State the law of conservation of electric charge.886kwj v-niz v

  Is it possible for two negative cha3sc.ed,9f45l;fvkts htqj c 4rges to attract each other?

  Is it possible for a positive and a negativei*dl(:5fnm d f charge to attract each other?

  A glass rod is rubbed with a piecp)k2+.xjf,yomc4kl , dt +tzur vl/ q-e of silk. During the process the glass rod acquires a positive charge and the silklq to+ l.f4,,- 2dzm/r)+vp yjxctkku

  A proton carries a

  The model of the atom showstkn osshjvpa ,v53-(un o,s* 8 a

  A neutral atom always u20h )vl-ugeeyu8thec75- u 4etjyegj..f)p has

  An atom has more elect5 5,. lfysj+y6lwx bnmrons than protons. The atom is

  Materials in which the electrons are bound very tightly tj9mfly-i 30hi o the nuclei are referred to asi ym9 hjf3l0i-

  Materials in which the electrons are bound very looga0eoebv,*q qb t7xo/7b no2l z+z0 x)sely to the nuclei and can move about freely within the material are referred tb7e obzxe+aztq*oln 0,o b/)v q72x 0go as

  A negatively charged ul1zl3;tdbz q+mjv *-rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charge +ljl ;1bmz*dt-uvqz3d rod will be charged

  Sphere A carries a net positive charge, anl 7kmcs xw7)p3d sphere B is neutral. They are placed px7)c s7mk l3wnear 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 electroscope po0gil s;t9 hluy hyu;y*4t ./xositively?

  An originally neutral electlt/;vegh6 9 vttj+6qqt3qk6w roscope is briefly touched with a positively charged glass rod. The electrosgtvt 6 vk ql39/eqj;t6+whq6 tcope

  An originally neutral electroscope is grounded brieflyx j6rm r/ngfm,l)5 ei6 while a positively charged glass rod is held near it. After the glass rod is removed, the,)g6jrlim 56rmx / nfe electroscope

  A positive object touches a neutral electroscope, and the ll-5(sc8yny wyf v5+ggeaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happe(v5snl8c5g y y-+wygf ns to the leaves?

  A large negatively charged object izm 1ta)8 n2qris placed on an insulated table. A neutral metallic ball roll i)tz82nm1 arqs 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. What is the final charge on each ball?

  Charge is

  What are the units of the Cou:pigg3ha+ x3hlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fdu5z isd1xyn 3xzv */8irst charge is larger in magnitude th13/in *5 xds8zxvy udzan the second charge.

  Sphere A carries a net charge and sphere B -uiwj kn;z+lnnn487gmya4 ((jix1 oiis neutral. They are placed near each other on an insulated table. Which statement xo na-i1wnz;(nm8k ( j i4yig4+nj7lu best describes the electrostatic force between them?

  Two charged objects attract each other with a cert8/bqrqv 8 5m.qckl oi1 0cpwg0ain force. If the charges on both objects are doubled with no change in separation, the forcewcb5o1 8 gm0v8iqpcqk /l0r.q between them

  Two charges are separated by a distance d and e s2xmju;tz8 un;)p3qpl yc* +uxert mutual attractive forces of F on eachu;u+ ljscqy;n um)z83 2xpt*p 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 cul:* sq.n0ysF. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers .sns:qc *uyl0 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. r 9mi5t 7u;toe What happens to the magnitude of the force oui;5t9oe 7trmn the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated b6gvn2xm8 5giyy a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protonngm2vx i8g5y6 ?

  An electron and a proton are separated by a distance of 1.0 m. What happens 6hsi .xsd/jw rj, j* 2id6ikq1to the size of the force on the proton if the electron is moved 0.50 m closer to the prosd* dq. 6, hr2w 61sik/ixjjijton?

  A point charge of +Q is placed at the e bc87d d4z+cwcenter 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 at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the cen 74czbdedw c+8ter of the square?

  A point charge of +Q is placed at the centroid of an e7n ayhc v5)h/ikiz: jj//;nubed-)mmquilateral 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 thi )nvi7/j: -jy chzim/ nuebma/5dk;h)rd charge of +Q placed at one of the other vertices?

  Which of the following is not a vectf ;.++2+tkeedg nws bv jl6b(oor?

  At twice the distance from a point nb60: mk4 6lez4uu adlcharge, the strength of the electric field

  Is it possible to have a zero.qzd*yw/ bj wok-bqt- 4r8ee (me00zw electric field value between a negative and positive charor4/j b- 0-zewem.wqz 0t(8* wbeydq kge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges q.qyr2 ./-mgege e ;ghy 1y7sialong the line joining the two chares.yq;hgmygeq1r/y.- 7 gie2ges?

  Electric field lines nea s4q 41pu n3vkifo+ukiq;)(qo ;wc.z kr psitive point charges

  The electric field shown bud + 9nd)f(fq

  Can electric field lines intersectd06-bjpdbi -e in free space?

  A solid block of metao6)i l9wbd.bu l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiel.bbl 9odu)6iwd in the block's interior.

  If a solid metal sphere and a hollkhj.rv n jo2,4n535 gl ,i+cqxld h3tiow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the gq34hnxrt ,hk5nvc li,+ j3ldij52o .surface is

  A cubic block of aluminum rests on a wooden table in a region wh/jdd,cc d;.law*f 8 eeere a uniform electric field is directed straight upward. What can be said e. a8f dlwde/jc;,*cdconcerning the charge on the block's top surface?

  If a conductor is in electrostatic equi:-w: 42k,ftbu;kixtw w in;jslibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spci7i,xhiu ,igm);h b; +di5 ythere that is grounded. As compared to the case without the holg ,it xibiyi75h;d,)mh+ i;cu low sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in--: ttds31.tvxzl;zztt g7m k static equilibrium.

State Gauss's law.

  The charge carried by one j8,oj-pt++p1 ;in mnqghu 9)zisuwh :electron 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 +2o o2f)tw )m1dd.00 mC. How many more protons than electronod2)m1ftd wo )s does this piece of plastic have?

  What is the charge onxyp1klu vd,*( 1 kg of protons?

  An atomic nucleus has a ef yxi18i:)csi ocp,0 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, havce8lct0 0 zho)e charge values of 2.0 and -4.0 mC, respectively. What is the magni0ct0oe l8 )chztude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between theminfk :mmt17qhnqy/v; kl mh12ixg1 op13p 9( d is 1.0 N. What is the magnitude of the second chargemh1 : 1 q3nxfl91i qtivkhg1o7myn (;/d2 pmpk?

  Two 1.0-C charges have a force between the tzx29-p;f*ty4qus q pm of 1.0 N. How far apart are they?

  The force between a 8x,x x9ywc8 zbxbq8f0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, innj4j8f3z f 2,z6oom,w i 7uekritially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation o6ojz7f o4nik 2,,8mfe urjzw3f 8.0 cm, what is the electric force between them?

  Three identical point chq/z hb1h o,k l7hva( 4wsax )(y514uowcvgx 3garges of 2.0 mC are 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 wyosw u41,z/h 5hqvaxa( g1hxl c4bvo7(g)k 3 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 mC is placy 1+.w*3 bemtmu 2 z5k hifa;wwp:-defed 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 52 3z bhmw+ dty:-fefkwwaip*m eu.;1force which acts on the charge at the origin?

  Three point charges are located at the following positions: toz3k54qaa k3.6c ph kQ1 = 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 magnitude of the force on th5 6kha 3 zkcp.k4atq3oe 3.00-mC charge?

  A point charge of +Q is nylc c5km*,3jjybp 7lm(7 mh;r *:xk pplaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed 5hymlljcc * , 3mn7(b*7r px;:k kmypjthat 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 (0, 0.10 m); Q3 = 5.0 n3ku(o01 .xjsnyjssj5 C is at (0, 0). What is the magnitude of the net force onn0 5 .jsou 3xjks(yjs1 the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.1b*met4jj b9z 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o9 1jtem*bj4bz f the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are nkm,v0vh2 h8 iplaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which anv 8 k,vm2hi0hcts on any one of the charges?

  Consider point charges 2o( yyemusk+mm;;dtz;(,0 bo v m6 pcdof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two 0(mkoy,mod bsm ydvmue ;p+;t(; c2z 6charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oraaool,c8-*px)pa) qpyez:1w .)quce igin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it o a)appa-e z1*c8yoqlq) .ceu x, ):wpis zero?

  Charge +2q is placed at the origin and charge -q is pla pcvt;v4u(e gg;ai u80ced at x = 2a. Where can a third positive charge +q be placed so that the force on g(tp80 ;v;cuue g4v iait is zero?

  A copper penny has a mjngu fkey.8ess,sa -o617q. 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 agai .cr h/*11clo 2srp 5hdcdc;rmnst the force of gravity by the attraction of a fixed proton some distan/cpr2*h;s ol1h mrd5.d r1ccc ce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconh/ q 9cgsmf51vducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repu51hvq/fmcs9 glsion 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. ivhj/.5g g)de What is the magnitude of the electric field at a distance je /d)gvi g.5hof 1.0 m from the nucleus?

  What are the magnitude and direction bbqiyxjo02kx* 3anl6sx .5c8 of the electric field at a distance of 1.50 m frkq. 2*cjlsxy xn0a b ix63bo58om a 50.0-nC charge?

  A 5.0-C charge is 10 m hm.w.v,wia2f from a small test charge. What is the magnitude of the electric field at the locwi.wav,m. h f2ation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th6ul hzgz3 8of8z u+t9he electric8 g38 zzlo+zuh6th 9uf field?

  A 5.0-C charge is 10 m from a small test charge. Whd7 :; kjwfgq .wz4dyg.a6una 1z5z5.lqsn c,cat is the magnitude of the force experiencezkn1;cu: q.dql.5na5 wgsdyz7w , .zf gaj4c6d by 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 di4s8aax *g6 w,x;/v jyfcgdbw, stance of 4.0 m. What is the electricv,wyxj/6faxb;sadgg8w, c * 4 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 mC ci x;(5fv i17u-w:(jovyviewsv ) i:t qharge is placed at the 50 cm mark. What is the electric field at the (1v;isoj -wvvq): v i7uyti5 ei:f(wx30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ,8c xyov7*0z,h mo :tyqrj.y olg u;l;mark of a meter stick and a -4.0 mC charge is placed at thcyqg l,ox*:,8; ;7lmotyhr. zyo vuj0e 50 cm 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 bx0v,o -4 l1vyjf0leb are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwaoejl f-lvvx b041y0 b,y between them?

  Three 3.0 mC charges are at the three corners of a square 6kn mwem3(pt- of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente-m3n6m(k tw epr of the square.

  Consider a square which is 1.0 m on a side. Charges are placed8wy mrx /n, i6as6ewa8 at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (m x w/i8y8wseaan66 ,r1, 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 ar j3n/ n)4dfwi charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of w /n nr34i)jdfthis electric field?

  A particle with a charge of 4.0 mC has a mass cdlf1vn)f :pqpod v t3xj) :24of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electric field o8(r q+qjx kr0of 6000 N/C pointing downward. What charge must be plac k(0q+8jqrroxed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl6(bu g :zyhr vzf-i+:saced inside a uniform electric f(grs vhiy-:zzb + 6:fuield, and is suspended against the 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 -bg6b g+l* ,n3lt z qic*cekb so8,ub0mC. What is the magnitude of the electric fi6gb cq 8zeiob-,tl*k3gbnl0+cu,b*s eld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.a+ cygpmtx*la2s9 wbd;qm2(: What is the electric field 6.0 cm from the center of the sphere?w;a tpy:lmm 9qcd+sgba*x22 (