State the law of conservation cbtm1t- k-(jwnr7 i(fj ok /j8of electric charge.

  Is it possible for two nykpsw 1m .f 7db m,aqr2:uddv1,n/it6egative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eae9k5j3(q9 )2ag x.lanfjp n9 yxrqnw :ch other?

  A glass rod is rubbed with a piece of silk. During th016p s6 fxzusg,t0a,ez ;q zcon2(flde process the glass rod acquires a positive charge zs0 261(d lp;6fcs,xfnta zoq g0uz,eand the silk

  A proton carries a

  The model of the atom( w4*b lh8zwja shows a

  A neutral atom always hapnhm5zi3w q .t;: 3ags-lr;/h afyap0s

  An atom has more electrons than protop 77au ;i+06pvrbjhtn ns. The atom is

  Materials in which the electrons are bound veo*cuy kk:1 qb1ry tightly to the nuclei are referred t1ykoqu :ck1 *bo as

  Materials in which the electrons are bound very loosely to the nuclei awnvvnnw;:6d (nts/2 knd can move ab /;(nwndnv6:2 tnksvw out freely within the material are referred to as

  A negatively charged rod is brought near one end ofp,;e)o 7.tvp yyyx05w 3w nviy an uncharged metal bar. The end of the metal bar farthest from the charged rod will be oww.7yteip0y5vy;x , n3 y)vpcharged

  Sphere A carries a net positive charge, and sphere B is neutral. They 9d)srx;0whh0 ; byfjm j(nw m;are placed near each other on an insulated table. Spher 0whj ;)xb9(0mnrdmwyhf j;s;e B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha cbi/ vm+e ,:pg8pbp-srged rod charge an electroscope positively?

  An originally neutral electroscope is br-o c1ffqa +evmqw a fu9ea7 y4-gy8*-kiefly touched with a positively charged glass rod. The electro1-a cfmyoku74f*f+ -e 8a9wqgy -eaqvscope

  An originally neutral electroscope is grounded briefly while a positivel k2 2-zztttw+vy charged glass rod is held near it. After the glass rod is removed, the electroscope vz tk-wztt+22

  A positive object touches a neutral :1x2sua2 br54aen /-lyuj7r 6khbishelectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What has- lysku6 rr7i2h: 2 hjb4bx5u/na e1appens to the leaves?

  A large negatively charged object is placed on an insulate nhpwed;ik/:qx-yb l:*i,j3 ad table. A neutral metallic ball rolls strpy:*axn/k :;wb,i-ljqdi 3heaight 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 the5 143.xzjvl;a j jzyzk Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanh b+(- mssb+r s z9+wil6-)we-zumizqce d. The first charge is larger in magnitude than the -ezssirswuh -)6z( lwb 9qm-+mz+b+ i second charge.

  Sphere A carries a net charge and sphere B is neutral. They arvksrg fdn 9:9f5ggx /r -:lny5e placed near each other on an insulated table. Which statement best describes the electrostatic force betw/sgnyr 9 xfng 5 :dk-f5lvg:9reen them?

  Two charged objects attract each other with a certain force. If the chargegc1mgxl43 pn; s on both objects are doubled with no change in separation, th g;mlp1gx43cne force between them

  Two charges are separated by 7ybww jcfoi9 x-(5/iy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distano(5 -i/bfywjc7yx 9w ice of d/3, what are the new mutual forces?

  Two charged objects attract each othl l.xzt7 a w0w677 heobad4tw8er with a force F. What happens to the force awt6bto w 847e7.x07 dhaw lzlbetween 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 is now equal to

  An electron and a pro k.c*uj;8 efdzrz6*v uton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electc ;kd68jr** zvfeuz .uron is placed next to the first electron?

  An electron and a proton are separated mz0sq7, ejomhwcqq3mez58 7; by 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 t qm0 5qzezsw7jhmem; qo87c3,he proton?

  An electron and a proton are separated by a distance of vmcv5x k,lb b gw:h;or037(co1.0 m. What happens to ,7vh 5o0w(mck c3:ogbxbr;l vthe 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 square. When a l 0h: v vvt2e;z)zg(mpsecond 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 center of the sqe)gz 0;lv2 vpzvh:(m tuare?

  A point charge of +Q is placed nk 776 ngkz9 5 vmhk6/ro359prrxgpel at 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 center charglv6x7k99n/km5h ogp7 rrpn z5k3g6 r ee due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a wxs5c;x7b 9/ ohs )nzxvector?

  At twice the distance froci 3n jr(h8-qam a point charge, the strength of the electric field

  Is it possible to havef tr8vjh m33 9t/-jman a zero electric field value between a negative and positive charge along the line jr-8jtnv9 j f33mh/m taoining the two charges?

  Is it possible to have a zero ele q:s r7(s24od4rcdtuc0fz* hcctric field value between two positive charges along t2c0cz*cur44fr(o ds s7:d hqthe line joining the two charges?

  Electric field lines near psitive point char swje)ct;u 20tges

  The electric field shknfb+0 hnee 59ygu (,a t28pgfown

  Can electric field linesdjy4n3t+/ 5 tvlbj,en intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni* oduw8z.dm+zpm5t/ x xfzy6 5g pf)x3form electric field. Give a statement concerning thezzgx 3*ffxu y5.6m tw8p)+/om5p ddxz electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are el rx7zri :gs8j(b 29zqach given the same charge, the electric field (E) mid srjqr89l(i:b gxz 7z2way between the center and the surface is

  A cubic block of aluminum n , :.htzlp fd8vc,io)mt8qd2 rests on a wooden table in a region where a uniform electric field is directed straigmn 2)pq:c,itd hv8l8.fdo ,ztht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equ) ex-x le uen,9d;4hoiilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere84hmqn7 u vo2 is/c34qa idqx1 that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the ho dcim/ihs qu q24 n34oaqx187vllow sphere has

State three properties of conduc70,7w yvdn6zwzn fmo(2e4u nuk.0 pxa tors in static equilibrium.

State Gauss's law.

  The charge carried by one electron57kfv guv,x/u 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 mv0o+jy0mx2v charge of +2.00 mC. How many more protons than electrons dm2v 0j0 +yvxomoes this piece of plastic have?

  What is the charge on 1 kg off(csa.t z;cc; jtx4db+ xo p82 protons?

  An atomic nucleus has a 8cvzx5jv/2 bwu;b0rq, adynp h3+rv.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, have charge values of 2mqb93 m b *6vigcjub,e2a /-in.0 and -4.0 mC, respectively. What is the magn/cbi uqgemi,*6b-n2 b jv m93aitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw*2f:2dlv yal t eljq44een them is 1.0 N. What is the magnitude of the second 2y2e:d l* 4qftljv4 alcharge?

  Two 1.0-C charges have a force between them of 1. 5mo9 1li*rwh rs-n7ae0 N. How far apart are they?

  The force between a lza-pdhc ge,w( tl1 l j4/wpdj*c,0/l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 geay(i.)k7e3 cvy ve/cm apart, experience a 1.0-N force. If they are moved to a new s(/iy)v 7v.akege 3yce eparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axisvh. 83zgv+g/avk v,hz. 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 . v / 8vz+avgv,hhg3kzelectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge ofruxhxv uq2g2r0-* +nb +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 02hb 2+r*xnur-xuq vg direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2cge q* 05dqcs8.00 mC at x = 1.00 m; Q2 = 3.e cdscq*g8q0 500 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 of72 qfs8-vc)mud .ycrv 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 positiv2rs vcmfqd y )-8.v7cue 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 = -1ab;c 2h(c7;hjim8ul h.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0m2ulh;i 8 h(hc7bca;j nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 j s;q39)d- xzpzh)gdwg tk9;w;rr7jg(lud h6 = 5.0 nC is at (0, 0). What is the direction of the net force ontgzl hrh)qupsdg;g;6 dd;7 w9)kw-3z 9j rjx( the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil5m xb;sazm )r5ateral triangle which measures 30 cm on a side. What is the magnitude of the el)mas55r zb m;xectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are ;u ma ds;,ebicx2twhj) n)1n wh( a(,sseparated 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 elect(cdm,2j;)w un (w,s;basathx1i e )h nrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =p.s; fkyqkejq81 882lm l2vt q 4.0 m. Where on the x-axis can a third charge be pqjk.1l;t2kpys8 e88fqv lm 2qlaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl97xbs ;q/4svo ft-o wkaced at x = 2a. Where cano9 otb-/7k vqwsf4 sx; a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of hi70 oil94j,ryzl:pj 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 forceq40ee)paq/xt9kci g0ul2dxpc : 6 9 t cn(w)qz of gravity by the attraction of a fixed proton some distance above it. How far above t(ck0eplpcqnz9qgd t4u xt9i: )/6 q2c)ew0 a xhe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaz2s xd05g0zy ni:fv8mgf5 iz -ds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them -v0f0g:x ymzdnisg5 z z25 8fiapart 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 magnitu tz2 b lgx+t03kd7,mmyde of the electric field 3k 0xlz2db,yt7g tm m+at a distance of 1.0 m from the nucleus?

  What are the magnitude an3peb;(/ej i b-jf-xj7 y6gjljd direction of the electric field at a distance of 1.50 bj fy-bgj;7jep/ 3j-xe (lj i6m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a3ay 3md+atd9mi.o)nia9 x 8m : jwmzd- small test charge. What is the magnitude of the electric field at the location of the test chargn3 adm8i)9d93+j.- omdmyiw z xamta:e?

  A 5.0-C charge is 10 m from a small test charge. What is the (qyn x-kf s0o0r( p .(xqfue-odirection of the elecon( uk- yx(0(pxoqff.erqs -0tric field?

  A 5.0-C charge is 10 m from ughj*h.exz8qj:gq ,u,b - t;fa small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the lo-bq g*tuj g;q,huj .,xe: zhf8cation of the test charge?

  Two point charges each haq9le :kn(8 pggve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiel(p n9 8eglqkg:d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofv:jq7tb 1t;hop qxy s8y:st7, a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c :,spo b7;:tt8t7qv1 y xhjyqsm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.hui: elh x5z(;6u gnm,0 mC charge is placed at the 50 cm max5u h,lmhz (g ;uie:n6rk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7oz ,-kxg: 3:th/,v(j qmnepax .0 mC are placed at x = 0 and x = 0.20 m. What ioqvpz(x,: xhat:3kj- ge /nm,s the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corfnsl 3:9m ibw:ners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electr:lsn 3fi 9mw:bic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placspe c/4 pl-l.e;p-fgjed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 / lgepjlfce;.-4pp s- 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 as.4wr+w4 uvc charge of 5.0 mC when it is placed in a uniform electric field. What is the +vau rs4wc.4wmagnitude of this electric field?

  A particle with a charge of 4.0 mC has a masl9yxcm)0eeht 75 ;nd rs 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 in an electric field +lm ,; n) sxbps(ydt t.ld5 bb3gvb93d 4d4bgxof 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspende+t) dg4(v b.;by d3s 9b3xtngslbm5pdx bld4,d?

  A foam ball of mass 0.150 g carries a chf ;.kj0 r* *8ms0jn8n ryys3mljbf v8earge 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 el;0 fj3bnj mfs8se r*8nrk m*.vjyly80ectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is th:idpbo4k (o.ze magnitude of the electric fbd k(p:.zioo4ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eleyx i:nbfu5r7: q,vmt95nm y3pctric field 6.0 cm from the center uvr:n piy759n:5 btmfx,3myqof the sphere?