State the law of conserva)6s)puagfbs)q; dl, gtion of electric charge.

  Is it possible for two negmb1/ (d( ;r1zo qxpm*.2rmazjwbqm*aative charges to attract each other?

  Is it possible for a positivvxfs go 1q2a wowz. l5z28.ef1e and a negative charge to attract each other?

  A glass rod is rubbe0ewui+xy . lv -cwl16.p1hxvxd with a piece of silk. During the process the glass rod acquires a posit vu-1weh .0x.px x6v+wc yll1iive charge and the silk

  A proton carries a

  The model of the atom shye8 n ug5wx+-zows a

  A neutral atom always wqc eun* *; 6xtmon6)ahas

  An atom has more electrons than protons. mus sm*o hsc+hs-(,(a The atom is

  Materials in which the o)3 6fhcnvt41xu( ilhelectrons are bound very tightly to the nuclei are referred 4tcuh361 xv) ihonfl(to as

  Materials in which the electrons are bound very looseu)rv6,5yt usk.7u i/u+aacl ely to the nuclei and can move about freel+ca tu slv,6euu5y k .riu)7/ay within the material are referred to as

  A negatively charged rod is brought near one end of an unchar05c/r tgq1i (tg1d ff2i5iarwged metal bar. The end of therrc12 w/t fg501i(dgfit5a qi metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne-(+ow f:jfccg(d z;zkutral. They are placed nezf -(f czo+k(:;cj wdgar each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charc z/k3 9 -epoqfx,z)ukge an electroscope positively?

  An originally neutral elect0izo)rm(moemga61y dz 7 v:g* roscope is briefly touched with a positively charged glass m0 (6mgyva*1rd):7mgioe zzo rod. The electroscope

  An originally neutral electroscope -lt7f7i 7l mm* u5(oi;oxtpvuis grounded briefly while a positively charged glass rod il;ofipt*m ux tio57-l 7 7(vmus held near it. After the glass rod is removed, the electroscope

  A positive object touches a neuc.fvx+ g2y/m1q m -uactral electroscope, and the leaves separate. Then a negative object is brought neaf/x1+m mgvy u cqa2.-cr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablg u7z8i+ f4ny0 knn+wue. 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 is t0w i7u+nun+gfy knz4 8he final charge on each ball?

  Charge is

  What are the units of the Coulomb constantt90:0csk )rlbgdy+nt $k$, which appears in Coulomb's law?

  Two charged objects are separat5j dnuho) r ,kpi2r+i7 oytni;2r11wp ed by a distance d. The first charge is larger in magnitude th wpi7j,i2 1+ rn5 )pi;rh dokrtyn2u1oan the second charge.

  Sphere A carries a net charge and sphere B is neutr cqoo66eq4b2y9hpwmcho. (- ral. They are placed near each other q 6o.-ooye r(h9m2pcq ch4 6bwon an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a lh0 xa2s82+av hhg6a mcertain force. If the charges on both objects are doubled with no change in sepa 6 +xv 02gshamh82alahration, the force between them

  Two charges are separated by a distance d and exert mutual ec5- gpy;9vx0fce1x dattractive forces of F on each other. If the charges are sfvp-ycxd0c e1 ;x9 e5geparated by a distance of d/3, what are the new mutual forces?

  Two charged objects atddw81 rnequvzu uhc,j ,9/s;-zp(:gatract each other with a force F. What happens to the force between them if ousu pnwjed8( 1rzg9 ,vuca-z;h,:q d/ne charge is doubled, 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. W8v*rrnyw t t4.hat happens to the magnitude of the force on the proton if a second electron is placed next to the firsv4rr .wty*8nt t electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to o b- *ub.vo :w;*xj-iex*l pic;d h5owthe magnitude of the force on the first electron if a secbwl oc-*p5ij*wx ho:.dv;i;e-*u obx ond electron is placed next to the proton?

  An electron and a proton are separated by a distancedwdq4 3p,wf;h of 1.0 m. What happens to the size of the force on the proton if the electron is mov4 d;wq 3f,dhwped 0.50 m closer to the proton?

  A point charge of +Q is plac6ittu3 lt9q7i5zair 4 ed at the center of 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. What is the magnitude of the net electrostatic force acting on the positive charge at the cet trl6i43u 9 5ia7tizqnter of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangleeeo.f; lo(p8v;*pkb+fffn2bg7i4 ig . 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 ofi f7 nl.bi 2;bp ef+ v;4ogp*8koef(gf 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 iu is wxai* ai zj2ma576uz*m-/s not a vector?

  At twice the distance from a point charge, the strength of thto8: nfk i2vd+e electric field

  Is it possible to have a zero electric field value between a negative and posxc 3 wgd6q9dn3s.6 xvbitive charge6.9d 3 dqng xvbs6wcx3 along the line joining the two charges?

  Is it possible to have a zero electric fiekt sym3/;yd9nq r:*v lld value between two positive charges along the line joining the two chargesn;mdytrl/9 3*q:kv y s?

  Electric field lines neagrhcv4b 0ft7/x ut.l/c,x, qmr psitive point charges

  The electric field svtv+. 95yx*f l7m jxo,1lomn6:qxtg .cpg xt,hown

  Can electric field lines intersect ibil7jju exbs9cq9w+/ 9wbmf z 7/bo)8n free space?

  A solid block of metal in electroy6fdh) sgw* g, g*gjz.static equilibrium is placed in a uniform electric field. Give a statement g*h.f,jggz)*y sgw6 d concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o2tzfakb,z 1./4oc gaz k+i4 fxf equal diameters are each given the same charge, the electric field (E) midway between t24k .4c+ gfbixzok1aa,tzz/fhe center and the surface is

  A cubic block of aluminum rests oc8qn5l*ba :q on a wooden table in a region where a uniform electric field is directed st b5q 8acq:*lonraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi: n o rsvho-g*79c,xvtlibrium near an electric charge

  A positive point charge is enclosed in a hollo6ri f4a9bpucf(43o7 8 8bkk f r-hbsqlw metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the fl 8f-4o bau78qhi(rb fc 43 kb9ksp6rhollow sphere has

State three properties of xvmgv)j ,8gnt(3:4eygpj(u w conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecmxgj 7m4val8- l+ja*j(0ega ttron 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 more protonspc.qa ,+hf 8h/nh()u 2s npvfo than electrons does t2q.ff p/o +uch,asnv(hn )p8h his piece of plastic have?

  What is the charge otid j /c41t2.b0di kosn 1 kg of protons?

  An atomic nucleus has a charge of+7v;vji5vua mdic -,p $+40e$. 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 -f yow6g/-7 dxj(4hdeaj p uk28it .k.w4.0 mC, respectively. What is the magnitude of the electric force between them?wd/ 6yxu2.8.g ht-kwpaei 47dofjkj(

  A 1.0-C charge is 15 m from u-/ y*a ck lya (jqa44;vfix8d8c +bnua second charge, and the force between them is 1.0 N.ucj4yiv; *xdn /b8a k 8l-(4faucy+aq What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are ,/rn u + .iuotnx8:i) bjno1sjthey?

  The force between a f/ny-l pyn))+z s/n.sb ryut5 /i 2kjt$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, imqr2bq/7s3km xl ( yzmu lb8+7nitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what ism (7k/m8 ym x7qlbs+r3lzu2bq the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chm ,ld-lecce7-arge is at the origin, the l, ccl--emde7 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?

  Three point charges are placed on the x-axis. A chargr1ryogf1u( wt1 6t+jae of +2.0 mC is placed at the origin, -2.0 m C to t1a1ryjg truw6f1(t o+ he 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 arvdqw re)wny:.p5 q;/j e located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a5reqq :y/)v npdwjw;.t 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 cgl ge :zy.be5,enter 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:, ggzlbe 5ey. 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 (0,1 jjzt8he0)cr 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the j8e)c0jh 1rz tmagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 mrk:61 te6zp6 ht 6xtoo, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the di:6h6 te66zp k1trtxoorection of the net force on the 5.0 nC charge?

  Three identical charges of 3.k q tyo4w .61f5ee m: ,gxm4ajhcz(am,0 mC are placed 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 one of the chahwa (. f:54xe atmje ok mmqy,gc1,z64rges?

  Consider point charges of 2) ur,ifkc0q p+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two chapu,i2)k crfq0rges, 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 cha+1dulpk g1jh8rge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nu1kpg +81jd lhet force on it is zero?

  Charge +2q is placed at the origin and charge -q ixva d9i( x- + te7iu6edx0kh1fs placed at x = 2a. Where can a third positive charge +q be placed so t- 1(h07 evdix adki+x9u texf6hat the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot6ly *) tbfwt 6gtgu7b(al 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 agc81oxleb )3xfainst the force of gravity by the attraction of a fixed proton some e8o3)l xx1bf cdistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point8:o4hb2m1ht:m1wqj5*pb/mh d gk hm m by nonconducting threads which are 30 cm long. Both are given identical charges, hqhm m*/mmjt1 bd 8:hw45: opkmhbg12and 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 the electr+(g.n5zsn*nmps r83ps jlv * vic field at a distance of 1.0 m from the n*p v 5vzs(rmnl3pj *gn8n.s+sucleus?

  What are the magnitude and direction of oi wlf0+ipex:s2d798o f:pzf the electric field at a distance of 1.50 m f8ps+ fo o9fx:depli:20zfwi7rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whafvl7z *x8uk+ ut is the magnitude of the electric field at the location of the test c *zlxufkv+7 u8harge?

  A 5.0-C charge is 10 m from a small test charge. Whatt.n rrk.u1(v bv )eu9 c.ff3rt is the direction of the electric field?.rf.b)k(rv.v 1ur 9tut en3cf

  A 5.0-C charge is 10 m from a small test charge.f0v r g*n,2yvp What is the magnitude of the force experienced by a 1. rpg,n2vy* 0fv0 nC charge placed at the location of the test charge?

  Two point charges each have a valuieb1.;-3p; pl5agtsr uqep ,4un(pzqe of 3.0 C and are separated by a distance of 4.0 m. r aupuip(q3bp-1.s 4;eg5tp;e, n zlq 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 stickjkei4 y/ 2cwm* and a -4.0 mC charge is placed at the 50 cm mark. What is the electric m c2y4e/i*wkjfield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 72r7oy*vj e1ve r9erzand a -4.0 mC charge is placed at the 50 cm mark. At what point on7ovr9*z17 erv2yre je a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed 8pou3 qg llj5s/2ta 0ybg2pk *at x = 0 and x = 0.20 m. What isp3l j*2tyb / 8ku5aqgo2spg0 l the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. o /kje*3ppcfgj+wc 18 sma2 y9The last corner is occupiep/ cy jw2jeg+3* 8pmc9sfo1akd 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 ay/bbs3q1 s/d (mcjkb/ w/otlijq7 - )bt 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 magnitude of the electric field at the square' s-//)q/cwib yj/qjos17tkldb b(3mbs center?

  A force of 10 N acts on a chanlw75 ec/ g6ag c(iib 1/f87 hg6n4jlx: rdbgfrge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this ellxibbg(6g ccdj7rf75e/fa h4:li /w gn6g 1n8ectric field?

  A particle with a charge of yxs 6 py1*cmz: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 electrichqe44edix g,cf6d; -1(xmr q j field of 6000 N/C pointing downward.re xh46(degd jq1m-4f;i,q xc What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150tb;r8c9g;x :i cv7t du g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended c ; rit9dgc;x8tbv 7u:against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a z2 h5k;cieq *vrkn,v4charge of +2.0 mC. What is the magnitu nk*2izk 5qc;e, vr4vhde of the 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. 23 tzk6 23e4jkb zmejn What is the electric field 6.0 cm from the centej tem4z23 jn2bz k3k6er of the sphere?