State the law of conservzoamh 78sq hw,3(f.zn9 +qxzrrs *f.nation of electric charge.

  Is it possible for two negative charges to attract eachl2mmt5v y.i*ub h.n .j other?

  Is it possible for a positive and a negative charge to attract each otherzm za3x ,*0z9afr qa7b?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac8: ;rvs+:qod,(j )pjmttr z9zy/ u1fpm 2lwzfquires a positive charge and the silk/) pj z pf tt1mdz8rsml :(uo;wq2j,9:vzyrf+

  A proton carries a

  The model of the atom shy0 :skx5ou wq,fs/-y kbq6:r qows a

  A neutral atom always a 3;,ixejzk* rhas

  An atom has more electrons tharg:m,eo/vyjg/u ,r 1r n protons. The atom is

  Materials in which the electrons are bound very tightldd 26h9;w ybedy to the nuclei are referred to h w;b9d ed2y6das

  Materials in which the electrons are bound very loosely to the nuclei d-e e fcs8l9/dand can move about f/f9e cd-sdl8ereely within the material are referred to as

  A negatively charged rod is brought near hgk /ijc8e3xxs.j))aone end of an uncharged metal bar. The end of t8a/ g )j3jescxk) xi.hhe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and y yhx,l1/ :gn iubi//9ert. iosphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct? /etyn 9.r bi/oxig/ylh1 u,:i

  How can a negatively charged rod charge an electroscope ponqpdz 31 mw:t3sitively?

  An originally neutral electroscope is briefly touched with a positively chargedjeino6 5 2q;0 : bhsd0zdhcg8k glasq5hdsk d 2c:ghneb0;06j i8zos rod. The electroscope

  An originally neutral electroscope is grounded bre,f5 gt8 czpp,iefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrfcp ,,5egtz8 poscope

  A positive object touches a neutral electroscu:uqb; 3eh.l gope, and the leaves separate. Then a negative object is brought near the electroscope, but does nhbe3u ul ;q.:got touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuxd ; y 07zj+xs oz)4qjxapf62itral 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 balldj p) izaz7;oj+2 xxqx6y0 4sf, 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 the Coulomb cke y11 ieevms.* pp.,/*z2 )clfvi i qmtd:eg(onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan2h 8 f*g no88uwfu u9v2ommfz)ce d. The first charge is larger in magnitude than the second chavmomzfof2 *h8ufw8) g2un9u 8 rge.

  Sphere A carries a net charge and sphere B is neutraz h4nbjw8( yv3l. They are placed near each other on an ihyj3vw b4zn (8nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a :5yrxmea pn; :(-ika rcertain force. If the charges on both objects are doubled with no change in separation, the m;n rxrep: :ay5 -kia(force between them

  Two charges are separated by a distance d and exert mutual attract5 ykhl8t.-zm give forces of F on each other. If the ch. lg mhzy-t8k5arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wiz z qqo15*l-vhpx:i8fth a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separaqz ipq*x5lz-1fhvo8 :tion 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 1tuke p+gi ( zq5/n92ib8*go/i.hen nt.0 m. What happens to the magnitude of the force on the proton if / q+pn2h8uii (eti* gob .g/knzt5n e9a second electron is placed next to the first electron?

  An electron and a proton ar+/j2t po cz4w; gmy*ake separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proco;j +wa 4m2zpyg tk*/ton?

  An electron and a proton are separated by a distance of 1.64 vnibpb a 4wf34tk+k0 m. What happens to the size of the force on the proton if the w+ v6ap i4bkf44bktn3 electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plg )lq0wdsji i*-+qc0m aced 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 j0wm0icq gqisd*l +)- center of the square?

  A point charge of +Q is placed at the centroid of an equilateral t 00pf*bupkxdl tc:n6 0riangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of c0 d :0nxubp*lpt6 fk04.0 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 noscm:; xv.-hrh t a vector?

  At twice the distance from a point charge, the strength of the electric fielc0+9: xdd +t:v1erunib6 mxou d

  Is it possible to have a zero electric field value zk),4g0k t/zplaq o -rbetween a negative and positive pzkz-o4a0k )t grlq,/charge along the line joining the two charges?

  Is it possible to have a zero electricl4a7gng3ih q-s md1 .q field value between two positive charges along gh1 ql3sq.nm- ai 4d7gthe line joining the two charges?

  Electric field linesa zkpvuw t5 h f:.j2z*;di5(ya near psitive point charges

  The electric field showniy1*z ;z0kzz bj4ck) s

  Can electric field line7uih *3kkhdy+ h9rwdn aulg .918kz2es intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elp1 ow 32*lqf1ee58 sljr ,schdectric fieldll* ,8sp sjhodrqf2e 1e 1c5w3. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere p;yv3rec75p k i)z8gds+:vn zf8v sv(and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the 3e;v)nfvzsg 87 sp+8y :(div5rc vpkz surface is

  A cubic block of aluminum rests on a w;ndl29blf5 alooden table in a region where a uniform electric field is directed strailf;bal nl952d ght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ak3uq+q c 3ho4 3fk *lf7yt4whan electric charge

  A positive point charge is enclosed in a hollow ukpi3sy ,yx 6 ev1ahsc-- uj7:metallic sphere that is grounded. As compared to the case without the hol-ja1kxi y7,psh6y-vu:e3cs ulow sphere, the electric field at a point directly above the hollow sphere has

State three propertieq93 0ciz o: hbgpn*sp(s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is biq.ix( xo4 rh( 3arp jsy:,/m$e = -1.6 \times 10^{-19} \; C$. 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. How8p 5j7ir82 q hio;pjon many more protons than electrons does this piece of n 8ijh;8oqpi25r ojp7plastic have?

  What is the charge o6x/ e t.vp:mz ckpg-4hn 1 kg of protons?

  An atomic nucleus has a charge ok mk-e8a,u f-1sdnu6vgt.-m of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep6hcz80b)stc e arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between 0t) 86hs beczcthem?

  A 1.0-C charge is 15 m from a second charge, ana 6r3u1v(oc-4rwy s6l9hai rg d the force between them is 1.0 N. What is the magnitude of the second chag v-lr rhrs6 aywo6ui34 c(1a9rge?

  Two 1.0-C charges have a fooi:t m /v45nprw -ygf;rce between them of 1.0 N. How far apart are they?

  The force between a 80k ruux4d rrk+7ic 2rsm :av)$30 \; mC$ 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 fonkt 1or0h gbo1g- o)(arce. If they are moved to a new separation of og1og0ar t k)bn1oh-( 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0f5yrz;(4ub lb 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 electro5ubl4zf (r;y bstatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed ae,y*w . smjv3ht the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at 3m,vhyws. *ejthe 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 followin8q 36)l19mi s wvbul1rtyd *gkg 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. Whatw ur 1d klqit19sg)6lv 38*ybm is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a syhj-c aki x6.c0ytn;*d s*dn7 quare, 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 magn*kyn0 sxj -cd;t. 6 *nycah7iditude 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, 0.10 m); Q3 +1 v.cby3 ( b+wp 3ufs4rvnews= 5.0 nC is at (0, 0). What is the m3esyb+vwwr p3f (uc. s+n1v4b agnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = xbztzdb1 pv9 d8hgga9 62 :am(-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 9dd p6:bx 9 (hzbggatz1 m2va8What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plac,bgoy;u5stq ,-bvd6 us s.q/x. c0ks yed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the muss5txds 6q.-;/, s0 cg.yvbyo,q ubkagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.g551 hmp ysa,m mj blha.-6dkq. d3ax1 At what point, on a line between kah.6bmm35 p h sa,.1dj5gy a dxm-q1lthe 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 a +9.0- 4esv, 3xlho4rC charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeh,o4r xl3 se4vro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can fv 2.9 wv09xcj/d soj51fxueb a third positive charge +q be placed so that the ffsvb e05x/9c uwjx v.9jd21o force on it is zero?

  A copper penny has a mass oya *4+vw)fy nkqw*3h nf 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 kdda+-m)7vvi gravity by the attraction of a fixed proton some distance above it7m i-v+dv)dka . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc)suj8 7ek8cjqting threads which c88je sk)7qujare 30 cm long. Both are given 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 chny68li :9h(u,kfdn(yresh+ np6 )i.)q nnrlharge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from 86eypn, :f9lihn nhrs.yqiu6lhn dk( n)+(r) the nucleus?

  What are the magnitude and direction of the electric fn,wwk42sq g8 o2gj:omhrr g,,ield at a distance of 1.50 m from a 50.0-nC chog8 n,2hwkjo 4r,:rg,qm wgs 2arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudent(-z0amxpy 0,2((mqzw dt vw.dxgi 8 of the electric field at the locat mqp.gi t(-0tz mn(vd,0y82wxdxa(wzion of the test charge?

  A 5.0-C charge is 10 ;b.vnltm.29khf 1 7 smu+pzkwm from a small test charge. What is the direction of the electrtvb.72p1u+ zw s .mmkhn9k;lf ic field?

  A 5.0-C charge is 10 :+-tc 8dsos 4t 0cdlo8tvfm :tm from a small test charge. What is the magnitude of the force experiencedf+o-:d4 tdsm:0 s8cv8t clott 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 di;3w vgsvr9b wx j ntp *23py;8ghp*u4fstance of 4.0 m. What ishf;;4vg8g*p wruyt s v*px9w pn32b3j the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m; -;xed 7,x/+9vbymqti fjyvbark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 /;y-e;mj 7vxy+ tx,q9i vdfbbcm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metermb yj9k h2*i9d8lk2vk stick and a -4.0 mC charge is placed8 blmi9ykkj*9 2 v2hkd 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 x ./j ji*sf f1*iu ,nv0 wpu5z/ mgk/nkc= 0.20 m. What is the magnitude of the electric fik vffp/n .j zjm/niw k *gu,0*1suc5i/eld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squau hgaa gozn kn *x,-p/)dg.8q9re of side 0.50 m. The last corner g*d q.agxnunpo 8ahkgz-,)9/ 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 placed at th+x bqsm f r0yzex-15m-e corners of the square as follows: +4.0 mCy+bfxe10r s -5 zx-mmq 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 chartx6gln 2/pdej nsj58-ge of 5.0 mC when it is placed in a uniform electric field. What gnej x6sljn 2-t8 5dp/is the magnitude of this electric field?

  A particle with a charge of 4.0 mht j)btgz u* fthsv4 4a70u1z4u;.tvwC 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 elec5ip/(vf1 u drqnrq g12:jbh4dw2s5ygtric field of 6000 N/C pointing downward. What charge ms 12d45un(bg :ri 2fpvdqjgry1q wh/5ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.15avj(n / uo:ydkfl;xq34**ozl 0 g carries a 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 max;jzk f:y3(o ** 4un/ dvqollagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. l 74zy sbg1grt*gk1b1fx4* l i What is the magnitude of the elyg llg*g 1411*7itxkbsz4 fbrectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries at mu :o6ry5 4pl5p3sqy charge of 3.0 mC. What is the electric field 6.0 cm from the centps yloru:y55 4mp6t3qer of the sphere?