State the law of conservation o-zm+ 2/bre bhof electric charge.

  Is it possible for two negative c7q 0;u/ef ro 5q2wpqgbharges to attract each other?

  Is it possible for a positiany+zl tm9bxxiel w 3u x3 w8pv--r(26(cit8 vve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.b(f78zum 3e lg During the process the glass rod acquires a u3z8eb(l7mfgpositive charge and the silk

  A proton carries a

  The model of the atom shoa 2z, x 78 u*w7kity.udn*sfdrws a

  A neutral atom alwaysld)6m1 8cjdbi08 ww, * rku fj7sgr0zw has

  An atom has more electrons than protdega5 ly8pu18 ons. The atom is

  Materials in which the electrons are wc2swwu e,5o: bound very tightly to the nuclei are referred to a w,s u2ww:co5es

  Materials in which the elxsn - p0wb5fk .1wto3oectrons are bound very loosely to the nuclei and can move about freeofpo0 wbn1 w53t-.x ksly within the material are referred to as

  A negatively charged rod is brought q 8,jds/ kymg,l-tt;hnear one end of an uncharged metal bar. The end of 8t k/h,mj y -gsdtl;,qthe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pyk-sab1 ) iv0 o9el7pzlaced near each other on an insulated table. Sphere B is briefy9 k)zvilps1e0 7bao-ly touched with a wire that is grounded. Which statement is correct?

  How can a negatively c(qpw9v2 j7p dj;:ufpv harged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivee,t)b7lpz06vzi6 k auly charged glasskai )ezb 6tu67p,l0vz rod. The electroscope

  An originally neutral electrosc0(ynm eee*lp/ b2s:ql ope is grounded briefly while a positively charged glass rod is held near it. After the glasssmq le/ep0n:* ble( y2 rod is removed, the electroscope

  A positive object touches a neutral electroscope, a6,i5 11:nm7 n df-z xg *wgkdfpxme0fnnd the leaves separate. Then a negative object is brought near the electroscope, but does efx1i-n5fd xdwgmknp6*,mz 07fg1n: not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ioiagn5i:vq1e 6rp .p :nsulated table. A neutral metallic ball rolls straight toward the obao6 iv pq5g1n.: eri:pject, 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 charge on each ball?

  Charge is

  What are the units of thez.9p zp2jt g8k aq.bqhx ;5a9v Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch-pf cpu/*xkg.arge is larger ink / uppgx-fc.* magnitude than the second charge.

  Sphere A carries a net charge and sphere B is n1; j b4.n/pdgfnmsxf;eutral. They are placed near each other on an insulated tbn nsf;jf1gxd.4 ;/pmable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fs g1)j-nwc,a 22flzyd orce. If the charges on both objects are wj-a12znl2fy,dsg ) c doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert c(ibi gk idl aam/8*v-/*0l kymr-a: imutual attractive forces of F on eaci0(l*dkl/akcvyaa mi - ri*i8mb g/:-h other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with ap;z)we ypr 3v69lsz-7p0 swtgyd(.jq 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 irwp9s 3g;lyy) zw6jpd pt 7e(s-zv0q .ts original value? The force is now equal to

  An electron and a proton ar) gp*1ien8:a 8vjmrbke separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton ifpm)18aknr v:eg8* ibj 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 halp(ws *t8 oq d*nevs+ 32nhy1cppens to the magnitude of the force on the first electron if a second electron is placed next todvs 2e*o*l3nt(c1sn8wqy p +h the proton?

  An electron and a proton are separatenoq;/:vf8yymd 4.ocabe a c cs *jd-4l4m9(i yd by a distance of 1.0 m. What happens to the size of the forceycyd4aoq-8os4mn* v9m/l i.df :jcy4a(cb ; e 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 owdm fvt v2 r253)dfna i8*aq3vf a square. When a second 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 center. Now, identical charges of -Q are placed at the other three corners of the square. 2w rivav)qvd25mf83a n f*d3t 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 equilafoofnfv6 ,wq;0 jg 6t+teral triangle. When a second charge of +Q is placed at one of the t,0q6 oftwfgjn6 +;vo friangle'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 vectvaj;gay) z3 r8or?

  At twice the distance from a 7 hzkuav mpaj. qs5/12s,s-lbpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value be*7 0paqob d3 ypd.m. -79a -znhtmg(myc.lwbctween a negative and positive charge along the line joi0-tm-9 a.7 mmldn p7(dhogy.. zabbp y3c qwc*ning the two charges?

  Is it possible to have a zero electric field evk2e 6/k/j0zh 6mnph value between two positive charges along the line joining the two 6k ekhnh20pvz6//m ej charges?

  Electric field lines near psitive point charzz,g8;lmcrq9- 6k* a kqdgk v7ges

  The electric field shownq.dmk2z8nk;lf j4 fuq0 k 3hg-

  Can electric field lines intersect in free spaj+ek uvxo 50l5r9vm )uce?

  A solid block of metal in electrostatic equilibrium is placed in a *h4m.06 +mveuc cj xriuniform electric field. Give a statement concerning the electric field i* .cic e+mxu6rjm0v4 hn the block's interior.

  If a solid metal sphere anysh6ud cn0+l7.6kmwh d a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfa d mhln6cu0 h7.yw6+ksce is

  A cubic block of aluminum rests on a wooden table in a region where puwo tnqc52y,7u h6 p2 d6f,xqa uniform electric field is directed straight upward. What can be saiwy6n6fp u2, o cx2q ,7qutd5phd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equ2q8t4 xmq -a*f ucps:oilibrium near an electric charge

  A positive point charge is enclosed ix/q 0i)l-dfy,9 -qdsfdt :bbzn a hollow metallic sphere that is grounded. As compared to the case with ,ztd)y0l/9f qfbb-qxs-d: di out the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsgohat+x- w/.e(. u zkei:fb,d in static equilibrium.

State Gauss's law.

  The charge carried by one 7rp)y:-qmyvk g 4 t2uzelectron 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 many mor9v ): oz8tova sj8 +hpag8mi-ee protons than electrons does )zop-tgv+m e8 a:8ia jv8osh9this piece of plastic have?

  What is the charge on 1 kg of protuuot4 +ssg li;g44.c yons?

  An atomic nucleus hasr9h.o. +okzyplm + qy, a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5b h4 hm6lh;ub8 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force beh46b uh8m lh;btween them?

  A 1.0-C charge is 15 m from ad3ye727q zr ru s)eo a+v3b8vc second charge, and the force between them is 1.0 N. What is the magnitude ec dbzv+ s7ry33v7oqe ru2 8)aof the second charge?

  Two 1.0-C charges have-lj4czi.44j u k +u.ur oydgc: a force between them of 1.0 N. How far apart are they?

  The force between a zquym2k) z,,j $30 \; mC$ 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 1.5g yb5 gh*5w*ovnak( w0-N force. If they are moved to a new separation of 8.0 cm, what is the ele(wn5oh* *vb gk5 5gwyactric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axg2j3(x errw ,8,ws1ymp sp8mr is. 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 tsm w,r 1wpr3 p2, (x8rysjm8eghe origin?

  Three point charges are placed on t0b ,o9an7 cy2 9qo: szt6yombrhe x-axis. 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 electotas62mc9q :by o07,rzn ybo 9rostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at ry02po;jh hj 0mvz7 i6x = 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-mC charo7zj ip; 0 hjhv60y2mrge?

  A point charge of +Q is placed at the center wr;m:i ajr+opvh(1 9h 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 thirphrro1a(+jmih w ;9v:d charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3j a/ n)ssy0 -x:zypx:fc9 wnygn i.,n1a/t,tu0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th1/,wi9 n,n0ns.:c tyj/y-)yxnzpg xfs tu:aae 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 at (0, 0.10 m); Q 56/8rb;hbqua9dkv kp3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC c b8a;pd vqb9rk6/uh5kharge?

  Three identical charges of 3.0 mC are placed at the veyq s2fx *:.uvdrtices of an equilateral triangle.2f*y uqdvxs : which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and3ey57yi vl z11y- tlkd +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 -Q such that the electrostatic force acting on it would byi1-y7elyk d 1z3vtl5 e zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 2dyhu2q z7tvvbv1i2 i 0/f2cr4.0 m. Where on tq2h7c vid f22bvrz21it0v /uy he x-axis 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 ssq 1a3c, m-hzx = 2a. Where can a third positive charge +q be placed so that the force on it is zer 3as1szhm-q ,co?

  A copper penny has a mass of 3.0 g. A total oj1au gdgx,x0 +f $4.0 \times 10^{12} \; electrons$ 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 attractiorn;fpe(*9 kdrn of a fixed proton some distance akf (e;d* 9rprnbove it. How far above the electron is the proton?

  Two 0.20-g metal sphesw9/wt3r 2cq l6qjtrs*r5c1 wres are 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 1 2q9rr r3twstjw5ws6c/q cl *the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitujp 14 w 8k3fgewbq*.onde of the electric field at a distance of 1.0 m from the nuclgenqj31pfwow 48.b * keus?

  What are the magnitude and direction of the electric field at a distance ofs(+1 ldg2yxqsl9pqbnu b 1:wx3 t8o y( 1.50 m from ayb+8opqnlt:wb1( u 9q(gxlx21ssy d 3 50.0-nC charge?

  A 5.0-C charge is 10 m from a small r)j54r7huwm btest charge. What is the magnitude of the electric field at the locati 4j)7m hbrr5wuon of the test charge?

  A 5.0-C charge is 10 m from a small testoh*ms:s8cxrju 6h s0nl1* +kj charge. What is the direction of the elect8cm soxnsjkl61*:hr*0+ hjsu ric field?

  A 5.0-C charge is 10 m from a small test charge. What is gpoxui qp,2) c 6wix/w*w+z2cthe magnitude of the force experienc,wpwz)/u xc 2q6*g+ ip2xic owed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ou7* 7e.hcs3i. qw p+b 5vkbppgf 4.0 m. s . 57 ueb wkc.bg+p*q7ihv3pp What 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 stick and6fygis*jsxt 7l8s g*- a -4.0 mC charge is plac 6-i gjs7xgs *t*yslf8ed 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 meter stick and a -4. vj3 o+e m,c8.kvjkf)k0 mC charge is pla)8fm ov+jkkk3jv,e. cced at the 50 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 and +ok+p2l 0:wcbvd : uy n8w d(iuhq)+gnq4ytg;x = 0.20 m. What is the magnitu+ dpnb+8g 2wl4k0g:oidync;+y) (w vquh uqt:de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thry2i2:aja2/0 vb6 pswelxw z-dww5 .geee 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 of thwx:2 w5w0-.z s2wieed6 yvgpja2b a/le square.

  Consider a square which is 1.0 m on a side. Charges are pl707obp rqoflz*)bv f)aced 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). Whavb)o lqf )o077f*rp bzt is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge o96ccsrqhnly06 y r; u.f 5.0 mC when it is placed in a uniform electric field. What is the magnit9nq y .cs06u r6c;lryhude of this electric field?

  A particle with a chargu v5s11+bzga ge 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 f4f (qmkk f.6ns6gpm3 bv u:9pin an electric field of 6000 N/C point46m :fk f9vpsfkpg u3.mbq(6n ing downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries -2qwq kfqa5m ;s 7v. jqy;k dla*jlyw8w8u 7i3a charge 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 and7f d;vywq8y u-;asmk.27 il5wl*8kqaqj jw3q direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is th q* e n-q :h00)yfuyvo*zvz8nge magnitude of the electric field 5.0 cm from the f:z0evhy)g*no qvq0 *u nz -8ysphere's surface?

  A metal sphere of radiu3c3teql 5i1za s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm froiq 51al3tce 3zm the center of the sphere?