State the law of conservation of electric charg0zl zqp2 xq(jdbpu693x uq.e(eb90q de.

  Is it possible for t m 8sbh +sn+xt,c1b(pawo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other?zv,c).fqh,1r :l yt dd

  A glass rod is rubbebt1(i2tf 23amtne5th d with a piece of silk. During the process the glass rod acquires a positive chfh3t(t5 a enbt221tmi arge and the silk

  A proton carries a

  The model of the atom sho vxhqbw7p l0*2sj 1fd9li*ah u4( tp/aws a

  A neutral atom always h3rl8 ic tg /xfz14nvk,o;h -h:c v7kkxas

  An atom has more electrons than prgbkyc3rwj*x k:h+3 )i otons. The atom is

  Materials in which the electrzj oyk2 w7 onb(kv q*fry8p;0)ons are bound very tightly to the nuclei are referred to asyvk0bzk wj(7)*nfyro;8p2 qo

  Materials in which the electrons are bou 1jrsnc; su1q7nd very loosely to the nuclei and can move about freely within the mate;rsqncu1j17 srial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bary /si eil/ag24. The end of the metal bar farthest f/s ia4y2gel/ irom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B isvollf)c5 y5t- neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement cly) t-f5vl5ois correct?

  How can a negatively charged rod char 0kdfsrk3a( ;rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged ,ojzan0a ufvhbepx/4m 1:dbp y6v8* / glass0 pvpo4j/ v1yzaa6deb:b8f*nhm/ x, u rod. The electroscope

  An originally neutral electroscope is groun5 caui+7.h lwt m3e,foded briefly while a positively charged glass rod is held near it. After the gl37 af,utwml+h ci 5.eoass rod is removed, the electroscope

  A positive object touchs(/ro69chy)p,dvy ar( i a3hjes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch i)dp(6 / y3yo,h9arsav(jrh cit. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrawsxqp5 ;ca0l7ex syd4lz p(q j*7 1pq1l 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 nolp71x4pjsqypcs5e*; w1d( l07zxa qq time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Cj8)j 0j n4jte;n dsg9soulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsq-/jwd d6k9h at charge is larger in magnitad/9dh - q6jkwude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placeda-kik.-q7 d lo near each other on an insulated table. Which statement best describesla i oq-.kk-d7 the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges os)e(vr dsr *9vi0w; fln both objects are doubled with no change in separation, the force between i;v(9drve*fw 0r)lss them

  Two charges are separated by a d2savebpa)x:l6 a3o 6zey,x f3istance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcebya6) eoa zl3 6vs:xfa ,x2ep3s?

  Two charged objects attract each otheaa wzi82 2 n7vrt7hfma,8(uoz r with a force F. What happens to the force between them if one charge is doubled,8nzrwf2a7z2ao 7 ( hma8i tvu, 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 are separated by a distance of 1.0 m. What happens to7pd26 1 jjo uq6zm7ifq the magnitude of th2poq7qf 76i1uz 6jjmde force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance ofn(b 3q +a jjzj5be7ojgme. a 03,a6trs 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is p3+abjjm .boe sagarjqet6j 57 0(, nz3laced next to the proton?

  An electron and a proton are sfyglyl 4ni cvn9:t z8w,6r;s 0eparated by a distance of 1.0 m. What happens to thlyl z6 4wnt;yinr9:svc0 8g,f e 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 ce h ekll,s e71-r)hsgd)nter of a square. When a second point charge of -Q is placed at -,hsk7deh e)s )gll1r 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 square?

  A point charge of +Q is placed at the centroid of an eqw tg4yp4 tqw77ht4/t 54f gjjvuilateral 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 place/v 5j44gg4tqthyfp4w 7ttjw7d at one of the other vertices?

  Which of the following is not a vector?ws kq/e8c7qna0 4e)nf

  At twice the distance from a point charge, the strength of the sj9c2gk8 6bd 70by)vxjf zy.aelectric field

  Is it possible to have a zero electric field value between a ne aansldi,5s, 0 yp2hg7gative and positive charge along the line joining thy nd70paass ,i25hlg, e two charges?

  Is it possible to have a zero electric field value between two positivvaocj /n n5,har7-/ys;rb1 yc e charges 7yc 5/a1nh rc /;-ranyvsb ,ojalong the line joining the two charges?

  Electric field lines near -de*ykki:a2 3y(i zsvpsitive point charges

  The electric field shujn4zc 9c2 mq(own

  Can electric field lines intersect in free spay9rdu3fq*p bl;4e a a2 gl2sw4ce?

  A solid block of metal in electrostatic equilheer mgelr vv:+705ns(1rx. wibrium is placed in a uniform electric field. Give a statement concerning the elec0eer.: eshw1 n+rg mr7v x5lv(tric field in the block's interior.

  If a solid metal sphere and a 2m-i6,y 8mfwm 3mtof9znj) d ghollow metal sphere of equal diameters are each given the same chafftw69y mm)2znim3,o8-jg md rge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in9z;)n 9uisv pn a region where a uniform electric field is directed straight upward. What can be said concerning the chargeszpnvi; u9n9) on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electri, 5jhvb(lb5(rtybh. jc charge

  A positive point charge is enclosed in aq9 9k x9dlv(7e zq)6iyszzub . hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spher96yz.v 9bxu9 ed(7)kqqzz i sle has

State three properties of conductsf(d4 vn4s5 uadiy)0hors in static equilibrium.

State Gauss's law.

  The charge carried by one el9 2zsoqfvsm (8, ,pktvectron 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. How k.xun n- 7els3many more protons than electrons does 3n7.e-x klnusthis piece of plastic have?

  What is the charge on 1 kg of pr 01;nl9tsqm /lch;ki kotons?

  An atomic nucleus has a ch 8r0(7o/+muqow(ghfy jbz7f/szl 605nb jxzbarge 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 chargqqy,3g6pv3 -+/nlhjtey-2yzdq a u6je values of 2.0 and -4.0 mC, respectively. What is the magnitude q6e /l6-yhnu , dv tyqpja3+qj- yz23gof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bjoi1gii g7k5 i+c1*ooetween them is 1.0 N. What is the mag+ioi7gk5o*iio 1jc 1gnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hyml7 : d/k dduc5ym*q9ow far apart are they?

  The force between a olhm /2i j ycab:.e9 0vc9j+ar$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi w3-2b. ( n/wrmgvarhjence a 1.0-N force. If they are moved to a new separatio(ramh-wj /r g vw23n.bn of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstp*9* wt c s(lj;j+ojkm charge is at the origin, the second to the right at x = 50 cm, an+9(t pwj*kmjc*;ljs od 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 placq/l,h l.mwny3ed 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 thq lh/ml,w3.yn e electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00gwvun +2( ew0hm a+i+n mC at x = 1.00 w + h0a++2(i engvumwnm; 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-mC charge?

  A point charge of +Q is placed at the center of a square, andk:a r l1x;/xgv 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 the center charge if a third charge of -Q is placed xg x:/k1avrl ;at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 klbn3.,y jg k-= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitukg ,-lby3j .knde 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 jj 3rwz8 :nv*2dg2nfvf57:p byoxt9w = 5.0 nC is at (0, 0). What is the 8j5f2bgnwvz7nx: t:3rpdy 9o2v fjw* 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 eqk(aeaq) 2m)k t8+rnliuilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whn2qtm8k ra )(ai )+lkeich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whauwbn3v1o xhmel0/uwpf*t 6 cd6 8h8 a0bp mq:(t point, on a line betwe(w6f0 l a w* 1cpuuhbh68 nx:pedm/b t0om8qv3en the two charges, 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 a1r;4 gt lv)hyvt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third c)t1 glh; r4yvvharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and )fw3e8c3bsyj charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onbe8 fc33wyj)s it is zero?

  A copper penny has a mze21/q+2, qobrgwive o 7hj4rass 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 the force of gravity by the attraction of a fivxa 7f u8mq/9rko51 upxed proton some distance above it. How far pau7u v 9fxkr/o8q15 mabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting th2v6or* iaz9:fn2u- cj l ofn6sreads which are 30 cm long. Both are given identical charges, and the electro6* n2fi9jao2fc6nu-:vr l sozstatic 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 electric hsj-aoz1cvyyyic7g:k-z :;d+sc)y8cfj n /* field at a g; ov- cjsy j7z :czc:/)+dycy 1yhs-inf8k*adistance of 1.0 m from the nucleus?

  What are the magnitude and direction of t8)ct (udhii9 tn)1 rmuhe electric field at a distance of 1.50 m from a 50.0-nC charg)mr t)di ( 18ih9utcnue?

  A 5.0-C charge is 10 m from a small test charge x84pb9y5sk3 :of1ihb kp(9 odx/cmpm. What is the magnitude of the electric field at the location of the:pi 1y dp8p39kmxmox59 4kbcso bh/(f test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of 7h)4iu x0dn53 nqmxez the electric fnh4uxn)x i0z7 35demqield?

  A 5.0-C charge is 10 m from a small test charge,id1tbstb* +b. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test i db*s+tb,b t1charge?

  Two point charges each have a valuq6 w4/gju6kpzs b22efe of 3.0 C and are separated by a distance of 4.0 m. What is the uew2fgz kqjpb46s/ 62electric field at a point midway between the two charges?

  A 5.0-mC charge is placed ate dh,3,vl0tx,sv9pnm the 0 cm mark of a meter stick and a -4.0 mC charge hp ,dslxt,e vnv3m0,9is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a ,k8(v9h1qqqq n0; l hd)nlytg meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is,qt h)hn;g 0q8vy1(nkq lldq9 the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x ;va w1k:zgdq45)yruo = 0.20 m. What is the magnrvq dka)1:w 4y;z5gou itude of the electric field at the point midway between them?

  Three 3.0 mC charges q4apl+imk fanj 4u2f;5j zgyv; qyd 8*/3;imzare at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC +dkpm v;aq zf2 i lq5;jfy 48umza4ijn;/gy3*charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placg*i+cy7 js+ n *hfhixk,:vwatj ,qlos30a 2*ced 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 magnitudej 3qsh+,gc +*0c7x2avi,l :*ikswfnt aj*hoy of the electric field at the square's center?

  A force of 10 N acts on a charge of 5krny9m;es e0*nn g rd sb4*4w,.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieldrnr*m*0dnwnb4gk y9s; ee4,s ?

  A particle with a charge of*i zwg.,k3mkw 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 0.120 g is placed in an electric field of x*p 9c8xnk/3cpqg ud;6000 N/C pointing downward. What charge mus 8g3/q n*cpk xu9xpd;ct be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.000glga-kf 5-c, fgb8 va nC. The ball is placed inside a uniform electric field, and is suspended against the force of gr aggvb0fk-a85f,lg- c avity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. q+j h0e, y.ymh What is the magnitude of yjy ,+h .0qhemthe electric field 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 7nhshc1oe;; delectric fc;; neh 1s7odhield 6.0 cm from the center of the sphere?