State the law of conservation of electric chargypxdele33(p1*vj,l )k ywq ;ge.

  Is it possible for two negative charges to att 2z c8l9)aiz:m a*gaqqract each other?

  Is it possible for a positive and a negative charge to attract eaa4rxg nc9 dort(1.yir :i90u:j pvs4zch other?

  A glass rod is rubbed with a p0 aeff1o95gwax od,f8iece of silk. During the process the glass rod acquires a positive charge and8w0oao agf1 5f9,dfex the silk

  A proton carries a

  The model of the atom shows 5qqri. w.7bgi a

  A neutral atom always 8x5: x* sbq htmzfr43khas

  An atom has more electrobp3gwxlx q8csg /9sz.f q 9+7xns than protons. The atom is

  Materials in which the electrons a73+r ef.qzj rfre bound very tightly to the nuclei are referreq.7er3jrf f+z d to as

  Materials in which the electrons are bound 7maai.g6c 3 ezvery loosely to the nuclei and can move about freely within the mater7a6 a3mgz.eciial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bajex0o :9im::kk4r/b)l jy cucr. The en cxbmo)ju90: e:/ ikcrl4:kjyd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a ned/to/p nhbhn w),mi ,+t positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Smo nbtih/ +,/)wpn, dhphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos, zakrd1/emw/i2 zz l/itively?

  An originally neutraelcb2qi5dk ;;:0pn 7bz (coryl electroscope is briefly touched with a positively charged glass rod. The p ok2yl7 e:ibq;(bn5;rdzc0c electroscope

  An originally neutral electroscope is eb(gpxf(1udi97 plo 6 grounded briefly while a positively charged glass rod is held near it. After the glass rod79(uflpie1(op gd 6bx is removed, the electroscope

  A positive object touches a neutral electroscopr9nj 0y t-pmx8e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hrm9 xjn-8ypt0 appens to the leaves?

  A large negatively cop pxjb-kw,o .o ./hbo5m2 z4jharged 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. What ijowh5- p 2 pb4.jxo/o,mkb z.os the final charge on each ball?

  Charge is

  What are the units of the Cous7py2j ooxs;0g)bk4kij 8 +pvlomb constant $k$, which appears in Coulomb's law?

  Two charged objects azt p(rx f d7-9qypi8+mre separated by a distance d. The first charge is larger iny mt9+ pzidq8 7(pfxr- magnitude than the second charge.

  Sphere A carries a net chargeni8*em-4z9 6ju ,ypeu4 txr ut and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fjtu6eun tp8 u,ez4y 9x*r-i4morce between them?

  Two charged objects attract each otherwje zk3 u89w)k with a certain force. If the charges on both objects are doubleduekkjw)w 93 8z with no change in separation, the force between them

  Two charges are sepajuxvhi* t +t;+:p(btzrated by a distance d and exert mutual attractive forces of F ouzt;p *h+(xvjit+:b tn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other w+ epvj qv(m r2w+k)(ygith a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation d+qemv gwjy k)( pr+(2vistance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepaq1s4-58zfl ab lon e1srated 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 sf81e451lnlq-zos a bthe first electron?

  An electron and a proton are separated by a df t r.r -8lkvu)nkv.i7zv +.ajistance of 1.0 m. What happens to the magnitude of trkrnl)- zkva8 u jf 7vvti...+he force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens toj0qw9v;go o4)u.ddb7c7 y oj:i vr cd* the size jd)od7ci;4 u*.qbc 7ogyvd9:w rvo0jof 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 second pointffju wwr 4a0eur 7q72izw78.b 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 elf4wjer7q 7ifr0.7ub wazw 82uectrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the(y (:t)r8r23tvyatx kz zlc* e 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 charge due to a third charge of +Q plac82 rty ak cvl:e((z)y3txr zt*ed at one of the other vertices?

  Which of the following is not a2bxm 8 f duq-u2yq,okg;y ,-bs vector?

  At twice the distance from4 fsxdn ahr3f4 -f2u0v a point charge, the strength of the electric field

  Is it possible to have a zero electric field vwkpyt8j11( h pra2,xs alue between a negative and positivep8 (swthjpy kx1r2 1,a charge along the line joining the two charges?

  Is it possible to have a zero electric field value f k9f7g1:rck.rp:ucsbetween two positive charges along the line joini:.kp:ruc7f1grf k s c9ng the two charges?

  Electric field lines near psitivem1;ys ) k(rf wvt;g; ,10fiqe:euvmuq point charges

  The electric field sh3tl k eo7ynh1,ch;7dpown

  Can electric field lines intersect in freemtxzgo1501 .xfb 5 tni space?

  A solid block of metal in electrs8zup xh- bpiv5mkn8i9g +:v ; q5bp1rostatic equilibrium is placed in a uniform electric field. Give a 5+gb9h- su8q:m8 z5r kvpvpbipn x;1istatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollowj-ev0f na zf;wtr6+ bf.k1e 1o metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfacvbo0j11fe- +t;w raef6zknf .e is

  A cubic block of aluminum rests on a wooden tab)ql*l4n ijwk1 le in a region where a uniform electric field is directed straight * jnw14iklql)upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equiun, *a,r-uz sef3t-lvw5x o a4librium near an electric charge

  A positive point charge is enclosed in a ob3 xh*/p;y79nid svqhollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above tns 3b9xy/ d;pho7qi*vhe hollow sphere has

State three properties of conductors in static equilibriues8x,2fcto )zu+1 q rvm.

State Gauss's law.

  The charge carried by one electron 6-nkfe8. yfgt lf2.lk 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+rhamu .da +fdw915 7lypbd8l charge of +2.00 mC. How many more protons than electrons d1fr+da8 5m .p+ ay7hulddb lw9oes this piece of plastic have?

  What is the charge on 1 k159fbpy *m 4-b2k3 dhd fwxcgrg of protons?

  An atomic nucleus has a charge of lbr6 t+jxb +i($+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated ;t vs5:yds;/xcfp+gkby 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively.: p/csx ;gtvdys 5fk;+ What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between the)a*qiq m20yfnhc,t2y :oyxp 9m is 1.0 N. What is the magnitude of the sey q0n)t my9o 22:x *hpqa,fiyccond charge?

  Two 1.0-C charges have a force between them of 1.0 rn4 glq )wl-tx agbz7on829:nN. How far apart are they?

  The force between a 6*1mup db7m fm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. I 8,m0.4j.b18vb euoeu /6 mg gjaohzosf they are moved to a new separaj1vu 6eggmse.b84 bajo.z0 uhoo,/m8 tion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0;lj d9-zy6un;x l9qqi 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 magnitude and direction of the electrostatic force which acts on the charge at the origin?nuq i- xl;y9zjd69lq;

  Three point charges are placed on the x-g ci7t8fy6:plaxis. A charge of +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 direction of the electrostapcy6:gi7f 8 lttic force which acts on the charge at the origin?

  Three point charges are locat.v7 65dkh4c .xpmzpxkvdu++ l(fro r :ed at the following positions: Q1 = 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 fozk:drp(4fmcp.x+rv k6v5.7 ulho+d xrce on the 3.00-mC charge?

  A point charge of +Q is placegbm*rnt* 14yxd 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 force that acts on the center charge if a third charge of -Q is placed at the lowen t *r4gxb1my*r-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 n.fp y gbqaxov18,oh/7 C is at (0, 0). Whaypg xa,. hob7 /o1vfq8t is the magnitude 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 ajo6v f l5l4c6yt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.o6jfvl 6y 54lc0 nC charge?

  Three identical charges of 3.0 m5vfsx;tnmyf,-5:6l ) sv hmtvC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude ;5v fvx)tlmn:65s -mh, f vtsyof the electrostatic force which acts on any one of the charges?

  Consider point charges of +w l;/cau-gs u1j1pi8l Q and +4Q, which are separated by 3.0 m. At what point, on a line between the 18;iul csau jgw /-1lptwo 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 at the origin and a +9.0-C charge is at x = 4.0 m. Where.+ -xzps piyd) on the x-axis can a third charge be pl)dy +xs-pp zi.aced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wzm7,4 d;ke5dovpv;qrbh s3s5 4* atpmhere can a third positive charge +q be pla,as k4dbtsq hr7m;d5o mz e*pv 5;v4p3ced so that the force on it is zero?

  A copper penny has a masmg jysh 8nwwp;(*ltq gn:*0d/s 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 w8cy*0nl f)(-bwcahw a fixed proton some distance above it. How fn c wwf0l-wya)c* (hb8ar above the electron is the proton?

  Two 0.20-g metal spherp;u se-r a77 4ghe5eue m-yol-es are hung from a common point by nonconducting threads which are 30 cm long. Both are givpsoa 5; uey774ee-e-rmugl h -en 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 charge of +40e. What is the magnitude of kt4sx8hr u-tjj i22w 3c+ido m*a)e5 fthe electric field at a distance of 1.0 m from thexd +fj8okc4 mtsturieha5-22*i wj 3) nucleus?

  What are the magnitude and direction of the electrica ghs-r on+lv 91,l;oa field at a distance of 1.50 m from a 50.0-nC charge?sh a o1glor;-,a9 +nlv

  A 5.0-C charge is 10 m from a small test charge. What is the4 kbc,/ory9, w9 +cnbp) 4clf bc9jvxm magnitude of the electri,kw4cc4yvjbc99o 9xnmb ,pcr) +f b/lc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What cydz 0oe,57z 2y0 )b5cvrsgr/b3garg is the direction of the electric field bzcrdyg532v7bzo0g05eycr gs/,r)a ?

  A 5.0-C charge is 10 m from a smalls 4g; 5ie(ak ,odg(cqc test charge. What is the magnitude of the force experienced a; 5, gkd(o scig(q4ecby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each x u ma4t.c78t, mibctsx+iz ,sfd08/zhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poin,zcms,dfuttz/.i8 s7cxt+bmi4a08 x t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meterzh: 55rxs(bg i stick and a -4.0 mC charge is placed at the 50 cm mark. What h5g: six(r5zb is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at 8k7 6fzhiyj m 7igv,3sv vu+e.the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm markv fyvk7v7ge83js. hz 6 u,imi+. 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 aafafea n)e3m6 ) x;5 urhov)v5t x = 0 and x = 0.20 m. What is the)o)553vvu mh)axe rnf6ea f a; magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the n 7w evv35-n-wibk-bzthree corners of a square of side 0.50 m. The last corner is o n-e5 vwkwzvb-i-3n7b ccupied by a -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 are placed at the cor0s5ditbr sn6 b0ta3gwsg1t 8/ ners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 ss si tat5dg83g1 bwb6nrt /00mC 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 charge of 5.0kan.ehl81 0p3)arl d z mC when it is placed in a uniform electric field. What is the magnitude of this electric field?a hdpkr38lla)e0 n1z .

  A particle with a charge of 4.0 mC has a mass of5w*k) + j r9.azggz 3m-hzdfk rfzd51g $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.1209pe 0+bls/jq z g is placed in an electric field of 6000 N/C pointing downward. What charge must be plaz bje9+l q0s/pced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge(3dcjaib 51 ia 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 ele3j5ac(bdia1 ictric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu bs(,n5 o*: ahgy9d.f sc,8.ixxgs bfmde of the electric field 5.0 cm from the b om d*cx9shin.5 ,:(gs,a sf8ygbfx.sphere's surface?

  A metal sphere of radius 2.0 cm carries a char3) x p**q9f0bchp+4pwt-vubgvhep 3yge of 3.0 mC. What is the electric field 6.0 cm from the center of tvhbpe pf- xg4+*p 3p tb h)0q*yv39cuwhe sphere?