State the law of conservation of electric char07.yn );ysrw 8ih yge:ypp3e lge.

  Is it possible for two negative charges to attract each othetfojue+e9f,(,i, -z orm ludt tr3r2(r?

  Is it possible for a positive and a negative charge tj82vfti 7 iif6o attract each other?

  A glass rod is rubbed with a piece of silk. Duringsz8 0lto,t7y.f9 kr1bvbv5 x y the process the glass rod acquires a positive charge and the si 1ty8,v b.7xoyrkz tvf 0lb59slk

  A proton carries a

  The model of the atom shows ssldoana tw2*1q8 -o) a

  A neutral atom always/bwu(pxyl *p)a ;c8d j has

  An atom has more electrons than protons. The a0hjvc+ ;l9o3 fgwa2bm tom is

  Materials in which the electrons are bound very tightl 3cl03kuuem uqp 1,bz(y to the nuclei are referred 0mk u,b e3c1qp3(u ulzto as

  Materials in which the electrons are bound very loe1w c a)lgfi5.osely to the nuclei and can move about freely within the material are ri c.f1ge) l5waeferred to as

  A negatively charged rod is brocjw qnpr3,) )ozzc5ra.k ix(fn/-ml;o s5ln2ught near one end of an uncharged metal bar. The end of th l n/x nm5w5ar) l-o3jk2q;n z)pc,so(z.ficre metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive oz500 1z snsyajl1:lrcharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere sl s: y1jza1050r zolnB is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elk. n.h-3zm 76ze fwepuleu.d(ectroscope positively?

  An originally neutral electroscope is briefl e8fwu(1rd(u*wsw yx1y touched with a positively charged glass rod. The electror (y11uu * wsw8dxw(efscope

  An originally neutral electroscope is grounded briefly whi uf5a)fdm 8v(a gmj8q+:fczr( 5z0vgule a positively charged glass rod is held near it. After th f f50+adu)5ga8z vvfgq 8(rmj(u m:cze glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thyr.i+zze mtq/41 gbe nkc+t 00en a negative object is brought near the +c nq0ze b yztrgk4.01t +ie/melectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutraeq p7-.od g4ja.hb9ygz(s)m m l 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. (ead9zymbmjo- 7gs ).qh gp4 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 Cheg0n8y( .fdf5jh1w8w u) ts aoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chaqe xpq +b2*uq-h3yz;a rge is larger i2a +-yq ;3 p*bqqhzeuxn magnitude than the second charge.

  Sphere A carries a net charge and sph2) :bhfndhls q du* h,)lz,c.; +uyh qaicz/q/ere B is neutral. They are placed near each other on an insulated table. Which statement best describes the eleccchf +qu : y*haqz)b/ ,)dqzln huhid2s.l;/,trostatic force between them?

  Two charged objects attract each ymple 9dir62:v 9n: leother with a certain force. If the charges on both objectsree 9lm2i:p:v n9ydl 6 are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mumkr-uox3 c6wun4vp2tbd 6k 86tual attractive forces of F on each other. If the charges are separated by a 2onum63k u64b wrtd c 6kxv8-pdistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with asa7kj12cni.zq -1mri force F. What happens to the force between them if one charge is doubled, the othz ar .nj2i1ck-imsq17 er 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. What happens krl 3jc *m4cvsid9 )1dto the magnitude of the force on the proton if a second electron is placedl49k) rds*di13cmvjc next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happenpm/0wuny,a ,,zr lg9ws to the magnitude of the force,wlzu m a,9pg,wy0nr/ on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wg1p6 el5/ahvjw3v 4wq hat happens to the size of the force on the proton if the electron is moved 0.50 m closervvjhw 41pq5al/e6w3g to the proton?

  A point charge of +Q is placed at the ): d4( duclx51c2cx; 6ncqh n4rjvzvocenter 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 pos6jqcrzv4):c duh1 x d2vc ;5(nnclox4 itive 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 equilatriahkq+ fk.++eral 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 center charge due to a third charge of +Q placed+k k+r.iaqhf+ at one of the other vertices?

  Which of the followingmnvsnmeomn ; dw65s8h)2h 7:t is not a vector?

  At twice the distanc- 3x+eb :3 yyl1h3sevbd7ivl he from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwgj sxfr m9yl*mtm z;3i+ d0/ik jd030keen a negative and positive charge along tij t09k 0lrs;3m3fymdi m *0+xzd jg/khe line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargem-x(qi33tw+v,gy.qu fu z+ w zs alz-zy3(+ tx w ufiw qg+m.q,uv3ong the line joining the two charges?

  Electric field lines near psitive point charge9ly;ox + xt3ons

  The electric field shown yl0+9hdup.m,*a/xfks8c3 tztr b(dv

  Can electric field lines intersect in free s nv()c27ff y9p3vl j:c2bbguspace?

  A solid block of metal in electrostatic equilibrium is placed yoy859 te-x)pqt (dn win a uniform electric field. Give a statement concerning the electric field in the block's interior8 5po-n qt9xy(yw d)te.

  If a solid metal sphere and a hollow metal sphere of equy99jnuwuu2 r *ej p+c)al diameters are each given the same charge, the electric field (E) midway beepywu cj 99nu*j2 )ru+tween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whe 4h/cra rr.pl4jip(f.wfj .4xre a uniform electric field is directed straight upward. What can be said concerning t4frpjrc.ilf4 a(.pw .hjrx4/he charge on the block's top surface?

  If a conductor is in electrostatic equilib+mvp1+jad cj/rium near an electric charge

  A positive point charge m) +by; engcv4is enclosed in a hollow metallic sphere that is grounded. As compared to the c; +cv bng4em)yase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi m .aeemmcxund7tl(6a /*;- rylibrium.

State Gauss's law.

  The charge carried by one electron is15z grv *4k2qhr.e3 cxhnz;zh $e = -1.6 \times 10^{-19} \; C$. 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 modu xgo3. )n8pore protons than electrons does this piece oxu)38. ngodpof plastic have?

  What is the charge on 1 kg 0tlhmr/ 9a0lpoy:e /e of protons?

  An atomic nucleus has a charge 5e+u0aj t:cq hof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 *f)rq/cixjx vy9+ 8zc cm, have charge values of 2.0 and -4.0 mC, respeczixc cy)8*9xvf/jq +rtively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a se)ao+q m; wco*x l4ugzxn2 hy*:cond charge, and the force between them is 1.0 N. What is the magnitude of the wqo:y; *clzo2axh *m4 n)xg+usecond charge?

  Two 1.0-C charges have a force be ,vctz.5oy6y / a(+g9 lrlqnhytween them of 1.0 N. How far apart are they?

  The force between a uxspa d k ki/o;9bsr 7u)-*tjjt861pu$30 \; mC$ 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. j ftvy2 9fv)7)ckr6pu sl;*phg(k;sm If they are moved to a new separation of 8.0 cm, what is the electric force between themk72lsv stfu) g j v9;rpy(pm6c;)*hkf ?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thtk5 r tcnjbg2u-c,k7 ;e first charge is at the o7t c2k tgn;5-ckbj,u rrigin, 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-:hjaa:h lvt 6db/k,5g 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 mC at the 100 cm mark. What are the magnitude and direj: a:/bk hthdg, l6va5ction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mCxa*y7el p.7s*pl6 pk(xm7 enq at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.p77. k(6a x7 p**eq llyepnmxs00 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 8qs 8/me3d gr8jf ga;wplaced at the center of a square, and a second point charge of -Q is placed at thjfmgd;ag r8s8e38w q/e 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); Q2l7cpl kq3:gp v 6q:/ *yqhio-bi70lkp/p 3 ixp = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forc pg37ypq b7q *3pikckpv0lih q: l:6xo/il p-/e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0n);, b/ rhwzgj qk(sx)b6pj -h nC is at (0, 0.10 m); Q3 = 5.0 nC is at )/qjzbnhrgx j6(b -,p; )s wkh(0, 0). 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 vertices of an equi-r7nqdwisv5 w +rddb -p4f;w/lateral triangle which measures 30 cm on a side. What is the magnitude of the electwwv-/5d- r4 dq;fr pw 7nbid+srostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepazt16sxi4ravh t/)vv)cb7 hmz/ 6t,a irated 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 ac7vt)v4i,)zshz m ar xtt ah6v6ic/1/ bting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whs;vh-kz(wzjgi9 t: d:kdn58vere on thehkw;t-z 8(vgsdj:kz5 dvi n: 9 x-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 plqgu h*t2cj*av.0aw c9aced at x = 2a. Where can a third positive charge +q be placed so that the force on it is zeravcajc*wg 0 9* .u2hqto?

  A copper penny has a anbeblf69q03 d 4 q:xsmass 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 t97txz dv97wj3 gqyl 4xhe force of gravity by the attraction of a fixed proton some distance axjt797l z 9qdvg y3wx4bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poin1.g h5 3d ,lnuzq+ -6hynivmpgt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electr ign+hlgn.u6 dp5v3hmy -z1 q,ostatic 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 eleokeq u 2g5 bb1)pa++abctric field at a distance of 1.0 m fro)+u1ob qbba+a 2 5pekgm the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.501m. wl5tm- l *j44 :1vzc,rfwndignbz m from a 50.0-nC cz n5- ftv ziw.44j g, *c1mll:r1mnwdbharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituhto .+ di-s5xdde of the electric field at the location of the test hx-d.o 5i d+stcharge?

  A 5.0-C charge is 10 m from a small test charge. What is the dipnq0(9iys / vn aaf*o6rection of the electricoa n(svfq/0 69piayn* field?

  A 5.0-C charge is 10 md w3z)4rdu1qe9v w*gm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the qmuzrdv e 4*319)ww dglocation of the test charge?

  Two point charges each have g5: 7tk-jjtxz a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between j5tj-:7tkg zx the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charoq )lt6*9m nxmge is placed at the 50 cm mark. What is the electric field at the 30 cmno9) xq l6tm*m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sy3ner 8h /gelds6g+)stick and a -4.0 mC charge is placed at the 50 c)8 /sh 6gslrege+ n3dym mark. 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 at x = 0 and x = 0.20 m. ptrq-bzst1l+h w aln0 2 5gl0* What ahl0 ll*rsb+ n0t2w z g5-pt1qis 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 of side 0.50 m.hq-0+grb qq20 n ddhkq*50nen The last corner is occupied by a -3.0 mC charge. Find the electric field at the center e*g-b+qd0 n0n5hh2q k0qnrqd of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c*yuut* ab u du(mb/.o8orners of the s8 uy.u ubu*abd(t*/moquare 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 center?

  A force of 10 N acts on a charge of 5.0 mC t q0)ux4md) z wnpe+c vs;++ fmcyuiym8/x3 x5when it is placed in a uniform electric field. What is the magnitude of this electric f) 3 8dpx0qs +mumv tfy /im;eny+cxw)+x4uz5cield?

  A particle with a charge of 4.0 mC has xr(0wo: crm*ga 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 placeg0ow 6 xauuoj1 99 :wvs5lz(fqd in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendesoowl9u5 vf( 61 z90axgwuj:q d?

  A foam ball of mass 0.150 g carries a charge of -2.0 - k3w1ykdnmi70 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravi 7y 31dkwmni-kty. 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 mz g:n vu; 5n6/dw0zh+px7zu htagnitude of the electric field pzdwu5 ;:zxhnzvh/6tgu+n70 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. w/ hrbp* 93)io /x c:vixnwij( What is the electric field 6.ic//3n wov*i(x9p:ixw h bj r)0 cm from the center of the sphere?