State the law of conse myxwuj5pzqty l, 6)x1ze1k. uty9k 93rvation of electric charge.

  Is it possible for two negat zqn,d 8qs7e ,nyboe/2ive charges to attract each other?

  Is it possible for a positive and a negative chargen3,dnno1m;6o/)ab z ny ebix(1 js/vb to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass r)0* f:uy n .: tlpao.ev-rdvm*tg6agwod ac:*to nv)a *rg:6.evaldm uyg t0fp.w -quires a positive charge and the silk

  A proton carries a

  The model of the ato2t(p 9 b.ljlefm shows a

  A neutral atom always hajr9ra 7qgd.t+0gpx*ff4:lv/ m kn 3pcs

  An atom has more electrons than protons. The atom d o;:ns5zok; iq/ urtk-ws74x is

  Materials in which the electrons are bound very tightly to the nuclei are referkda 9 jbt 93numiwr).t45n gl0rnwrag lt.tbj9 i d49mkn305)ued to as

  Materials in which the electrons are bound very loosely to the nuclei and can qohvzr65 q 1 fv9 mnkqvrm6632move about freely within the material are r92rvr3qo1 kqm hn66zv m fv56qeferred to as

  A negatively charged rod is brought near b(5,bdm( n,hl yz 2rzeone end of an uncharged metal bar. The end of the metal bar farthest from(r,5nedzbz h2b ym(,l the charged rod will be charged

  Sphere A carries a net positiv lym+zc14rfxhph a:.+e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly tou hz.hryc4pa+:l+x 1 mfched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ;0bjzv 1:wx maz)di7y rod charge an electroscope positively?

  An originally neutral electug et a(yzt,r xw;96(croscope is briefly touched with a positively charged glass rod. The electros(6(wce,ty r u;tzaxg9 cope

  An originally neutral electroscope is grounded briefly while a positf b f 7p:2vhsf2sn1qx5bp;w+ fively charged glass rod is held near it. Afq s5wfff:7bbpx;v1nfh2+ 2p s ter the glass rod is removed, the electroscope

  A positive object touches a neutralzrpxv 9rw.wt- /6efw+ electroscope, and the leaves separate. Then a negative object is brought near the electrw f.- zrvrw/ptw+e 6x9oscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutraae(x)dbw/ (phl metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path follow(xp(d b hew/)aed 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 the l tvkqrj987 cajs,nk.dg1 w29Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larget2r0zn f1 nz e1,q1nttr in magnitudet,q1fn 1ntt0zrze n1 2 than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eac 3pzs 2ay-5:mr( ljvthh other on an insulated table. Which statement best describes the electrostat5r2 j -yvmh3zp :ltas(ic force between them?

  Two charged objects attract each other with a certain forc;wy: 1lt 1zr-bdtd 7sue. If the charges on both objects are doubled with n;wub :71 1lsrytdt-zdo change in separation, the force between them

  Two charges are sepab 2v 4 lvykm+8a(kqpt)rated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual for4b+ v2qalvk )y(8tp mkces?

  Two charged objects att/moznprk45c ; ract each other with a force F. What happens to the force between them if on/5m zrokpn;4ce 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 ttbj q4rl 6+pl8hr- xt+q.7 zsm*i9bo a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron li*t6l4t-t+qo8 ms.q7 jbbzr hxr9p+?

  An electron and a proton are separgo3l)qk;:bh smemj: 8 ated by a distance of 1.0 m. What happens to the magnitude of the force on the gsh bl83: jm;q)kmoe:first electron if a second electron is placed next to the proton?

  An electron and a proton are seg3 ogz z7z:u3llyh ;i:parated by a distance of 1.0 m. What happens to the size of the force on the proton if the electrol hy:glg 3z:i3 zz7u;on is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the50 su defvzuar+.atu 91p0zq- 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 electrostatvzazeu ru.+s0d fq a 015u-9ptic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at thnz/u- +nwna 60ksr-ngku+as 8e centroid of an equilateral triangle. When a secondz8ss ruanunn -+kaw n06/+kg - 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 placed at one of the other vertices?

  Which of the following is not a vectofb6 6*w,0i )umx6govtifebq;dvwd;9k ) h 3nlr?

  At twice the distance from a point charge, t;:(vo xjo bq ;-etc-nghe strength of the electric field

  Is it possible to have a zero electric field value between a ywc;y6t z7ogxu.e6i+ negative and positive charge ayucx76. gw y+ t;io6ezlong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive nh 8v-ls-b(bx charges along the lineh-bxb vl-(ns8 joining the two charges?

  Electric field lines nea:,qnimc p x,+6 hi(raxr psitive point charges

  The electric field show2u+h nk o,ey8gez 4co0n

  Can electric field lines interr 8vr7 dwq1l.asect in free space?

  A solid block of metal in electrostaticn *;kd3fxbt ( kqvoq:/ equilibrium is placed in a uniform electric field. Give a stkkdq(qx; 3 nvob tf/:*atement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow meke 4 35wwm3pxcr4n,-. he ituqtal sphere of equal diameters are each given the same charge, the electren3.4-3 qe 4twpci 5m,xh urwkic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whergs 6l0u;p2i xx /ik0:.ysaqote a uniform electri 6iy0 xlupikgts;axs q .20/o:c field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrdw3 1u .00(nhns3euw 6kqmqcvic charge

  A positive point cha qc ;g4boz2xp-n5o+f is87lcmrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fiel4qc+c78zlp-n2 f bim;ox gso5 d at a point directly above the hollow sphere has

State three properties of conductors i0w 5-v5 yzxvr8 zvranet 7y2d3n static equilibrium.

State Gauss's law.

  The charge carried by one elewht(woyn3 : /;ir3km eh0 uif5ctron 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 protsnnz / d)8um*4m z( onu q wb1v.seshpb84q5q)ons than electrons does this piece of plastic qs nhp4*8z) b5w)n(ez.mmus oqs8u 1/n dqbv 4have?

  What is the charge onx.ajt *iytn-)s6nx) b 1 kg of protons?

  An atomic nucleus has a charge ofb dr*om6p (q5n $+40e$. 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 2.0bc+trq6u4 z8va ( f7gf and -4.0 mC, respectively.b7qf8(az tv+4fc gr6 u What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m .4enf + nqb qa (pqr1iy8s*0uvfrom a second charge, and the force between them is 1.0 N. What is the mag+pq0a 81s. uq byri vn*4(qfnenitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyjfv (27*jwxzu?

  The force between a w 7n x0xx3kdqm lxw7x1n,ughcw67 0y )$30 \; mC$ 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 force. If the/ 0w ssrby -+g2nap5woy are moved to a new separation of 8.0 cm, what is the elec wsw+-n 0/oybs2g5rpa tric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The y2cu09 r;a idgfirst charge is at the origin, the se;rgaid 92u 0yccond 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 ar -8-egrxy5h q pz(tb+ye placed on the x-axis. A charge of +2.0 mC is placed at the origin, -28p- grtxyh b5-ze(qy+ .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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at : ;0w;wgt dvvqx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of thw ; vdtw;v:gq0e force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and 0 0/ul. 6to1o)xfnvblp/vfh32tut jva 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 /3 fut0 6o2v t1ltlovvxhn /fjpu).0b 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC isbiom4(rpi8xelk. vr(y) 6.ri at (0, 0). What is the magnitude of the net force on the 5.0 v lrr)mk (.6r4iey xb o8i.ip(nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); :)s *ia2qoisjQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of :s s q)2iaoij*the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ey9nhs ) tyh)y:quilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges)y yn)tsyh9 :h?

  Consider point charges of +Q and +4Q, which are separated 8i, b-nik q6rgby 3.0 m. At what point, on a line between the two charges, would it be possik8 i-,igbq6r nble 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 +9.0py/o-tjk 1kicy -vcd sr7*8i.-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force o-. 8/y*k7oycsdr -ii jpt1k cvn it is zero?

  Charge +2q is placed at the origin and cha, 3a6wfs5l4 mw9tr aetrge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero,r3 a6lwf5sm t4we9at ?

  A copper penny has a mass of 3.0 g. A total enut4la(- xwhw fi:lt +tat (ozy9/*/ 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 gravity byl +c 5 ne0*8 zs9dvasnwvq(r+q the attraction of a fixed proton some distance above it. How far adn(q8qvrscav5 n *+9+ez0 lwsbove the electron is the proton?

  Two 0.20-g metal spheres are hung from a commie8ygq) 4r 4rron point by nonconducting threads which are 30 cm l8)q4r yregi4r ong. 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 charge of +40e. What is the magnitude of the electri4g p8amdjnm;6w lpbkv,8 bzx0(v2 (wic field at a distance bj(zlmwd 8vpkgv24w ,6;nib8x(a0mp of 1.0 m from the nucleus?

  What are the magnitude and direction ofrf em,4r1lmz 7 the electric field at a distance of 1.50 m from a 50.0-nCmlrrzmf41,e 7 charge?

  A 5.0-C charge is 10 m from a small test charge. Wha(; jc;dww 0;h swv:t s4qcalx3t is the magnitude of the electric field at the location of t;;4ath;:qd 0jc(l3cx swwsvw he test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directhvkt 7. )ds,dawh-hs+ ion of the electric fi.-+kw7vah sshddth, ) eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit6pr+hf i,g6 pxude of the force experpxp,6 i6g+hfrienced 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 dista , hn9cl3tjy8i0rrrw: nce of 4.0 m. What is the electric field at a point midway between the tt9iw,rlyjn38 c 0hr:rwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charq 5u, )xknsgs v0r*tr)ge is placed at the 50 cm mark. sg )5,vrx*nr0t ) kqusWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mav4r2rahz0x jts(k 1l6o;z if /rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lin / oz kh(1;ftvlzjr4 rx02as6ie 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(pcb .xo,wrvkc ke53 , = 0.20 m. Wha 5kbe vo,xkw.c,(c3 rpt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners .6mc jkl8;bva0jd 6z qof 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 ak zb j.l6vm06qdj8c;of the square.

  Consider a square which is 1.0 mtux+5 gnnrj 3 h+n.mw6 on a side. Charges are placed at the corners of the square as follows: +4.jh+3un. nwg6+ 5xnt mr0 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 center?

  A force of 10 N acts on a charge of 5.0 mC when iu ty.s/b5pm 9:br6m dnt is placed in a uniform electric field. What is the magnitude of this electric9ns5 tm /pbudb.:yrm6 field?

  A particle with a charge +qig 8vy9sk /fof 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 electri:qmxgwx 0thc)mrw1avli v2 j.7iaev: (f9:(ic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspenlv::w .vf mi:w7 x im1rihe)9caq 02(a(xtgvjded?

  A foam ball of mass 0.150 g carries a charge of -2.00 c axzgp1 zlem n32vod 6g2 m;.,3l0jexnC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are 31z ;enecx2j3 la6,p 2 .mxv l0dmozggthe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn5 quk5sdznu9dr 9 -v0nitude of the- vk q u9srd0z9ud55nn 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. What i tx-mzaolra3n 5kt(.3 u)j,x zs the electric field 6.0 cm from the center of the spherex t3 5)anu-k la.,3r(txmzjzo?