State the law of conservation of tfslzj( gs6vrmmjcd5o;m,x s ( ,5u 49electric charge.

  Is it possible for two negative charges to attract each o3ptl)g*c2 8 8- wuavgacvn1 xxther?

  Is it possible for a positivc api7wupeo:c7r9:+ub (xe9we and a negative charge to attract each other?

  A glass rod is rubbed with a piece of si-w f*7d y;rp ptivp6bwps 6sx1e9q9 y7lk. During the process the glass rod acquires a posiy*q iw sw9vypp d7xret19 p7-6fb ;p6stive charge and the silk

  A proton carries a

  The model of the ato pihb:yukmd. z+ p9pf )v(vjcl6;+nm3m shows a

  A neutral atom always hasonwsxz6isl35s6 1yu *

  An atom has more electrons thapk5* h mr.-5jubt 1bwkn protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are zf1vgd xf* ugi88ru 49referredd8x4ggfu v1i9 *fz8ru to as

  Materials in which the electrons are bound very looseg )uz;+47fsj(wcvouxye6; lt ly to the nuclei and can move about freely within the material are rx f;+u 4otygvw 7e;6s ucl)z(jeferred to as

  A negatively charged rod is brought near one enduj.4:ntsa)f j);1v d zl1eze f of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be d))aes f1vzet zn:lj.f4 j u1;charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla. fmgm +x5)acwced nearmg)5x c .maw+f 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 charged rod charge an electros4,njevjqh tj( 7 3st7s37x9+ r yjoycicope positively?

  An originally neutral electroscope is briefly touched with a positively h9p do2o* kcy69 jh7 +13h mkyvkbk:jvcharged glass rod. The electroscoo9vy 9 jm7v6y phkk dbjo*k:+hh21 kc3pe

  An originally neutral electroscope is grounded brieflyivn 67 v(;xndf while a positively charged glass rod is held near it. After the glass rod is removed, the electr(6f 7dvvn nx;ioscope

  A positive object touches a neutral electroscope, and the 7aj : yufb77vt;9pt rdleaves separate. Then a negative object is brought near the electroscope, but do;u7tryd:t9b f7v7paj es not touch it. What happens to the leaves?

  A large negatively cz;0h-7g8y36 cqhpqrp 6z aj yiharged object is placed 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 either ball touch the negative object. Whcp y 0ryia q8;gj6hzh-q76pz3at is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 0 k leu2;6m eawiu)5-:qxpeyzconstant $k$, which appears in Coulomb's law?

  Two charged objects are se)hhm 47jt/e5qp ivszwg hf (+6parated by a distance d. The first charge is larger in mag zve5 g+ifh4/htm) sh(6 pq7wjnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nxvp zsq5c- w :+ck.m8wear each other on an insulated tap5v m+:8. zkws- ccqxwble. Which statement best describes the electrostatic force between them?

  Two charged objects attzw gxkp.je3z-ie** b , b:ys7iract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force:e-z .y ,e*sjb37kg*pxzb ii w between them

  Two charges are separated by a distance d and exert mutual - vr;(tpxy :nuattractive forces of F on each other. If the charges are separauxyp:;-n vt r(ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wi8 b3loxf m14qath a force F. What happens to the force between them if one charge is doublf4xa38b 1lqm oed, 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 ar 0uu. iga+.rh/xzbh4x by5o/qe separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elec/uuxrag h.0by bi 5/ho+.4xzqtron?

  An electron and a proton are separated by a distance ofhvxbllgf;46ac7 ki nsze3 7 /7 1.0 m. What happens to the magnitude gfev;bal7c n37khil67sx/ z 4of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are szjc :x7vq op8 *f)wp4ceparated by a distance of 1.0 m. What happens to the szcpx 8pf:wo*7)v4 cqjize 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 aw u9 qoie4 dfx93rt/d 7ligs pc9;/yg- 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 t49do qcrswgf-iplx9d 73yi;t ue/ 9g /he 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed aj a;r2yb6* wbct 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.jw6bb cy *ra;2 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 vece4b//xu6nye fjt :f,ltor?

  At twice the distance from a point charge, the strength of thedeah 1yth+vg0i*50fs electric field

  Is it possible to have a zero electrice fqyjy)k8j5q8tssr . xg .p9+ field value between a negative and positive charge along the line joining the two charss.xq q prj958.+gje y fk)ty8ges?

  Is it possible to have a zero electric field value between two positive charge0nt vw) i731oyjwmmhd;- r3n ks along the l3mjrtn3;v y1iok7 wdm ) -wn0hine joining the two charges?

  Electric field lines near psitive+as:x c,v igb d*09nm:tiw v pimi39/k point charges

  The electric field shownhb(0wgu e 9x wawu.nj vz2lws/30:9fs

  Can electric field lines intersect in free evff.a/5b brz itam51hu/4 6i0y p/sfspace?

  A solid block of metal in electrostatic sj3(c0w17yzrie jxy* a 5jd+ vequilibrium is placed in a uniform electric field. Give a statement coz3 *ejx ys 5y7dc10(+iwvaj rjncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal s9jy o57twhq-d-g m +;rck 4gor.-jbia phere of equal diameters are each given the same charge, the electric fie -qb; 7d4r+wayjiko - 5h9rgtom- jc.gld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a j/x dzu,fwh:3vpy(c* region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's tchw:jx3f ypd*( /,zu vop surface?

  If a conductor is in electrostatic equilibrium n7th;u+(y2wgm 0ud *v4 ld puqnear an electric charge

  A positive point charge is enclosed in a hollow gz /u(pmv1vzkc7/j,w-ag ui ;metallic sphere that is grounded. Ai7uzw1 /mvjgpac zgu(k ;/v,-s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducty w 6;mp7(oqcf0z -6 ggf/fdwoors in static equilibrium.

State Gauss's law.

  The charge carried by one electr d5ibx)cgq f:7on 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.k.qtlf-so(du ,nzg) -71gex6sts4 tx How many more protons than electrons does this piece of pla1t7s4e zf)ss,nxq.od kgg6xttu l -(-stic have?

  What is the charge on 1 kg of protonsh m91694w m:ktj xhpl3a6mpcc?

  An atomic nucleus has a ch9yj2col w/a jyvky,n.ifi34- arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separeft*ma/(0 azwms( gcnnwe268ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between ta( /6mzfw*0geat se( ncnmw 28hem?

  A 1.0-C charge is 15 m from a second charge, and the force bet)psn3da (t8 qaween them is 1.0 N. What is the magnitude of the sec(3 dn a)tq8aspond charge?

  Two 1.0-C charges have a fznu2chqt/3z:ijk;5(,yw uj gorce between them of 1.0 N. How far apart are they?

  The force between a fe)tyv+1b8 ; x5 vly8 qjot4dj$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini 9t5eq *plzy*atially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separatioply*e5t* z 9qan of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ar1wdoap4so kl35q:-y x e placed on the 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 magnitude and direction of the electrostatic force which act-oxyw:a1d3 k pl54oqss on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placedjblrvi+ ;7jfn g)gs0 z: wb.9*x;ilxr 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 charg*b0xzx)i 9j:wsi ;r 7frj+.gl ;nblgve at the origin?

  Three point charges are located at the following positions:yc;mp(6y 9xovs vf 5d8+ql0ik Q1 = 2.00 mC at x = 1.00 m; Q2 c yiv xm9y6fd(sk v+;50p8oql= 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 plac0 m.3kgkz2c omed at the center of a square, and a second point charge 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 forcog m .ck20kzm3e 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 tewquadk4s6y--n+/pb p.ni1 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudenwspu/ n y-d.kbiepqa-t46+ 1 of the 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 = 5.0 nC is afh .h6ewre1za:7y va/ji6l( ft (0,fa1vze /fr 6hl 6( yi:a.e7wjh 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 ve5f pze.sd(76b;lz7cf:sl r13saczrfrtices of an equilateral triangle which measures 30 cm on a side. Whr ap6flfzfr3sssb. dcz5c;:z7l 7 1(eat 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. At whato7erag4igf qy75cq: .6 kk g/e 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 bkyki6ge.f g a57q7:/crqo e4ge zero?

  A +3.0-C charge is at the origin and a +f+z. qfq/j57+nme4j5 w efcbjv g(0eu9.0-C charge is at x = 4.0 m. Where on the x-axis cmvu/4 g +wb(n57f5jqjecq jef e+0zf.an a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placen yc 66hfktsk.6i7klf4k6i d2d at x = 2a. Where can a third positive charge +q be plac6 .k6 4idfl7nkks 66i2kctf hyed so that the force on it is zero?

  A copper penny has a mass of 3.0x/pg66j6n+6ayo,t fq c2 nc jx 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 cd7yo4z7*9pp oepv/(zln(zg + g8j iq attraction of a fixed proton some distance abopop97yz8lc zo nq7g/jz+* g4e(i pd(v ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thre .2*l,3or bf)eeijv nrads which are 30,ne.) evlorj2*rif b3 cm long. Both are given identical 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 chaf2c , l *3 qvyfd4n1 xi9m)nlj-ndpyp/rge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro2 yn nlq*nm j-v4c3pdp9fx1/ild)f y,m the nucleus?

  What are the magnitude and direction of the electric field au)- u4oaxkf2:jth)h3b6k f8la0gz n:n ow6fc t a distance of 1.50 m from a 50.0-nC charf boux chf36nfwaa) :ng t6j8 k0)4lh-z2ok:uge?

  A 5.0-C charge is 10 m from a small test charge. What is ther z-hc9 n:g mr3-avdk0p,;oln magnitude of the electric field at the locatilh n90c,:a-;p r3-rzom gd vnkon of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directi+vgn sh7c,qvsa dpi- z+,h87won of the electric fi zvdc+s-,,77w qhv8+snpg ihaeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t/eryz a3 d9,wjxw x o*1o.,xaehe force z9exx *r ea,aydw/3x,j1 woo.experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges ealr)sa/l (yp9lqs6m y 3ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwayql6rps 3ym9)(/ya lsl between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge e)5wx+uub1zpp-sdfj .eb: ;h is placed at the 50 cm mark. What is the electric field at the 30 cm marbj pe;1h s5dw+bzeup-xu ). f:k?

  A 5.0-mC charge is placed at the 0 cm mark v ;5k*q/yf kvkrfb. 9tof a meter stick and a -4.0 mC charge is placed at the 50 cm mr9kv.f 5/kkby; fv *qtark. 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 o1zh 0+dbg3dj are placed at x = 0 and x = 0.20 m. What is the magnitude of the elec0gjob dh3 +1zdtric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squaj. 8izmr 3p)weg t),hw x4u tmu::k-fbre of side 0.50 m. The last corner is occupied by r4, m8. ::m)jpx-fgewu)thzti k wu b3a -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 arees*03* l+ st *r.z ylmlt.gw(nx9q uvz 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). What is the magnitude of the electric field at the square' m.0urts.qse*(3nl *tzwlzx*y g9lv+s center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in ar(mr /ivgq +;urk4*pz uniform electric fielm+kg;ru i rqv*/r z4p(d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC 4+g qxtizj1a d.-eek;9 m av(:b,cidwhas 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 gxj.9 dye19.; ele xpjin an electric field of 6000 N/C pointingl x;yegj.xdj e9pe91. downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cml(c-/.n khnkb(r mym14d m( garries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric -myln r(4h(m 1(mc b.gm/dknk field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thef ,t(qdw; x*qr/mu2 fh magnitude of the electric fieldq;/fmq hxr(d*tu2 ,wf 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cass gu(p56r( hprries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphers g 6(p5rhus(pe?