State the law of conservation ofw7tzi 0dpbpp. hny ;/5 electric charge.

  Is it possible for two negative charges to attract each other?w.jz2wcq .jh 1p ms)gl ++9wum

  Is it possible for a positive and.auxz+ n- rie8td)y 2auo9 en6 a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During y6jbx+(l ec(tthe process the glass rod acquires a positiveetxby((6 cjl+ charge and the silk

  A proton carries a

  The model of the atom showvyc tk-e6bx5 s. -zd5ks a

  A neutral atom alwaymnus0qo0v-2k* -yya- i/ qurv s has

  An atom has more elect. vfb76m4 i/i 0cs1eb nhk+mbi9p l(virons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleiq,b2d(5q blnj0v3lr i are referred to as2ldn0jql 3bqv( i,5rb

  Materials in which the electrons are bound very loosel)j0zfof //- 2mxmrz eiy to the nuclei and can movejxmm/o2-zf )i0 zrf/e about freely within the material are referred to as

  A negatively charged rod is brought nu1 vtrk/fhk,. ear one end of an uncharged metal bar. The end of thrhk.,v/u ftk1 e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ax(q0a*.eb8a yvbu n j:re placed near each other on an insulated table. Sphere B is briefly touched ua8v* q.:(axbnjb ye0with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivhq/wsl. 9hs0cnq+ * ggely?

  An originally neutral electroscope iss :)knkze f/ywombq1k a 2y*/. briefly touched with a positively charged glass rod. The electrossefyw1a z.yqk // ) b2k:mkn*ocope

  An originally neutral electroscope is groune5cr7 :pm8exfc);ym nded briefly while a positively charged glas yc;n7e r:cm58pme) fxs rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The5iiyoc,d)18)z ldz9 ga dkgx-n a negative object is brought near the electroscope, but does not touch it. Wh9o,gia-ky8x d di)cg) 1zl5dzat happens to the leaves?

  A large negatively charged object is place(uz**ciod6l0 l1 qj(fwi +odmx o3(ypd on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metadz li16dw3i+uj(p0oxf clo( y** o mq(llic 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 of48yuv zm 0hs;m -5ruhr the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated p3s--a nklr x/by a distance d. The first charge is larger in magnitude than the second cx3n l-/kr- apsharge.

  Sphere A carries a net charge a0hae grp/xx:0 nd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic 0 /0: hegxpaxrforce between them?

  Two charged objects attrt fbg g61g0ep-act each other with a certain force. If the charges on both objects are doubled with no change in separatiog fg-0b6e g1ptn, the force between them

  Two charges are separated by a distance dr*6wd cfq4b+p and exert mutual attractive forces of F on each fpr *4qbc+ 6wdother. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with (e 9c*u,m 6dkrv95ts2qqerni n.l o-a a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth ivel2(e-k t 5qocn9ia,d*9rr unmq6s. ts original value? The force is now equal to

  An electron and a proton are separated by a distance of ;hx2w n*id q+e1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electro eni;w2+qd hx*n?

  An electron and a proton are separated by a distance of 1.0 m. What happensuf7 mc s9mq3f/zo -rg7 to the magnitude of the force on the first electron if a second e q7-9gf/f3zcu7mmors lectron is placed next to the proton?

  An electron and a proton are separated b4 h++ v8md.alijth 7uyy a distance of 1.0 m. What happens to the size of the force on the proton if the electron is v htu7d+4j.aly8 h+mi moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a swn2w o d:.l2zdquare. When a second point chargd.zlwdw2n 2 :oe 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 square?

  A point charge of +Q is placekt*97uw doq efb y5s83d at the centroid of an equilateral triangle. When a second ck5*y3du bs oe9 7fwqt8harge 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 placed at one of the other vertices?

  Which of the following is not a vectorol u(uf)9p (fv?

  At twice the distance from a po-y*fe mt+w)ax int charge, the strength of the electric field

  Is it possible to have a zero electric field value betwe (s y5x3rka22u m/8cjt;ftniben a negative and positive charge along the line joining the two charges5 r s2(jmn2acb/3u;xt ikyf8 t?

  Is it possible to have a zero electric field value between twe8zzcbv7y92 hxy es )(o positive charges along the line joining t()vz82sby 9ex7 ehz yche two charges?

  Electric field lines near 6e 3189yiznan d6fz he7tqyss56 5qd-uc7kb a psitive point charges

  The electric field shoooyq c.*1k6e.vi (pr twn

  Can electric field lines intersect in free 7:yqjb/na f62btu o4sspace?

  A solid block of metal in electrostatic equik4m 28t v4zrmfnc /ol6 tcn7c2librium is placed in a uniform electric field. Give a statement l 4 4m2t8oznt7c/mc2rkvf c 6nconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters alxft) mdl. q,,s tf75dre each given the same charge, f)5,tl l7fq s,dxdmt.the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table infs2 my*m.mod 8s-5wei a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top s *e mdyms- 5.fmis2wo8urface?

  If a conductor is in electrostatic equilibrium near p,.6kzfn +bs qan electric charge

  A positive point charge is enclosed in a hollow metallic sphersh2c:,bf 3zzs0)qigm a p3+/s 6zzboge that is grounded. As compared to the case without the hollow sphere, the electric field bzz s32g:sm/haz0q+3pc )gs ziob6 ,fat a point directly above the hollow sphere has

State three properties of conductors in w 7zd01jyfxjaf:2.3- yafifustatic equilibrium.

State Gauss's law.

  The charge carried by one elect )f0 se/5vcadlj:ak,lron 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 ;et 4rb2*yz* c*z ne ,n k1-c9zhsyqxza net charge of +2.00 mC. How many more protons than electrons does this p- 1rzncz,xh ye *;n*k9*2beqzc4s zytiece of plastic have?

  What is the charge on 1 kg fop wen.7,3t, nvv 5klof protons?

  An atomic nucleus has a chais.qeyx)gg-)ly )t /prge 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 2.0 and -4.0 mC a inko+m,2c2e, respecti ak,moe2n2c+i vely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second ,dbw* sp/v5k pjfy6e8 charge, and the force between them is 1.0 N. What is the magnibpkd,f8 *vjsep5y /w6tude of the second charge?

  Two 1.0-C charges have a force between them f3 4).feu*jyj0zc inas9el 6jof 1.0 N. How far apart are they?

  The force between a rpg.w9k nm 2j4zw ) -qb,qzs/q wxy)/w$30 \; mC$ 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 1oj nichgevc.-rfx,96 gq65 m6.0-N force. If they are moved to a new separation of 8.0 cm, what is the electriv h6 gn jm6 o6f,xir9.ecqc-5gc force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first9uk mvdwix4(3 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 the9 wx dk4mu3(iv charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is paz/o1usv7 nic:4a et 8laced 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 47s8c:evnauz/toi a1 the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thex b//7+6wdso4 n jutlc 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. 7b/dl6+ o4x/tjs cwun 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, and a2e8xmx* b)he f 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 thib8 exmf) *2ehxrd 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 35rg0t 9y qpaxt;n3nee z+l z+at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?l n339;rpeg+tn0zzx5e t+ qay

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCw7flb v3veq*s j 4f88d is at (0, 0.10 m); Q3 = 5.0 nC is at (w bjq8v84dse*7 v3f lf0, 0). What is the 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 eqn8 d6sry(k8duw8wb 6)0f dcicvp xl* ;uilateral triangle which measures 30 cm on a side. What i88y60)u d(*s wwin8 kdpvrf; cxlbdc6 s the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ar+zc-27g l;h ojvmfvz4e separated by 3.0 m. At what point, on a line between the two charge;zmc2zh 47olvjf+-v gs, 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 ks7dj9pkfj obv0 1uo:ed7 u5+on the x-axis can a third charge be p+79kjf kd570u:o sobvdpuj 1elaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a7y0k8u bil21u + k6 kewnrgpg+t x = 2a. Where can a third positive charge +q be placed so that i+6 knkp+gyerg8w2b0u1 l k7 uthe force on it is zero?

  A copper penny has a mass of 3.0 g.opsakj+o0cv i41j . z; 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 gravit+r0yxh k9 t.tj k.dsa5y by the attraction of a fixed 0+ s dh tykxj.t5k9.raproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres a.i :o ckup7dli 7x)e 7qx1n1cfre hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thre7:del1co.kx )ipf 1qc7 i7nu xads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargmk,homn.bv*; xp+n )qe of +40e. What is the magnitude of the electric field at a distance of 1.0 m froh*;.qpb+, n nox)m kmvm the nucleus?

  What are the magnitude and direction of the electru7co8vf+*hc,3j(cl1lyak v qic field at a distance of 1.50 m from a 50.0-nCq 1hl 8 +,o(c c*j3kla7vycvuf charge?

  A 5.0-C charge is 10 m from a hfq p +y ug-.yl(-a /l9rqie(,+ ugnozsmall test charge. What is the magnitude of the electric field at the pn e,-u9(af+- iu+(y lg gy.lq/zr ohqlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionsa2f.r ix96z cp g(aphid)7 1o of the elect921oxr.s(p)d 7iiafgza 6hp cric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit2 1o ,neql*3 qgcoh)qwude of the force experienced by a 1.0 neoh) q 32 *c,qqw1glonC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C andgbo/ 6, bo.0opwl ydben2n j,* are separated by a distance of 4.0 m. Wo0lenond2,6b./bp*ygwj o b, hat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic3cv8r:q ; f b,r5nveysz7.u rlk and a -4.0 mC charge is placed at the 50 cm mark.vr, :qsu57y.8zrbenfv;cr 3l What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st nz0fx )ao(moi e4g1a4 ,ivdi)ick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two char)oeifd(ano g,40m4zv ii)1 xages is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.23bw ls-(,teq72ql b at0 m. What is the magnitude of the electril,3b qa-2t(t lqe7wsbc field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofb **fh-v4oci ;wzzmp lg 5b3gkf*+lp. a square of side 0.50 m. The last corner i +* 3lwbkzl-icpo5f4hv .*f mgpg ;z*bs 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 sid;sb0b2 s d w9(c+chgdbe. Charges are placed at the corners of the square as follows: +4.+hw 2sg;dbc9( bd cs0b0 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 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 pazoaxq(u 5-y /wo;de k0(oam7)oc+ zklaced in a uniform electric field. What is the magnituz (ae aoka z(om;o-70)wcx+du/q5koyde of this electric field?

  A particle with a cha*pf sz mgn2,nd:9+4 rcsbll1j rge 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 0.120 g is placed in an electric fieg51bnwy x-d2uwlb.a.; ap j. mc10 eield of 6000 N/C pointing downwardj.ycw i2bad.be1xn ; l0ue- 5apg1w.m. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal fjr ,)au7z(i /n1vrjnl is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and fr,ri)/ na(j17ujnz v direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn9fbji30mgf*q uv h3j9*j-lb8s dya 8 uitudel 0 uauqy938m h3 *d*fgjs9ji8b-bfvj of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cmdn/il;.8pj1 3 ps bagijlc e-mx cw/73 carries a charge of 3.0 mC. What is the electric field 6.0 cm from t/bc8di j/wp3lm js3;nil .g-1 aecxp7he center of the sphere?