State the law of conservation of elec1*j)gmc6z nx pjrp(7e tric charge.

  Is it possible for two negative charges to attract each o opcvyaw/u+/xlq2m f3 +ui4c. ther?

  Is it possible for a positive and a negative charge to wm cf8hc+( 0mhattract each other?

  A glass rod is rubbed wi p:ww5ujbm zr;fg01nq 92* cwfth a piece of silk. During the process the glass rod acquires apcnu 9wz2 bjff q g:*510rwm;w positive charge and the silk

  A proton carries a

  The model of the atom*6cyqqm/lq gk/mxr-o ;o5l; k shows a

  A neutral atom always 4cs sighx)cp7 s pojh5.7e/)jhas

  An atom has more electrons than protons.vfwhn )51kd . 0jkw0zl The atom is

  Materials in which theuza9l1v3;op u electrons are bound very tightly to the nuclei are referred to vzo 1ul;9p3a uas

  Materials in which the electrons are bound very loosely to (wt9lospi+ spo pmymn 19;r 63the nuclei and can move about freely wri369y+lw ot9s; ms nm1po p(pithin the material are referred to as

  A negatively charged rod is brought near one end ok h4i(k:wki1 vn6trp/f an uncharged metal bar. The end of the metal bar farthei kiw1 /h6(kp:n4krv tst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They arh.wnkk). s/i7scuwi 6e placed near each other on an insulated skc.nw7ikw .is/h6)u table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod/qnif,9,myf o charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelyji8 r)8q0qof1 hh 6tol charged glass rod. The electqoi6 8l81q0 h)th rofjroscope

  An originally neutral electroscope is groundecu 98d nwjt +wqf (t6w02e0qksd briefly while a positively charged glass rod is held near it. After the gl 86c njet2t kd+q0sqf w9wwu0(ass rod is removed, the electroscope

  A positive object touches a nqu b b/e32 smlx;kb92zeutral electroscope, and the leaves separate. Then a negative mx;b/bbql 3kz2ue2 s9 object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on)/pr-vg a- 6fcpprhuyw 21v 3x 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. What is the final 6v3u/hp1pp yf)vrw2 c r-ax-gcharge on each ball?

  Charge is

  What are the units o, g zff0id+ z 70;gv9ltcz2cg mee.a 79hv4ynxf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargkefalw()7z c 1s4)aib e is larger in magnitude than the second afz )7 (4ia)cw1 sklebcharge.

  Sphere A carries a net charge and sphere B is neutral. q 4 3qk((.hbdf6op,4vfw pncgrl2)gb They are placed near each other on an insulated table. Which statement best desrb4, )p23(klgh(g.fqfo cpdnqb4 w6 vcribes the electrostatic force between them?

  Two charged objects am /zex.m5lnf 3,4gtnkttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between the4lzen tg3.n m5 kxm/f,m

  Two charges are separated by a distance d and exert mutual attractive fo8 )lzqb32kg g 9s6 dcqj5iko0brces of F on each other. If the charges are separated by a disi2635glkdbsc0q o9b)8kg j z qtance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force Ffmgtt r7t2i21qg-r0 b p./ yu,pdjd1 q. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their ctmg2fq.ju7 y2 /r0,d rqip- 1tt1pb dgenters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton tkna- ( kqr6b*are 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 electb nk *rt-6k(qaron?

  An electron and a proton are separated by a ;p1f us ni5 ik*yuqrxsy9,;z/distance of 1.0 m. What happens to the magnitud; qus51s*np9r/ xuk;,yf y izie of the force on the first electron if a second electron is placed next to the proton?

  An electron and a protojx+ri3+cmih , omu;j) 82zzodn are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the2ou8iz+ )xj+m;m3c hdzrij, o proton?

  A point charge of +Q is placed at the centerh3imvcd*6 xh jo,8c 0j of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an elevcjx6i8,0 ho3 *cjhdm ctrostatic 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 square?

  A point charge of +Q is placed at thyrju :;bf)qaj7(c9kvzw 6upud7ih+7 e centroid of an equilateral triangle. When a second charge of +Q i;zhv uqu6b+d9j(kca 7 f)u y:7riwj7ps 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 at one of the other vertices?

  Which of the followinztxun hh :8pv3d)yw. 3t)v s yb:c9:ysg is not a vector?

  At twice the distance from a point charge, the strength of tbg7uvbfksw m-euq3;p p69/xt8rn( r5 3d n3wrhe electric field

  Is it possible to have a 1; g3 dr7m br+a;(mgxh8vvrrjzero electric field value between a negative and positive charge along the line joining the two charges7 m+(gh 8bjr;;gvmvd1 ra3xrr?

  Is it possible to have a zel ;2ap/1vptq oro electric field value between two positive charges along the line joining 2oa /1ptvp;lqthe two charges?

  Electric field lines nea cp7rt/6hhqa*f5d:*wimsk/ br psitive point charges

  The electric field shoa*wl: mtzsqm9k s56m+;j y)l3c nz ij6wn

  Can electric field lines inteijy55y k+n6cbh7 x8dn xw37sb*p*wv: ez2jxgrsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in+lw5a bo sm;k*qk6 a8uuwu7; u a uniform electric field. Give a statement cs*+k;;u8ako u7 w5 bwlu 6amquoncerning the electric field in the block's interior.

  If a solid metal sphere and a hol vxykh0:ev 4f 9u4u;aw.4lbpylow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the c pu w0:94;4e. y lkaxyvubhvf4enter and the surface is

  A cubic block of aluminum rests on twvo+pj6ps9hj;5ch / a wooden table in a region where a uniform electric field is directe pw;jj ch5/+9vptoh s6d straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equlzsr-f.n s/b c-o*od;ilibrium near an electric charge

  A positive point charge is enclosed in ajr+o8/k,ta4sc gbx+u mdu /s0 hollow metallic sphere that is grounded. As compared to the case wi80 +dtcb4/ kmujsax/,sogu+rthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static amt435lw abq) 9qr fmqhe/a:; equilibrium.

State Gauss's law.

  The charge carried by one electron is/+;ufv)r c nt;nkyn q8 $e = -1.6 \times 10^{-19} \; C$. 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 mfd(.ofzln4 j)hau5+rzjj00 j C. How many more protons than electrons does this piece of plast(r 4ff. jn0j+oh 5zdajz l)0juic have?

  What is the charge on 1 kg od8-lnfg d9gdq9 c/3.j ir8t hkf protons?

  An atomic nucleus has a charge ofb p54k7j*g clk $+40e$. 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 -hwi 8lik/ :vj.4.0 mC, respectively. What is the magnitude of the electricil . /:ijhvwk8 force between them?

  A 1.0-C charge is 15 m from a second chargw9x5c n. dpo6ntu1 f0ze, and the force between them is 1.0 N. What is the m n5pxn0cw.uo d9t6z1fagnitude of the second charge?

  Two 1.0-C charges have a force between them ofh0k .m/: euzd9br:bzi 1.0 N. How far apart are they?

  The force between a bsug/ba;n+ccz 2cmtz gfudj a,12)q83 ,b) ca$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm eo0 *floa3d n+6d,)+iscte bjapart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elebl+*o oda6e 3dtei,nf)s0c+jctric force between them?

  Three identical point charges of 2.0 mC are pl:1 oulll6i8*c7s+ocsh e2wn*fg o t0xaced on the x-axis. The first charge0ole6xll o1+c 27 *:8ctwn*hif sguso 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is p-vurk*ro 81uw laced at the origin, -2.0 m C to the-wk*urou r81v 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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC y8n 2wz)ciyu9r8zto- 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 the 3.00-nwro- ) y2 ti9cyzz88umC charge?

  A point charge of +Q is placed at the center of a28wp(uk y. qau 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 force that acts on th.8(upaykuq w2e 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 nC i x)kh 12i3rgees at (0, 0). What r)1 2xig3e hekis the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 3muo1y0u ymz- = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ofm zuoy u0-y3m1 the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCfbu363lofi1 1 lk8n ke are placed at the vertices of an equilateral triangle which measures 30 cm on a side. W8 31lulbf3n61ikofek hat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q 5s-x bz cn+q:jand +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 :zq-j b5 +csxn-Q such that the electrostatic 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 = 4.0 m. Wiy,9yg knk7u tyg0-q 0here on the x-axis can a third cg nyqi 7ykt-uky g09,0harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qj+ tf z8*s bd)j0wghjb:en0.q is placed at x = 2a. Where can a third positi j:sz+g wjq8nh0b b*t0jd)ef.ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A 6j,q:/+f .v jqfgqr qapt4z1m 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 tn 7oomhxbdb 02k9 2*axhe force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protonxa*n x o0kodbmb722 9h?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadsg-ttfmq lc a-(q,5mg 1 which are 30 cm long. Both are given identical charges, and the elec-t mcgqg-5 (a ,tql1mftrostatic 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 /c 5 g+poapa*1(:hi/lsnq:fc ji u9hbthe electric field at a distance of 1.0 m from the nucleus?ia opj9+h ic c hbp*as/l5g/fu(n: 1:q

  What are the magnitude and direction of the electric field at a distance of 1.yrnmyb ,d /0n550/dbr my 5n0,ny m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofs 7 6efo.ns1sfg.rq ;r the electric field at the location of the test chargssngerqf. ;1.s6o7 rfe?

  A 5.0-C charge is 10 m f 4oh;vg t+lqpuqx (2;nrom a small test charge. What is the direction of the electrlhp oxt;2+qvg 4q; u(nic field?

  A 5.0-C charge is 10 m from a small test charge. What is the mz67obx 6q dcoa b-av7:agnitude of the for 6caxqv b 7:b6d-7oozace experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of q0 j ugi,84zwe3.0 C and are separated by a distance of 4.0 m. What is the electric fielqwz,0i 4gue 8jd at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met:(pr*kh a4ofinw,-k eer stick and a -4.0 mC charge is placed at the 50 cm mark. Whatfokepk,n(:h 4-ira *w is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma,j,x0v( qlln +jvi cl3rk of a meter stick and a -4.0 mC charge is placed at the 50 l,vnv0 ljqi x3(l+ cj,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 are placed at x = 0 anda8e ;6k ,b,nd- vkzvsi x = 0.20 m. Whazi,e k-sdvn6 ak,b;8 vt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges +ywm5 ps:qivk) 3biu(are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center+wsy:b mk( ) vi5ipqu3 of the square.

  Consider a square which is 1.0c ed qm(+um7dl1f19tl 1 3pdi d7jqpa) m on a side. Charges are 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 a9dj3+dmi1cq d171p m)p lu7deqfl(t (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 ch okjwf ixrnzb) w3h ct9a410vy -:gc06arge of 5.0 mC when it is placed in a uniform electric field. Wvi6g:-3 j4rwfczx no9) c1 thba y0w0khat is the magnitude of this electric field?

  A particle with a charh2; u o2v4ycgp 6fpk0pge 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 0.12z y zouj:q16gqrsu- 6e (5w+;vy xaa5b0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for igju yysa5z r6 6-eb zq1:wox5vqua(+; t to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedcz x(0w2c t1(y y,(mg)htmo8+jdaw mi inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction t m+xmwym w1((i)jt y2d 0o(,cag8czhof the electric field?

  A metal sphere of radius 10 cm ca9y8k j;ys*ygm0t w dllm6)n2trries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from ttldj;n* m8m 29wkgyl) t0yys6he sphere's surface?

  A metal sphere of radius 7rzgfm9i ld5lq+7k,/ y0j *w8 jjklgu2.0 cm carries a charge of 3.0 mC. What is the electric fiej77/9+ ykjz rli*ljmu0kg 8w l d,fqg5ld 6.0 cm from the center of the sphere?