State the law of conservation ofaxa-)tb( q/ uq electric charge.

  Is it possible for two negative ch /bz,.grcp* 5+o/)w rsgy oxhbarges to attract each other?

  Is it possible for a positive and a negatibw*q0ym rwe;v8- bo)m ve charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thd1r bk:5 n2v3w,mci yee glass rod acquires a positive c3wkvy rci,dbem: n521harge and the silk

  A proton carries a

  The model of the atom shkmd o bq6-a)pb0k.7 o b2rx:foows a

  A neutral atom always ozif/prm ;v n;kg pyi,: ,gl..has

  An atom has more elej1h7s ;zuufj8 ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the q1zn q-fe rz.u04jbc9nuclei are referred ton cjbfq u-z9r 0z.qe41 as

  Materials in which the electrons are bog08bn 8 3 gx 1y8a m6ln7e.,kiqqlisdaund very loosely to the nuclei and can move aboul16ynmei,k 3qi nag dls.88x0ab7q8g t freely within the material are referred to as

  A negatively charged rod imhcy(3.z hi9f (netzh3( sd8zs brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargedd ce(zi zm( h33th yzsf.9n8(h

  Sphere A carries a net positive charge, 8 7.6yy mfk0e j hve00ej0auavand sphere B is neutral. They are placed near each other on an insul 7eyjyu.0f08a kham0 ee 0j6vvated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrq u.o-l.v cj(zoscope positively?

  An originally neutral electroscope is briefly touched with a po.ow/cf0d.9 3aim imr rsitively charged glass ro .c9mm3io./frw dair0d. The electroscope

  An originally neutral electroscope is grounded briefly whi6 m+mk6:wafzl le a positively charged6lawz6m :+ mkf glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral eltac6i hqew)k m7u(ilc+hi/ 4 1ectroscope, and the leaves separate. Then a negative object is brought near the electrosc+/ hl7k c)echuia6wm1ii (qt 4ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is 4okdq+h imf,3) c*csu3c* d+ 5iqgbnnplaced 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 thei++ k*d4snoim3b5n*quc, cdc3qf h) g 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 os10d8+krgisntb; 5q tf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separah2 m:sg2izvsvvpw - 3*;pk;rrted by a distance d. The first charge is larger i22is pw-3z m:rvr;sph;v k g*vn magnitude than the second charge.

  Sphere A carries a net charge a1ifizo((3- nwa/i rvtnd sphere B is neutral. They are placed near each other on an insulated table. Which stat a-ioi 31/fnv(i(zwtr ement best describes the electrostatic force between them?

  Two charged objects attract o dgjd3k8 :tqc63ot1qeach other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwt3t:8 6dq g1kojd q3coeen them

  Two charges are separated by a distance d and exert mutualq qxtgu,sxf. m48. z2t5kfl8 v attractive forces of F on each other. If the char f. ktsqqx .vtxf8,4zgm85ul2ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens t pb8:kt:1xb ilo the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to on8lbtp ikx: :b1e-fourth its original value? The force is now equal to

  An electron and a proto op9cv)*p :phmg1 sm(vn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plac:vpg m)1h( cv*9sppom ed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What +xblxt- 0ujv(s 8fxa; happens to the magnitude of the force on the first electron if aja-xvltf;x0 sub+ 8(x second electron is placed next to the proton?

  An electron and a proton are separated by a disa9qa30*9 izkingjcb08m8x oh tance of 1.0 m. What happens to the size oagh q 80i8m9a k*x9jcn03iobzf the force 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 of jkm;2x+ ke cc6- lh, dumi90jna square. When a second point charge of -Q is placedhe-m miul6j;9ck0n x,k+j c 2d 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 placed at the centroi49hvj k.u jhvef vx:12d 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 acts on the center charge due to a third charge of +Q plav2 v 9hx1k:j4hve .ufjced at one of the other vertices?

  Which of the following is n-7 0hkz ha0wzuy8wes7qt916 zhg :xxe ot a vector?

  At twice the distance from a point charge, the s 4mz i2fguph 4n56 p8e3lty6qhtrength of the electric field

  Is it possible to have a zero electric field value h9tue ./nk:na v(bx+ebetween a negative and positive charge along the line joining the two chargekxe /nhte( u9+.ban v:s?

  Is it possible to have a zero electric field value between two positive ch 6:je*3 one n ,8dht;qcn jp,u7i0neacarges along the line joining the ee7aicc nj,p,njqet u6803n;h dno *:two charges?

  Electric field lines neam lz yyvrm sf)ke 4ypt i21z1(5vuv8-8r psitive point charges

  The electric field showne6c0k jjv;dk 7yn:q-f

  Can electric field lines intgalhb q;y ;9*versect in free space?

  A solid block of metal in electrostatic equilibrium is pl0g nte6gz; xy6aced in a uniform electric field. Give a statement concerning the electric fieldgxtzn 6;6yeg0 in the block's interior.

  If a solid metal sphere and a 05:mcy8xuxdzuthmq g t ,;0 p/hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the ce5xdqux8 zt,y /mp:hm;cg0 u0t nter and the surface is

  A cubic block of aluminum rests on8zoj5+vvq. yz a wooden table in a region where a uniform electric field ijz8 .z oy5qv+vs directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nevvob68bo:(cw eh ::ot ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gwffrvd cl3l j9y)z97p :w-p 9yrounded. As compared to the case without the hollow sphere, the electric field vy9-jf)wyrp9d: p7w9ll z3fcat a point directly above the hollow sphere has

State three properties i em 4w*o1xi6fq-os 5rof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is- o94wch4 xvldm1z0mz $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has abe-,3 tn h;ibjao j/0x net charge of +2.00 mC. How many more protons than electrons doeoib-,b xt 3/ne;jjah0 s this piece of plastic have?

  What is the charge on 1 kg og3k+l8n3oavx,iz9c l ,38oku fg dvp3 f protons?

  An atomic nucleus has a charpq(,,gpkc dt7ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.ob xn(oe8bc7ovdqu04n-4qx2 5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the x4v42x7oc (ob quon0nqd -e 8belectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force b-7k/nlrtfnqm/ +tt 8metween them is 1.0 N. What is the magf mn+-l8t7kqm/r/tt nnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fag5j3ek mr3o 6ar apart are they?

  The force between a 21fbclo 0ren ($30 \; mC$ 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 ff;);g(ju1k *tkm vgxc orce. If they are moved to a new separation of 8.0 cm, what is the electric force between1 j(;mvxkf*g )ukg t;c them?

  Three identical poinopkbt6 ux*;6uyk- 0nct charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rit6b;uckyn60ku po-* xght 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 charge of +2.0 mC is place*u(g(9j yn v ug18hptjd at the origin, -2.0 m C to the rightnjgj t(v ypuh(*81u 9g 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 are lo/9+/0kkxl;5 cjsl uzjy/)wmijy yr g5cated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.0yr) 5/jk9j+ / c 0gj;w ym5kslyz/uxil0 mC at 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 center of a square, and a seco+3/gjgt+u0v;dz lke xnd 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 third charge of -Q/jx0z g+uvgtl+ k3e;d is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 i67hv )e53neuea-q hqnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the maenev53u-ihheq7q ) a 6gnitude 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, 07yet6l e p// jif55nlk.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ofjp5i5l/ 7kentyfe / 6l the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl4hh *hmxqtd b8r5,y(po;ue 1raced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts orqoe5 ,y ;x1pbr*48mhd hut( hn any one of the charges?

  Consider point charges of +Q and +4Q, which are separated k;r qp6 ol.h+emoun.42w d uj0by 3.0 m. At what point, on a line between the two charges, would it be po+k e.o.ld ;0wh4ump qjr62onussible 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 y 2k2hfdo2,w p5g e-bsxuho93and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third c hbxo gs5yk2uf 9,dhe -22w3opharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placibpp h2+9 f,mfed at x = 2a. Where can a third positivef m,9bpp+if2h charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of bmfy 839wn;k c$4.0 \times 10^{12} \; electrons$ 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 agains)39 srjqnp 4 ginf0oi(t the force of gravity by the attraction of a fixed proton some distance abovep3is( 9nf )ig04nrjqo it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common po-j f mvjyz0-qpacf-1;int by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them ;j z-qjf- cay-1fmp0v 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 tl v)qz0djn r9 irto3vw.9r.unj7. l) s-z-an zhe magnitude of the electric field at a distance of 1.0 m from the nun-aldlntr.zv 0jnsr i)r9o9.wvuq-.j z3z7 )cleus?

  What are the magnitude and dire,gcd5p dg y*av y o/h50bdc;d1ction of the electric field at a distance of 1.50 m from a 50/1dd0*o5gpb; cydad hc vy ,g5.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudek19()o5iswtmyyq y9z*s f 8vk of the electric field at the l 91mzoswi(k q 8*yfks)y9ty5 vocation of the test charge?

  A 5.0-C charge is 10o33ipvssnw m*g 7uc8kq.;j2 l m from a small test charge. What is the direction of the eu wgp7ksijvn.oc s3 32; mlq*8lectric field?

  A 5.0-C charge is 10 m from a small test chareg+p( ,75 vtvoj slih2ge. What is the magnitude of the force experienced by a 1.0 i5+o2lsvh7v jp e ,tg(nC charge placed at the location of the test charge?

  Two point charges each have a valusi2 m-:+ 7uz7ewikovue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the twoi2umi ku se- 7ov7z+:w charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticw 1rqywsi/k6;/ctab 4k and a -4.0 mC charge is placed at the 50 cm mark. What is the electr;c qwa6y4k siwb t1//ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti14 isi b+s1 qx2lnzj0sck and a -4.0 mC charge is placed at the 50 cm marki+ ln s1siz410bqxjs2. 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 =bij gbcckw*:oi3(/s ; 0 and x = 0.20 m. What is the magnitude of the el;(ccis 3k i:objw/g* bectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa71 j)ewfgcn2 6uwy -upre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric w-y ) u1cf72ng6upjwefield at the center of the square.

  Consider a square which is 1.0 m onr4j h ;had,le9 a side. 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, 0); -3.0 mC at (0, 1). What is the magnitude,l 4hdaejh;r9 of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wxzl)1dcx 9y2lhen it is placed in a uniform electric field. What is the magnitude of this electridz 9x c1)llx2yc field?

  A particle with a charge of 4.0 mC has a mass ofxm(f9av3s e/ sz. da+c9czj g dz*+6aa $5.0 \times 10^{-3} \; kg$. 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 elec:owd*;e ujd(z tric field of 6000 N/C pointing downward. Wh;z: wdd e*oj(uat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chk5 k9s thu,tyrg)g-l4) ho ,y)es/fgiarge of -2.00 nC. The ball is placed inside a uniform electric field, and is su,fg )r ho,tih/ k yygs e4u-5lktg)9)sspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm a7+8 evxnz+.a rm ba1xcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cmab v n1a.x+e a+r78mxz from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.e7 i lwtgh*,xq-7 hlv: What is the electric field 6.0 cm from the center of the sphere?qxt:7 h eg- *wl7,ihlv