr3(:ylgpv2c/ji 8d) iz t 7gyrge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacegl dyz2vc7i(px/8igtrjy :)3?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 ms 2(7i vr4uenlC. What is the electric field 6.0 cm from the center ofe4s(u7nvl2 i r the sphere?