State the law of conservaglkwcz ,bbc 4 a:t-6t0tion of electric charge.

  Is it possible for two negative4y 1p bbuk9ev0 charges to attract each other?

  Is it possible for a positive and a negative charge to attract each ot9j51dba1;sk,xr a exjpms sk+ y,, d,lher?

  A glass rod is rubbed with a piece of silk. During the process the glass zses/h faqll f+ (4q2;rod acquires a positive ch+s /qla4h;e2s lqffz( arge and the silk

  A proton carries a

  The model of the atom shaon ar 6rnj/:4az,dr: ows a

  A neutral atom alwaysoh4*klb( : fd;h -vbvsftkk) ; has

  An atom has more electrons than protons. The a)u.vcd yr.a.y tom is

  Materials in which the electrons are bound very tightly to the nuc3wzjn ;m+7-rrku f 8*,j xsdholei are referredjo-mzh* 7k8wud+r xs, ;3rfjn to as

  Materials in which the electrons are bound very b;kuf4+b sj6 rpv 6 f--wxqr*gloosely to the nuclei and can move about freely within the material are referred to fkr+;qg-fxr v4-ju6pbb sw *6as

  A negatively charged rod is brsa6jeokmio/6 )g7 2io ought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be 66goo kmes jia /2)7oicharged

  Sphere A carries a net positive charge, and sphere B iif7hzw +, inx2s 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 corrin , 2wxzfh7i+ect?

  How can a negatively charged rod charge an electromo -m39o q6uw vqq8pk nm:jr83r+ 2;veve6n bmscope positively?

  An originally neutral electroscope 9j: kynr a7b.qumk+-9narr.lis briefly touched with a positively charged glass rod. The electrosc7ka.+ qb9rkru a.9n r l-ymj:nope

  An originally neutral electroscope is grounded briefly while a posid-s3g);f ldhctively charged glass rod is held near it. After the glass schf; l-ddg3) rod is removed, the electroscope

  A positive object touches a neutral electroscope, andd x;,sl c7;m7ir iimr+(6u-bkr-1rk jzktr5w the leaves separate. Then a negative object is brougimr 6strwd,zkbxi -;l5 jm7rk (1cr+iur-7k;ht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ab8zc)lst+ u ces,up: u; 9e2 e:1yyldis placed on an insulated 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 not touch the negative object. At no time does 9)tsuca+:up,z ;yeldu ye8 s2bc 1e:l either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constk efw q1f k:x0:2/acr63 jzbmxant $k$, which appears in Coulomb's law?

  Two charged objects )ex: r6ans7xa are separated by a distance d. The first charge is larger in mrxs xeaa 6n7):agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are ply-awrl+tl o.)7 hc rv1xi,5aoaced near each other on an insulated table51, . o-oraay)t7x+ rlwiv hlc. Which statement best describes the electrostatic force between them?

  Two charged objects attract eacubcqvx ,c0olk2+ 77cgq6ixx5h other with a certain force. If the charges on both objects are doubled with no change in separation, the f76lkuqigv25q+o xxc7c 0bx,c orce between them

  Two charges are separated by a distance d and exert mutu )wz2k3 k+uko9p ebj7y,+mvtmeab3 r8 al attractive forces of F on each other. If the charges are separated by a distance o7w2a j3 vm8pe kbu 3+mz)r9okeky+,t bf d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forcv;ri)y55c( 7gw(n alhdz c2+ksx f3fpe between them if one 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 equalfy(7f)dvw2 +zslr 5;h5g kn3icpa cx( to

  An electron and a proton are separated 3- j5jy )byqgqby a distance of 1.0 m. What happens to the magnitud5 yqb-j)gq3 yje of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dista:9y vd6:* u xmd/lnkznnce of 1.0 m. What happens to the magnitude of the for/d:kd : l9 yn6x*umnzvce 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 +/t t.qxe oz4qhappens to the size of the force on the proton if the electron is movqo4te.tzx+/ qed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a si( n;pr,7db-y 1ubcudaizf;3 quare. 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 ch dd3(uabci r7;inz b,p u1f-;yarges 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:c1z i4rcrf *l the centroid of an equilateral triangle. 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 of the force that actsflccr*r: i4 1z on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is i g ua+)k2+ybvnot a vector?

  At twice the distance from a point+gtb 8wvfr-a: *j z uqwf1;w+a charge, the strength of the electric field

  Is it possible to have a ze/w n/mpn7 fpg)a )pxv1ro electric field value between a negative and positive charge aln/p)n 1/p)wgmfa7x pv ong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charge-qgr .songyp8) o.k -8wcur 6rs along the line joining t rcn6o8)gyr8-qs-rwp okg..uhe two charges?

  Electric field lines near psitive point charg6q8, f bp ym;ul9lxk:aes

  The electric field shs.l,fttcqsh co d) 378own

  Can electric field lines intersect injhrc ,y/q u9 (7-kp 5m+mjah rzst5jr, free space?

  A solid block of metal in electrostat :d+r:lrhbuw1q/pwez wzd (c/ flm54 5ic equilibrium is placed in a uniform electqlp(f/dz+: 15 l4we 5h:/b wzdmrucrwric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of8nhubofgvgv :ta)r.n,2(amw yl ):* k equal diameters are each given the same charge, the elecvgtbo.:(y a2 g)n* :,l) muvnwrh fa8ktric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooifw1yqx8 -z d1den table in a region where a uniform electric field is directed straight upward. What can be said concerning the8-zfw dqy 11xi charge on the block's top surface?

  If a conductor is in electrostatic equilibrwv qdr831djn0l 3cpx+ium near an electric charge

  A positive point charge iynm-qxpw , ;4,va*tpp *m(yh ts enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above ,ypyx*nht*vppw(atm,; m-4qthe hollow sphere has

State three properties of conductobu4gi fi7 hj+hj7x4t-rs in static equilibrium.

State Gauss's law.

  The charge carried by one electr 57cqossl,rmayj5+; ron 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 proto0oz2k 5qm si /(7d9w(lw vzqlvns than electrons does this piece of plastic hsz(d25wq/v0qolwm 7 zkl ( 9viave?

  What is the charge on 1 kg of *bvk,chv)-ah- 4 x uwuprotons?

  An atomic nucleus hasbcyvy ,jg8gfxg8,+o0q1o m e 2mw 72fx 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 1.5 cm, have charge valu4.b)pcynvxc :.+ v)lk m7nfp jes of 2.0 and -4.0 mC, respectively. What is the magn:+)v7nl4nm)jvy .f pc.bkxpc itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweey0 4lp.r1bkp un them is 1.0 N. What is the magnitude of the second charge?lr4pp b.k1y 0u

  Two 1.0-C charges have a force between them7p d0hy md.un4 of 1.0 N. How far apart are they?

  The force between a esj-;l )h3 rbmrw)ct ;4sui6.ky2gt h$30 \; mC$ 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 fo+dezhr2 *-qp xrce. If they are moved to a ne*-xdr+2h qepz w 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-fcoym12 (n tf: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 to (fmf1c nt2:yhe 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 mC is pf9:f ,ahxrq a .7/tl n4nzm4ye 9-rixolaced 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 an,xmnhn4qff97zar a.-:oer9xi l y t 4/d direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atti:;qs1) r pgp x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC qg) p ;:ipsr1tat 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 bsav)+ 2ej(crcwmt4cc.z (c;center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elecr4;wtsac)cec((+ c2vbjcm .ztrostatic 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 = rj-8k02toyb * zj7s,nwy+u ic-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on th*c w by8u-7zr+yjtknsi j, 0o2e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1zw t /zct0p(e; irvx(4.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). tz (c0vx4et;pw(i z/r 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 verff vhg4y +w2*utices of an equilateral triangle which measures 30 cm on a side. Wha fhg 2uv4w*y+ft is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargesp 40zxk-ocak q m(-s kjpv -en-0w+jm, of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be em vjw 0a+-okcp(ksn-kq-z x-m jp0, 4possible 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/ela 1grqm2.p origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net /.g1qmrl2p ea force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.)n,smrhu . wu(-njp,-anr3kwdph y 9+6y/c tx Where can a third positive charge +q be placc+ wy/,6-prndynk(-,j p 3.stx9ua rh wmh)uned so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total hg f,q8ls ix36of $4.0 \times 10^{12} \; electrons$ 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 az0y(w 8 6/kzhz2 vtpeagainst the force of gravity by the attraction of a fixed proton some distance above it. How f/2ae 6vw8hz 0 kzzpy(tar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting ;3wnpnmon;m8v,v3 ow threads which are 30 cm long. Both are given identical charges, and t;nwp 8o ;w,nvo m3v3mnhe 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 i17t-h)x sdes magnitude of the electric field at a)t7si edx-h 1s distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.50-w i nidxn4vgpvvxu(+v .*)ex *1/ini m from a 50.0-n4 nvx(1dxve xig u.ivvpi)+i -n**w/nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is theee vcd-c nk,.aarbe./ -+zj- v magnitude of the electric field at the location of the test charge?.a,ec c-+re.- k ebdvnajz/v-

  A 5.0-C charge is 10 m from a small tertlf0y2jvkt8ggr f.,a+:m(b st charge. What is the direction of the electric f:8+ 0rfgfb.ayt(j2rvg,tkl mield?

  A 5.0-C charge is 10 m from a sb: dn wx7-pbe(m9g sr-mall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thewm-xseb:( r bndpg9- 7 test charge?

  Two point charges each have a value of 3.0 C and are separated by a d *lcaz4.n eoa2istance of 4.0 m. What is the electric field at a point midway between the two za*lae. onc 24charges?

  A 5.0-mC charge is placed at j d*h,4dgptwj 8n:1jp the 0 cm mark 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 c*:ngwh1jj t p8d,pd4j m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and 4it ye+/c:req a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric y/er ei+qt :c4field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x 7 r:pedm3y2kyha gf+3 = 0 and x = 0.20 m. What is73pe:yh rf2k+3ad gy m 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 silmah/2v.s2r 8898wyiyfnmv n de 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of thyy 9m/mvasl ih8.n8vn822 w fre square.

  Consider a square which is 1.0 m on a sipgsw7)pb1 wy 8de. Charges are placed 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 wy7bp1spw8g ), 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 surs3 8a2+v* fomvpc,6*i v bjx(yjm5 on a charge of 5.0 mC when it is placed in a uniform electric field. What is *joxu6b,yivr(a * 2ps83vfsm +vc5 jmthe magnitude of this electric field?

  A particle with a chvk:;5ew 6s/ h(qkwyxt p/7ybrarge 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 y zt w3yv8/qr0electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to bey/3r8tvy qz w0 suspended?

  A foam ball of mass 0.150 g carries a charwy )i6ht8:/harm e(u+zidb fl-.hf k)a p)ae+ge 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 and direction of the electric fiez te+ufb):am)(k+h)deplya/fw .r6a ihh -8 i ld?

  A metal sphere of radius 10 cm carries a charge ph v,.*izy*w wof +2.0 mC. What is the magnitude of the electric field 5.0 **y pv,h. iwzwcm from the sphere's surface?

  A metal sphere of radispibs5 6. kwj +xgex*-us 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the+wsjx5pe 6g*.ixb- sk sphere?