State the law of conlqw aj )umx,u*76wz5dlig /+oservation of electric charge.

  Is it possible for two negative cv8wh)qz)9l/ v2o;5mcj e)6p ksfcyze harges to attract each other?

  Is it possible for a posiz8h* 0tc en: 0pvrept6tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thg in,(v(.4g;tat i; v4vywwm ke glass rod acquires a posit vikw(a(n;,gg4i;v w4tvy.mtive charge and the silk

  A proton carries a

  The model of the atoa r5 /jj:kza( hypze9:m shows a

  A neutral atom alwayw:;b7g x6kmir e6ac3 vs has

  An atom has more electrons than protf/v. ;fc9vg3o+og hy tons. The atom is

  Materials in which theu06tzf14 svb;d1ql xn electrons are bound very tightly to the nuclei are referredz 04lnds;t 116fvxqbu to as

  Materials in which the elcr;bn 83-ha/6ns odze:c vpr, ectrons are bound very loosely to the nuclei and can move about freely within the material are -vc z68:nb3rcr/s ;hnod,peareferred to as

  A negatively charged rod is brought near one enl+w7 zlc lf39id of an uncharged metal bar. The end of the metal barwcl lz3 i79lf+ farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plan( id 4ttzz:7nced near each other o(7z4z dit nn:tn an 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 d2.ox g(se9dejc ly(6ively?

  An originally neutral electroscope is briefly touched with a positn05liwfs u:sw*ckz 7;ively charged glasss zw:;70kfnucs* 5liw rod. The electroscope

  An originally neutral electroscope is grounded briefly while a po85 tg+mpr2fhpv6 (mbmsitively charged glass rod r2mgmfv h5t 6ppb(+ 8mis held near it. After the glass rod is removed, the electroscope

  A positive object toucf p9i/1 8dcvgl-lrat ;hes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscop l -idcf/tl1;agp8vr9e, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. wsymrmv-h v a,)1+eq 7 A neutral metallic ball rolls straight toward the oh1 vrsm,q+7)eamwv-ybject, 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 Coulombm4d: gqqrv6 .ogs2(h v8. slxf constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger idqjw )tfz)8 0mkiuni)tf;) t2n magnitude t tn)8ji )q;mk0 fiwz2t ftdu))han the second charge.

  Sphere A carries a neh6 j)66gjnelssiby 18t charge and sphere B is neutral. They are placed near each other on an insulated table. Which state)e lh81666jsi bjsygn ment best describes the electrostatic force between them?

  Two charged objects attra tiehdl4-ss +:( qp.efct each other with a certain force. If the charges on both o-(l+4i.hesqpsf: edtbjects are doubled with no change in separation, the force between them

  Two charges are separated by a t ;yoi +/4muschvvc 88distance d and exert mutual attractive forces of F on each other. If the charges ;ccvo8t /mu 48yhs+ivare 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 for cvd1.kphv(o:ce between them if one charge is doubled, the other cha(vc .h dvk1o:prge 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. W6 uifc/7fe.f)u 1glg +za+dmqhat happens to the magnitude of the forcuc6)/ +fgq 1fdu.alz gmi+ e7fe 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. Whaa tw9:1w5x7bitl ku7 q vrs0;it happens to the magnitude of the force7tti viw97xs 1l;qwu 0ra:bk5 on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separate*+wjk zryu0o9mn:( sn d by a distance of 1.0 m. What happens to thenw+ y:rns9* j0z(om ku size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squg5g vwam-(;f90ht3ci k rc, vzw.f2emare. 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 actingrtagkm 532g wehfw f0mc.zc ,iv9v; -( on the positive charge at the center of the square?

  A point charge of +Q is placed atp c2vtb8);a ts 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 ctap c;b)sv28tenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vem+-t n,u0cdov cc*eh-ctor?

  At twice the distance from a point charbeu 4c)r2u+b)3 s, n.j tko pz55ajilfge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatiq8c3jqwn;5i n h7p3hbve and positivpq;c3 jhw 38niqb5nh 7e charge along the line joining the two charges?

  Is it possible to have a zero electric field d b*vlpq0ff v/6h y*w6value between two positive charges along the line joining the two chargesfvql6hybd 6*/ v pwf0*?

  Electric field lines near psitive popmb)) y2sg jil 9 o++,ciyy(fyint charges

  The electric field s /mrh viygn -/eg ;s/hcn k6(nig8*nr(hown

  Can electric field lines intersect in free s5(fl+: oc4r y.*n5gop k e9o ju5nnmfnpace?

  A solid block of metal in electrostatic equilibr l.lm+*2 9+gtdchy auyium is placed in a uniform electric field. Give a statement conc9+m+yld 2ul* .gatcyh erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal :g0v-hrug1 n + el(cppdiameters are each given the same charge, the electric field (E) midway betwee-(1hrlcg+:pe 0uv gpnn the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regioojg5-gj+2hr2q lyh (k n where a uniform electric field is directed straight upward. What can be said concerniql( yg +hor25gjkj h2-ng the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cbo-vzfj o2 0z5harge

  A positive point charge is enclosed ih4x42pq lr+bfi q y.pw743 spzn a hollow metallic sphere that is groundedqq s2bp r.p +4ylhi3z4f4p7 wx. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties obi7jn)m 9kv . wo7t6(dd:fzqzf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one eleg5p 5hti5wyz+ (oar0n 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 a net charge 4xjds9)hcg r6 of +2.00 mC. How many more protons than electrons does this pcsd49 r )hj6xgiece of plastic have?

  What is the charge on 1rgt/3ot a 9t,+qva9vf kg of protons?

  An atomic nucleus has a cwrmd1b88 s)l fharge 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 values of 2.0 and -4.0 mC; yqw6 +va.mxc, respectively. What is the magnitude of th+a6. ;vqwxymce electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 xyao- s-y ypnpe9c2c.s6n44et1sj; eN. What is the magnitude ofj. t2 --syen o9syp4enpas e4;1xcc6y the second charge?

  Two 1.0-C charges have a force between them of 1.0 N./a+u1ah.igx,j m vvh. How far apart are they?

  The force between a ckyv1z7gd5m0 t)m wa z1i+(sm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a 8lfvxv x- 1sl(0 yqgwdf+y; ar2,enx1part, experience a 1.0-N force. If they are moved-g(,2 1y8vdwqa;e sf1fyl +x l0nvxxr to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of:uvu b /-.qbek 2.0 mC are placed on the x-axis. The first charge is at ve ubq-u:b./ kthe 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 charge at the origin?

  Three point charges are placed on the x-axis. Asi-x t- kv9ym5 charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, 5-iv9mktyx- s 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 the origin?

  Three point charges ayk+*q,7 i agcwn d1d1vb 0xwb(re located at the following 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 magnitudea (bk n 1*bwv+0wxd,ciy7gdq1 of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squareeff2 :;+p t8zyolzg/d, and a second point charge of -Q is placed at the upper-lf:;f /e zpd28 yotz+gleft 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 .5a /07x8tqmymtk0hugm/ on s7ovltd -t(+vi at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tvq t(un k 5tm-yidg7l/0ts+th /o8x7.am0vomhe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.jjb(a ; ;tj5cg30 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 the 5.0 j5 bjj;;gatc (nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of u*cnag;stqqwbn+6 d4i 2wm .5 an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts o5q.;cnaut m*w+snq 64 gwb2din any one of the charges?

  Consider point charges of +qyg;rfu l /0v5ce( 5drQ and +4Q, which are 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 gr;5v/r0f( cldqy5eusuch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +) y d)(elo:yct9.0-C charge is at x = 4.0 m. Where on the o(d)ecy :y) ltx-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plsv-/ig47 jdljup.3lx aced at x = 2a. Where can a third positive char3sx/il.p uv-l47jg djge +q be placed so that the force on it is zero?

  A copper penny has a4hw:/ idc:puk mass 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 avxubt)k:y -k: q :mts:ttraction of a fixed proton some distance above it. How far above the electroyk :btk-qxt:v):msu:n is the proton?

  Two 0.20-g metal spheriiq ) 6m5heo/ a,lqef2/skzg7es are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical chargesok,fzm q76a5i) /g2ie /lqhse, 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 +40einw0o95s5o7r :x ccg/ka n 8bt. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuawngr:xokoc05 cs 7/b59 t8nis?

  What are the magnitude and direction of the electric field at a distance o,+x7w ry6hjza f 1.50 m xra6h7y +,jzw from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. q xy-:u3dlpu1- k2 ysaWhat is the magnitude of the electuyy -s 123l:pu dqaxk-ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire9nxr/q7kk4n 7ia) s pbction of the electric 9q7pr /k4 xannkib7) sfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of k 9kp3ms:e5u vr.*9nm(unpwlthe force experienced by a 1.0 nC charge placed at the location of the test charekmnk5:m prw9 u*v3lnp.(u 9 sge?

  Two point charges each have a 5hd;hy 9ckno jm,;9fxvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinfc5kxh ;9;hyojdm 9,n t midway between the two charges?

  A 5.0-mC charge is placed at the f/zrk 7(hf.xyba-tzlzd:ou,u31 d,t 0 cm mark of a meter stick and a -4.0 mC charge isz,a.-o(d rzb,ffu thu z7yt:d31/kx l placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mars wgwlz2v0p5 1k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. g 5l2w vz0sp1w At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed atym ,t( aqrqhax3x48lf8k6usd,a hk36 x = 0 and x = 0.20 m. What am68tf,s3h 643 qqx a8a kkld ,ryxhu(is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of zrh396pspe48 k; oqolutl).4w7 tah wa 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 the squarepsuo6;t 8pe h ak 3o449w)rtzq 7hwl.l.

  Consider a square which is 1.0 m on a side. Charges are placed sei3a(,/rqru d( i6zpat 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 square's cen(ipedizsq3r/, u(r6 ater?

  A force of 10 N acts on aur/npohi 5 r;(2m rrc* charge of 5.0 mC when it is placed in a uniform electric field. What is*2 ;orimpnu rr h/5(cr the magnitude of this electric field?

  A particle with a charge -d/ek .d9mio 6,ynnke 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 p,0y 1w)jx2axyg,m(v:duoh r claced in an electric field of 6000 N/C pointing downward. What charge must be placedy )d c:x2,v (yxo1rmug j,0wha on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargeuizhcuqnf .gk f;0 t++aa31m( of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the z+imc nf +u(; afhq3t0gk1a.u 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 ma o(a3kbuaepzyi/ 7n//c aqzh,so( (j )gnitude of the electric field 5.0 cm from the sphere's surface(/(z( 7sy,i enaohcq/ /z)oba3 pau kj?

  A metal sphere of radius 2.0 cm carries a charge mtlo-gj m*7g2 x.z 5d*k/bhokof 3.0 mC. What is the electric field 6.0 cm frz dk5h7 *2lggmom./j *-bot xkom the center of the sphere?