State the law of conservation of electric.wgn s3 i8q/s -9 sbjmx9qm/k60qhrle charge.

  Is it possible for two negative charges to attract eaaiy m7t z30b. tkwh3f c/4d,pdch other?

  Is it possible for a positive and a negative charge to at o 9s ,8suv(qi8hhqbk:tract each other?

  A glass rod is rubbed with a piece of silk. During the process*)a2jn2ck romb 6:qo 7nl7ncc the glass rod acquires a positive charge and thkoa:c o6)*njmnblq nc7r227 c e silk

  A proton carries a

  The model of the ato.gj hjo+) nd2tz-ygw5m shows a

  A neutral atom alwaywk w7 p)3t0n/nn(qajbs has

  An atom has more electrons than proto)us gyg*o0m o(ns. The atom is

  Materials in which the electrons are bound very tightl *o4,s 9x-7 lk(a*b 8hoshb uz3ghwnyzy to the nuclei are referred to8bz 9s-*b k7zsn*a lhuhg,x(owoh4y3 as

  Materials in which the electrons are bound very loosely to the nucleke 21; /jdjplji and can move about freely pkjd le;j2 /j1within the material are referred to as

  A negatively charged rod is brought near one e( yo; dd04ycy5nqh*p(h8xy i mnd of an uncharged metal bar. The end of the metal bar fartheyhch y(yi*y08 o mdn4qxd(p5 ;st from the charged rod will be charged

  Sphere A carries a net positivhj 3q0.,2 ty8 ferhc(pyjhey3e charge, and sphere B is neutral. They are placed near each other on an insulated table03 8jyfhjh c(3q2,. ehtyy rpe. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargd vqsgiue.9 :7ed rod charge an electroscope positively?

  An originally neutral electroscope is i6/s *td hjujkv+ysnd ,7n1jzj 0 12okbriefly touched with a positively charged glasjj6z jnytkk sd*iv11 2 /ds,uh0+n7jos rod. The electroscope

  An originally neutral electroscope is groundezzk(/z v upp2 /:a,kvkd briefly while a positively charged glass rod is held near it. After the glass rod is removed, thez2v( ,azp/uz kp/:vkk electroscope

  A positive object touches a neutral electroscope, and the leaves syqs: 1cb t)i0/kysw8y c h72mgeparate. Then a negative object is brought near the electros qk8 :)myi ys/2ct0sgcb1 7wyhcope, but does not touch it. What happens to the leaves?

  A large negatively charged obje/-rvk6 gh+jee h4z6ku ct is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic 6/gzh- eehrk46jkv u+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 the final charge on each ball?

  Charge is

  What are the units of the Coulomb const6mufl em-.m3 i5 7ksbvant $k$, which appears in Coulomb's law?

  Two charged objects arej 1f(u 46 mbox1)i8uk9spgcf ca;gc.y vw*zc , separated by a distance d. The first charge is larger in magnitup( 1; v9c*wjy8b1km ugoug fcc)fs4cai. z,6 xde than the second charge.

  Sphere A carries a net chargjbw) 8hlrj-wb 3dyg1he ..kt9e and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forh .)19tdrwbghbk wel3 8j-y j.ce between them?

  Two charged objects attract each other with aqz,vrkr:z6ml u(;dh e0+yv5u certain force. If the charges on both objects are doubled with no change in separation, the force betweenmr6ukv( rlzz+hu;:v 0y q ,ed5 them

  Two charges are separated by a distance d and exert mutual attnr9*rj mdnt p v5:9xf7ractive forces of F on each other. If the charges are separated by a distr*n5vxt9:7rfn d mp9jance of d/3, what are the new mutual forces?

  Two charged objects attrapb1 q9trcpm(y ck x 292i/5avz-d/n hyct each other with a force F. What happens to the force be2 q ppdxyib5 ym/v21n-crtc/9(zka h 9tween 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. Whish:q)edd/k9gh9 1eo at happens to 9 hdids)h:9/g keeqo1the magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a prsy)iq ;k+wc. cljlmjrk)91 0boton are separated by a distance of 1.0 m. What happens to the magnitude of the force9bk+.rm01);l wjsl cicy )jqk on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated *n0kpinvuf7 -b rh l+,iup 9b;by a distance of 1.0 m. What happens to the size of the force on the proton if theibh,-n pu ;+fnkbpriu*l0v 97 electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point2cnaaf 022 vfgp: ,xcz 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 n2 aa0zf:f cp,v2c2gxsquare. 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 centroid of an equilateral triangle.p,2x rty0 b-vs When a second charg-,0rbpxvy2s t e 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 vbp2 a67 tv;hlv2xh 0jlll0(bvector?

  At twice the distance from a point charge, the/h39f *z9vi :fdfzhbh strength of the electric field

  Is it possible to have a zero electric field valzsona f-/ uywkg0f-(0ue between a negative and positive charge along th00/ unsfza o(w--ygkfe line joining the two charges?

  Is it possible to have a zero electri4oi(aadzq2q 4c field value between two positive charges aaaz4 4i(q d2oqlong the line joining the two charges?

  Electric field lines near:5e:hjl-hl xd4 np ey8a4n9 fj psitive point charges

  The electric field sho7sv 4uxn;7yhb8krid( wn

  Can electric field lines inhxx*s;v p,. efcovw69a3r */io9 rmwftersect in free space?

  A solid block of metal in electrostatic equilibrium jk1ow( w8rp,vqiabb 6 4a2z0qis placed in a uniform electric field. Give a statement concerning the electric field in the block's ibk waw0ja(zi2qv8qop 46, b1 rnterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arvuoe* zf:e (,ue each given the same charge, the electric field (E) mizo, :fv*(uueedway between the center and the surface is

  A cubic block of aluminum rests on a dvbi,p.g.c74s33hc4rt ;q o rnfve. gcbn -g6wooden table in a region where a uniform electric field is directed straight upward. o4pg bc h ni tne6g3cc-,.3vgq.fsvrb7d .r4; What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosta x,dhnz,f 5*gptic equilibrium near an electric charge

  A positive point charge is 1 dfgu0u+4 bcaenclosed in a hollow metallic sphere that is grounded. As comparedf0cadg+u bu1 4 to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.mj 7gcz-8 mam5i;zc 2f

State Gauss's law.

  The charge carried byfpp8fxb1lllf )2k 8u: one electron 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 manybh vrf.s( c zla-3m5d8 more protons than electrond rl-8 fs( zcah.35vbms does this piece of plastic have?

  What is the charge on 1 kg oft (bnl dg6ww ns 4mxx.3go4qc-rm6 ;4v protons?

  An atomic nucleus has a chupeg 9,.c+gd parge 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 values of 2.0 and -44fw o3k ko(;fvezcu.geo /6d (.0 mC, ref/ec u;6d4fgwzeokvk( 3 (oo.spectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a glat3e0 32*yn tfwt,zsecond charge, and the force between them is 1.0 N. What is the magnia3 wt0t 2fel,t*gyzn3tude of the second charge?

  Two 1.0-C charges have a forc3mezc6o26i g2yej wr3dw;4 uw e between them of 1.0 N. How far apart are they?

  The force between a oejsgp q 2o*0*m wj+o*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c km45mbbi0ozp-ni0 m *m apart, experience a 1.0-N force. If they are moved to a new sepa 0b05mn-pi*mikzob4 m ration of 8.0 cm, what is the electric force between them?

  Three identical point chargehd5nih ji2s; 9s of 2.0 mC are placed on the x-axis. The first charge is at the oih;isd 5j29hnrigin, 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 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 placed aknfhfi 88o +l.*j k)nlt the origin, -2.0 m C n)lfkh.oj+n 88i k lf*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 positimexxa0zq x:2, ons: 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. What is,m za:x 0e2qxx the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squarh(;;kuzvas e6:l n,g 3 ir*rqre, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.: lahgn;*ezvrr;(3iq,6ks r u0 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 = -1.0 nC is ah99/yk,7 he +no ffcunt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force c y+/ hh9ofnu9n ekf7,on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 kh 0x (yhi1*mtnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of *hk hx tm01(iythe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert hibj+p/(g1 e4fu. cggices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrost egb p+4g .hjc(/uig1fatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wp gi,cqz6,-ku v .k:;5gw 4hur,ibxgwhich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to plac;.p:5c6zu qwiw k,ggh,urgv i4b x,k-e 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)j 6o *:iw5 +hb1zzg wtmno/xb +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net for+oi*x wm)t hojn6b1bg /5zz :wce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. xja c:el :3d(v/( d+br nm ul90xygas6Where can a thi :e d (y:c+as3 gxuab9mr( jn0vdllx/6rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3 dm-hs py-b :d,o tbfk(aw:)4x45rcze.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 gravity by un()yqgl q54t the attraction of a fixed proton so)(5l qytun4q gme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threb*ghwvsq+f* 7z a;l.kads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces tgsz;* +khl qw*7ab.fvhem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a gkuf7q5c vi.2d .v (vkcharge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?.q(dck7 5 2vugvf. kvi

  What are the magnitude and direction of the electric field at a dista;hl82g r 1 q xe(knkin4i3dc+ qot9/ccnce of 1.50 m from gcdn /k 83;9xic +rk(cq42h tl1noeiqa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chff+p )q.t(c4 yjsv1+owcc5mvarge. What is the magnitude of the electric field cp +45cswf.t) vvmyf1jq( o+cat the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargpafhbbrn cmvi4 r+3 yga1 5 :v:+.tm;ce. What is the direction of the electric c r +m;rv ytv5n :p3cm:4bai. ah1g+fbfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t bzl 4febbuee++.mltyg u 86 fa+n156mhe force experienced by a 1.0 nC charge placed at the location of the test cb6.nm zlfutu4+ame81+ e f bybg+5 6leharge?

  Two point charges each have a value of 3.0 C and are separated by a distanceh7 cnbm)vq81lfeif(p 4 3x gg( of 4.0 m. What is the electric field at a point midway between the two ch(8e) g (bflnhxp7fq3mg4 1vicarges?

  A 5.0-mC charge is placed at the 0 cm mawxlb)ly4oy0 4s1gpg8) b ;jz qrk of a meter stick and a -4.0 mC charge is placed at the 50 cm marggz4jyllxo ybq 0;)4 bw1)p8s k. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a fjqa6-6-wut xmeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line- qftu6x- wja6 joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and5sef ,mtf)q4amgk , 2g -7.0 mC are placed at x = 0 and x = 0.20 m. What is ttkems)a g 2 q,,4gfm5fhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atpaxk-/rhuh 4 - the three corners of a square of side 0.50 m. The last corner is occupied by a -/ a-ruk-4phxh 3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which isdwx .,zt)by.k -v+lum 1.0 m on 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,t+.x v,yk m-bdlw zu). 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 aqr y u ,9him,dei-+ i;ll z.rbcg-a/e i1;mi+b charge of 5.0 mC when it is placed in a uniform electric field. What duczh/biie1 ,m;im.i-q r l;i yglba 9r,e+-+ is the magnitude of this electric field?

  A particle with a charge of p:imna:m*3 y.lobe3z 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 electric field of 6000ag5)d aroazxr pv. m8gp 8ku,s;sq.7( N/C pointing downward. What charge must be placed on the baruxarp qds skm7.gv 8(a; 8z5po)g.,all for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed i*rk z2s2bi25aii * nn9it4 u;rjn l3tpnside a uniform electric field, and is suspended against the force of gravity. What are rij* stnn a9 2;pi5itunik2 4rzlb 2*3the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnilt0ueu-.j zcu2/+-p3 swbwbbtude of the electrbew j b2-z. 3 ltcwp0ubuu-+/sic 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 is the e3i c(e g no5uu6(nv1anzx)uan7;rcc8lectric field 6.0 cm from the center of the sphere?c6x ne7a1;)uu3 5nv(a r(oigu nz8ncc