State the law of conservaticib6/l ka7u 1 0jbfxbb-w6 o3eon of electric charge.

  Is it possible for two negative coqvx0omoit-* ,uw6u /qk69evd ei8 8wharges to attract each other?

  Is it possible for a positive and a nemagl(cx)x 66 yo3m5w ugative charge to attract each other?

  A glass rod is rubbed wit m;zut:p 38v-py+haov h a piece of silk. During the process the glass rod acquires a positive charge ano-m8 :yp;3zuv+hva p td the silk

  A proton carries a

  The model of the atom shows amr g*h0s50axpwa g0 (l

  A neutral atom always hy huy2a(- 3;8 scbim3vsxxd4 m- wj;sdas

  An atom has more electrons than protons. The +(wkhw x3 ule9atom is

  Materials in which the electronl2ov7 3jr bxl.s are bound very tightly to the nuclei are referred to as2x7.vrbj3 ol l

  Materials in which theu3 82qga0 utgk electrons are bound very loosely to the nuclei and can move about freely within the material2t 03q gguku8a are referred to as

  A negatively charged rod ismjnoi2 (.7o 45w nbsdl brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod4nijds75 wbon(2 .olm will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They avzkak8cnx,g3 , rrwyx , he:z+w/c5j 5re placed near each other k :8+,rr,xhaz3cn ,yk wz vwc5j5/gxeon an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelyhhel5 ofxt/51f 1ll2id0xyh) charged rod charge an electroscope positively?

  An originally neutral sp4v,w9qvltq/ol56s1mb :mt electroscope is briefly touched with a positively charged glass rod. ,v:lb /15tl6q oqmmts 49wpvsThe electroscope

  An originally neutral electroscope is grounded briefly while a positive-5x pmfrgqwc a 02ypw9lk*5+cr ob,6gly charged glass rod is held near it. After the glass rod is removed, the electrp59bkcyrw5om a-xp g ,q62rfg clw 0*+oscope

  A positive object touches a neutral wrr0yqrd b7* ,ilk-2relectroscope, and the leaves separate. Then a negative object is brought near the electroscope, *blkq2d 7 yr,r0irw-r but does not touch it. What happens to the leaves?

  A large negatively charged object is placecndw ( ej/3f*+/0brxj a q2z*w0ovwjsd 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 ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does eiq/2jw0 ow /* cbd+nje(jfvw3 as0rx*z ther ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the(d6, a;f wrjbfu-1*o qw5nj jb Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanhpo x(v+ l2dvd7j c,1lce d. The first charge is larger in magnitude than the second chaxc,vp jhv1od+dl( 2l7rge.

  Sphere A carries a net charge and sphere B is neutral. 8j0jsv fy eb9eu kg.55 They are placed near each other on an insulated table. Which stajv5kfb u 58.e0 9gjeystement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch .its2mj4;gur g ws9l9arges on both objects are doubli. su2jrlwg49tmg9 ; sed with no change in separation, the force between them

  Two charges are separated by a distan/7rdu*ao :vq zg(y vj*ce d and exert mutual attractive forces of F on eaaoq7 j uzv*(ry:/vd*gch other. If the charges are separated 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 fmx fbcrfa c/b,:xh)ec6e 7 5-8udiw)m: odsx-orce 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 /- i7sre,fumb:x-fd hc 6b8cx)5dew)am: o cx is now equal to

  An electron and a proton are separa3xgv,9sgd fq0 ted by a distance of 1.0 m. What happens to the magnitude of the force on the pf qxsgdv390,groton 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. w0- hkw9qwr yl5pcq4r1,;qohWhat happens to the magnitude of the force on the firstrqwrq1oq; ,h wl-c9 5y40pkhw electron if a second electron is placed next to the proton?

  An electron and a progyx.-sfa gy;i(n ebqrf l33,-ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron g(yl;asniy b3 qfef-x, .g3-ris moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. fih+yult707tule0y;4e t5 p kWhen 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 othyy e;7tl0uht f t0e5k47p+uiler 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 c73w5 gehhb,rzm 5vhi;ic gant7:w q,al26 k:j entroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force ,7 gakna2qzlw:;i th3w h7bhj i m,:gcr56ve5of 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 vecto) ao*t5bbvu4 rr?

  At twice the distance from a point charge, the stren0onf8um 4:psj ght3k- gth of the electric field

  Is it possible to have a zero elecsi r-myqe-vjw; u 4j56+:zrnatric field value between a negative and positive charge along the line joining the two charr-s i-; yqjw jmae:zn4+v u56rges?

  Is it possible to have a zero electric field value between two positive dai2 fku*uvv2 - ;fsl3charges vful3 fu*2adk vis2;-along the line joining the two charges?

  Electric field lines near pkul0(mr,ndsaza3 j89 sitive point charges

  The electric field shown bn7ua*9zjvx r:4 w8akx ,vc*h

  Can electric field lines interp mjs6nxl,kwp:9v9 ,bp/s * drsect in free space?

  A solid block of metal in electrostatic equilibrium is pla/ zr27w6ktzcj.q ockb*g : km,ced in a uniform electric field. Give a statement concerning the electric fg, czt/k: q o.r72bmwk6cj *kzield in the block's interior.

  If a solid metal sphere and a hollow0xfotp(cbi ** metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the0xt*op *ib f(c surface is

  A cubic block of alumidw9. kjhye*3 cnum rests on a wooden table in a region where a uniform electric field is directed straight upward ekh3*cj .9wdy. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargqdpigub4u-* hjejt vo 6)4 uq;u 6(oe8e

  A positive point charge is enclosed in a hollow metallic sphere that is g155 0. bfepqflscks/e rounded. As compars1ebk. pf lce0sq5f/ 5ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties owrfpe/n x5z ;pnv0w -+f conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron iskycxhk (j332ox+a of7 $e = -1.6 \times 10^{-19} \; C$. 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)ag,t ,v; 7s;j w jd8wxtapi,i more protons than electrons does w ,;i;t,aitj xpa vdwjg7)s,8this piece of plastic have?

  What is the charge on 1 kg of prot*w6si1o wsy( yons?

  An atomic nucleus has a charge d4w j8y1 f.bzzbo8yml2 ae578fcip v6of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cj(g6xgw f7 ,vqm, have charge values of 2.0 and -4.0 mC, respectively. Whaqf gw( jg,7x6vt is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and th gk4. fxb1rzvfyb442 dpze67ye force between them is 1.0 N. What is the magnitude of thd4 yy7bzkefr x4b gvz6f4p. 12e second charge?

  Two 1.0-C charges have a force betr./t-5)hny9zn xr kqyween them of 1.0 N. How far apart are they?

  The force between a c h)4:0 h:7jttb zuhon mb45vc$30 \; mC$ 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 ;(.whry*kkbs1p; ix cp0x )t fais/-eforce. If they are moved to a1ckw ( p0xb/kf.itr pix s;sy;h*ae)- new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placnv p;yclrpo,a (bzme0/+j;.l ed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third isc bo 0ap+rpmyl(n/, e ;.;jvzl 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 char0jvbd(7 j 4eewge of +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 elec0d(7j ve4wjbe trostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x ff4csz e4woym;ue y h79/i69 q= 1m7co; 96 iefyh9/fsu44zewyq.00 m; Q2 = 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 ib fe9: p8ls +k5* ndpk81fxmka square, and a second point chargepe:9nm85*+fki s pldk8xkbf 1 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 of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0k*,mu:zo zcqa, o( 1toxu(qw9, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is at( oo 19k*z,mc ,uzxq(:qouw the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3-oi3,+/ 80buq itq hxer )uaqc0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on therqihu83aq) 0ti ,qob /+xcu- e 5.0 nC charge?

  Three identical charges of 3.0 mC are placedb6 uqhl 5 ljf:q73c,pdyvu .1-o;bjk8vw3zlx at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any b ;j.7w,yd1f 36ql8hl:cuu zojp-vkbq 3l5xvone of the charges?

  Consider point charges of +Q and +4Q, which are separated ba8qi m( 7lwk(9- bzqd, odf.uqy 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 electrosbo (da,qq7 q.dzk-u9 w m(if8ltatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargnncip,ns6y5)z 2s jt-e is at x = 4.0 m. Where on the x-axis can a third charge be ) ,2tpins-5nz sjyn6c placed so the net force on it is zero?

  Charge +2q is placed at the origin and4c o+m: t pazwljb*lzw;9b:8 g charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thatz:b;m:4g jzwlb8wpoa 9l +*c t the force on it is zero?

  A copper penny has a mass of 3.0 g. A to00heq on0d nd:o5ryy mq17 wq+v;b dti5kk.,ptal 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 tha e, 8xssr1bt;vqd:0xr hct,* e attraction of a fixed proton some distance above it. How far above the electron is the protsxqh ;r*a08,tex v ,tb drs:c1on?

  Two 0.20-g metal spheres are hung from a common point by no3c3fj 6vcvjp,7yyh0 n;x 8dfb nconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the7 bj3yvc03n pvfyj;6f d ,8hcx angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chhmz8z0e6q+z r arge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuszqz6m0he8rz + ?

  What are the magnitude and direction of the electric field at a -3mp l)8slcs ry )sqx1distance of 1.50 m from a 50.0-nC cls- xsm3qcpyr )ls1 8)harge?

  A 5.0-C charge is 10 m from a small test charge. We, 0m)f ifs.exhat is the magnitude of the electric field at the location of the test x)s .if ef0e,mcharge?

  A 5.0-C charge is 10 m from a small test charge.(hux ssyfs3* +z2-cmt What is the direction of the electric field?*fs(s3zt +x ushm2 y-c

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o* fog ;im6 gru+zz8z3sf the force experienced by a 1.0 nC chargez8r6 uo gmgsf*zi+3;z placed at the location of the test charge?

  Two point charges each have a value ofwrfo2bp0 xs;wy 8. e;b 3.0 C and are separated by a distance of 4.0 m. What is tb80.bexo;pw;r2ysf w he 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 -4.0 m 5:7mq w:espin px72s,o7fplj8 iu4wl, h4wplC charge is placed at the 50 ces np il4 ,7s874lmlu:,j5pp 2w7f :iqhpwwx om mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCp/fkii04h1, / g/xwtwls9dn t charge is placed at the 50 cm mark. At what point on a line joining the two chargeslg tit/f9h/kpx 0 s/d w1wn,4i is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are d; 7c86 juv0zdt5 6yxdes3xkhplaced at x = 0 and x = 0.20 m. Whatz386scdx v6dxdueyhk0jt ;5 7 is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o i - ti(isql+4ish7vjl c--d2s9lxrq, f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric frx,l ic( sv9 4j-ql7sis l-qi2di- t+hield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co -s9mzbe9iw f cw7 fdjwxxc)) vfyw55lb6j1 3)rners 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). Whatjw)wm9)vxx1zci5w c)s3ffd7j-elb b6 f yw 59 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 s.ph f7o//35jiz/b/ gqp)dgt +cl ntj placed in a uniform electric field. What is the maqt jsg.ihp7jbg/ zp5 )// / lctdf3+ongnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass/ lq/392 mmkokkq5 ntc 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 placet u3* +--o teq)qtrgwtu v/.bed in an electric field of 6000 N/C pointing downward. What charge must be placed on th*3. bu- tqq )/vure-oe+wtgtte ball for it to be suspended?

  A foam ball of mass 0.150 g carrwzfp,u ti-p ,.ies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against tp,.- u,pfz itwhe force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnit40*gsd0y)b zw dbdk:qn2 wnx1* /ny arude of the electric field 5.0 cm from the sphere'bn*d nr04*2y d1n/s0: d)wyz gxkqabws surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 -/et/wm/ ) xjvxmec j0mC. What is the electric field 6.0 cm from the center j- m0t//x jx)/ weecmvof the sphere?