State the law of conservation of el.m ailjdpcn3wb)3i1/0osan 4 xaz (6jectric charge.

  Is it possible for two n;///5lp t xuna pnoim.egative charges to attract each other?

  Is it possible for a positive and a negative c j4rrir xg-66dharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodq r12-9p-fd; hx pmu6jcsi u)f acquires a positiveixp-) ;qcufjsf92mpr h-d 6u 1 charge and the silk

  A proton carries a

  The model of the atoog9i3u3s+ +uiutl3 9ffvg bg. m shows a

  A neutral atom always vs;)q k5vt h/zf)u*ch has

  An atom has more electr;5otp+y uj4 4 ar8j9kkqv 3gbfons than protons. The atom is

  Materials in which the electrons are bound very tzhgf+/y aj3wu) sy;+k ightly to the nuclei are referred)+ zk a +y3fguy;w/sjh to as

  Materials in which the electrons are bound very loosely ) m8 gx4mxygd 3u(rvmr7;di2 bto the nuclei and can move avx3m4 g)d72yxi( grr m8db;u mbout freely within the material are referred to as

  A negatively charged rod is brought near one ece rx(eb* o3k1nd of an uncharged metal bar. The end of the metal bar farthest from the charged rod wilr*eeo3ck (xb1 l be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are 6weuva.tav qaz31 obd6: 92,zxw j ljd2qy21vplaced near each other on an insulated table. Sphere B is briefly touched wit.z6a 1bwl ,xv2dj2dv9tqw o2avez: j61y3qauh a wire that is grounded. Which statement is correct?

  How can a negatively19x7d-btkf v z, 4fvdm charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a p8j8vr dx0( b(irst9kyvka) j 1ositively charged glass rod. The electri9d8(vrsjj k8vb atrk)x 0y(1oscope

  An originally neutral electroscope ik apte u.)clt3-tn a60s grounded briefly while a positively charged glass rod is held near it.pc t0e.aat-u63 n kl)t After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,n49tx-m)taw u and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wtx )n-9 ma4wuthat happens to the leaves?

  A large negatively charged object is placed on an ib;tv)z v12 fuwnsulated 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 nt2 v )wuzbv;f1ot 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 Coulomb const wqhxn)lmj57 ,eq0pe9ant $k$, which appears in Coulomb's law?

  Two charged objects are sem/ 1+* je9kejyo)iwi fparated by a distance d. The first charge is larger in magnitude thf/wj*jiiy9eek+m1o )an the second charge.

  Sphere A carries a net chargzot5p/k5:w 8sz 9 yn oh3 -5dkxkomxw.f*6pgf e and sphere B is neutral. They are placed near eac- 5/.xs5 6f 5gkt3p zzx*o fkkwphn w8o9:mdyoh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain 2p s mm2-uueac8h xi4fbpe33 tfz;r(/ force. If the charges on both objects are doubled with no p-mm8a 2uxpze 33(4cib u;re/f2hts fchange in separation, the force between them

  Two charges are separated bux1 gj+ k;k7x5oz8njj y..me vy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are 5o gk1; n.7 kjjeuy. jxmvz8+xthe new mutual forces?

  Two charged objects attract each other with a force F. What happens to the foq6hy h 9wy6bxk8me n42rce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centersyexqnh hb64 k6 98my2w is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separat2akg(f;.r1vj mi v ; r8f9qxgkq6u6dked by a distance of 1.0 m. What happens to the magnitude of the force on the r dgq6 .6 ; kvmxrk89quk;afj if(vg21proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hlk jk +jg16:knw/ u j1ken(xdy.-tz2w appens to the magni+g6xlke(21u/wkj d1kw n j:.-j knyzttude of the 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 to0 skvu0bthap: maenq/r 7 3/z0 the size of the force on t7nba : huqk3ve0m0a0t/r/sz phe 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 secontm.8 oh qxt5;jd 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 mojx8t th5 ;q.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 equilateral trdk/ n37l ir +qebk/x3i2whsm4 iangle. When a second charge of +Q is placed at one of the tr2e7/mnkbkswh xl/r 3i4i+ 3 dqiangle'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 followiom:u qpxma ;(;+ );sg3)f eq1yvtmfzeng is not a vector?

  At twice the distance ,7nt osjfl*0m from a point charge, the strength of the electric field

  Is it possible to have a zero electric fij bek-teu;;rp7 +a f/m;+jp4i l(rnaj/v4bkjeld value between a negative and positive charge along thepbj/m4f;vpt;berjekr n ;iau7+(/j k+ lja-4 line joining the two charges?

  Is it possible to have aik -+prlb 9,yy zero electric field value between two positive charges along the lryi ,y kb9p+-line joining the two charges?

  Electric field lines near ps2e jie:t j*cbgqb*z /.itive point charges

  The electric field sho3c6ovu;f o ca q;rkxa9,9fd0 hwn

  Can electric field lines intersect in fre3y*8r ejy qx-rg ud6x5xpmj 5;e space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform hi gct8o8;f7u electric field. Give a statement concernin8;h ugo c8ift7g the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi jn6al m 2mbb1ox+j+9wven the same charge, the electric field (E) midway betwewjj2l6 + 91b+m monxaben the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifohb5ilur0.z /l :m*k qrnnh ,6vrm electric field is directed straight upward. What l uhrn5k.6, v/hnm0 ib:lqzr *can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an voutwbz-4) h w vv:x,.electric charge

  A positive point charge is enclosed in at247i qmiv; *ae wx,kn hollow metallic sphere that is grounded. As compared to the case without th;xqk742aewii*tm , nve hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eq0ey*cshr.dtx80f6;vkg 3p c duilibrium.

State Gauss's law.

  The charge carried by one electron i*ri5/hu fc s(vs $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge ofwqbbhyv-3p)8nv i03lb(5 i t ou :zrj/ +2.00 mC. How many more protons than electronbi wopz3i0qb)5t-v3b r jy/:8uln (vhs does this piece of plastic have?

  What is the charge on cqp0r4 auabqc +hjv9615z 3 zk1 kg of protons?

  An atomic nucleus has a y lfwo+u52nf ugdsf;+8rl :ss5pl6( lcharge 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, keg,(:8lby, 5 c2qlxe c9 hvylhave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrcq2lv8e( cy,gk y lx,:b 9h5elic force between them?

  A 1.0-C charge is 15 m from a second charge, and th1sg xj pq9h*-oe force between them is 1.0 N. What is the magnitude of the second chapo 9x1s-jgq h*rge?

  Two 1.0-C charges havm xsk,:r/p +q:q yv3 gz4tku*qe a force between them of 1.0 N. How far apart are they?

  The force between a a3l v/d6o.d8qn *ykc3s 7u1d4np plnz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart*t trna072yfkfi ma0 a yj3i6+, experience a 1.0-N force. If they are movetym f37a 20rnk0a+*tji iya6f d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axiscg5kyf23bq *rufhg03:g m 6/ wul un6u. The first charge is at the origin, the second to the right at x =c kq /wmruf u: 52ufun*y6ggb 33lgh06 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 m h,euj(5iw rmr f*c2b-C is placed at the origin, -2.0 b r-ec fu5ih2r(j,*wmm 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 force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2mb oy,cr*mgc12r6bo-.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = b* 2 gmcb-,r1mcy6roo -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 pvu tk7k--9bm,ch 3th blaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. Itu ,9vk3b kht cb-h7m-t 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0c;ck* v5nabu /.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0v; ncb/ka c5*u nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n i5jwcptsz5 1g+zaabtc0.1 upy4v0 z5 C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on z5+.1vc0 tzz ic5 b5ja0tpy4ps1 aguwthe 5.0 nC charge?

  Three identical charges of 3.0 mC are plqrl -:pa ohc8h9; n5htaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any ohr thacnq;o8h9 5-p l:ne of the charges?

  Consider point charges of +Q and +4Q, which ar8ume;n(j ,ylj.,er -.raa: te6ngcx ge separated by 3.0 m. At what poi8.n ,ejtnex(6aa rmre;-cuy,.:gjgl nt, on a line between 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 at the origin and d(aeqkq j 6r60fbf(kf,t) /7lw) htkh a +9.0-C charge is at x = 4.0 m. Where on the x-ax)ff0rh7bf k6dat)tlkwq/ eh6(q (j,k is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whernmw(cakuvfh:a ulaf7j: 77no21a s )*e can a third positive charge +q be7u:)jnam2oa(:uw 7c f7vl fkn saa1h* placed so that the force on it is zero?

  A copper penny has a kuk vqsllx76t (peb2g 4c+4o7 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 against the force of gravity by the attracti*zqh j/d m8pgav 3u )eew6*w-eon of a fixed pro * )3- 8dz*pwuemea/vjhqgw6eton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point rq-ir3zy 02 of ahxv*9by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads of*ahq- xv3 0iyr29rzis $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the;r r;,,a4 gbl8kvj ews magnitude of the electric field at a distance of 1.0 m from th r ;jg barv8w;,ek,ls4e nucleus?

  What are the magnitude and direction of the electric fieldsl :0)eh( o pze f66y.t8g-itl5k cnxd at a distance of 1.50 m from a 50.0-nC5)n e6g tch-py6 lt:ixd8s0.ezlf o (k charge?

  A 5.0-C charge is 10 m from a small test charge. Wha3; 6ko 49pegpjpd nez6t is the magnitude of the electric field at th6zd4p3jno6ep gp; k 9ee location of the test charge?

  A 5.0-C charge is 10 m from d )j /j9zrofppb+xbv 3(ron+3 a small test charge. What is the direction of the electric fiev )ox+3b+rofrbd /(pjpzjn9 3ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thekj3fd n psw(q2a(57me force experienced by a 1.0 nC charge placed at the location of the test chk3qmf (ws5p e7nd (a2jarge?

  Two point charges each have a value oflt7.kec92 *wyazmecij6f 96q*cp it4 3.0 C and are separated by a distance of 4.0 m. What is the electric fieldt6 aeqtc649p* ym* ci7lc.kie f9jzw2 at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter m hr:9(xm4;0tm l9ia eygxdc.stick and a -4.0 mC charge is ;ext dy(0:m crlmxih9gma.49placed 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 marzs(/ ,s6fqwvlr-l7wo k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lisf rw-/lw6s(o 7vqz l,ne 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 0p2htbc(uuc5t skr yv ch7y2lr7 ,*+land x = 0.20 m. What is the magnitude of the electric field at the plr0 727pct( h*ythuy lv2s+bccrk5 u,oint midway between them?

  Three 3.0 mC charges are at the three corners of a square o ;q yyef69r/amf side 0.50 m. The last c/aq;f6 yye9 rmorner is occupied 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 g hp bt9o anep3z++:00ta*sr tplaced 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 0ea rpobt+0 tg:*s+9taznh3p magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed l6ezlxkf/ )q0in a uniform electric field. What is thef e)x/ 06qkzll magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 1ryyk-qb /iocrv h:+/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 6000 so33dkk(a:hux* 4ky yg u0l1w N/C pointing downward. What charge must be placed on t3:o(a0lukwkdyuy 3k *hxg14 she ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball:bcfs6zsi oonzu)p8 j26 i97s is placed insidsi686pzcso f sn)2z7ju:ob i 9e a uniform electric field, 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 mC. Wv d4nz8 6i(mreurns2o;t.m 1fhat is the magnitude of the electrniz1 r6;( t.emr4v u 8mo2dsnfic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha5 :ht;ep *fynlt is the electric field 6.0 cm from the center of the sph;f* yl:e5ntphere?