State the law of conservation of eln7m n3xt2(df 07igl c5j g/umsectric charge.

  Is it possible for two negat.cahvt 8m9 h yt1p4fy,ive charges to attract each other?

  Is it possible for a positive and a negative charge to attrw yu.vzs p,-dvj *;(lsact each other?

  A glass rod is rubbed with a g8pxv l7g 2-lktx*,bb piece of silk. During the process the glass rod acquires a positive tbxb7, v8-px*k 2glgl charge and the silk

  A proton carries a

  The model of the atomr o5s,/wbr) wb2-yeu e shows a

  A neutral atom always has;ia:zlo jj5+o

  An atom has more electron z x jzw,c slfb(*+-7zvk8e.uxs than protons. The atom is

  Materials in which the electrons are bound very tightly to the5qqs. rnyogy 4 ant1b -7rg , l0qpy50y7urm0h nuclei are referr5rmuap50gobrq hy .7,q qy1l s40-n0yytrg 7ned to as

  Materials in which the electrons are bound very 1(mc (alm3ut6ani8 uf9jv ou483q vxhloosely to the nuclei and can move about freelymavnx1l689u(cjam3 4u8 t(vuhoiqf 3 within the material are referred to as

  A negatively charged rod is brought near one end of an unchay -w *cpc7t03cn b.yoxrged metal bar. The end of the metal bar farthest from thxcpt o-y0 y7 c3b*wnc.e charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is q0,35dncr3w .urdsopw;cc s8neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement isun3sdo3c spq c5 c;,rd 8ww.0r correct?

  How can a negatively kya757zw7z m uk 1gwhq)f::jicharged rod charge an electroscope positively?

  An originally neutral electroscope is brdzhqk fw7d 69f2z; kw5iefly touched with a positively charged glaw 7hzfkz q dk5wd62f9;ss rod. The electroscope

  An originally neutral electroscope izd7v-u(xu -mds grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscoped-muxv z(-d u7

  A positive object touches a neutral electroscope, and the leaves seq uc0do7 v;kk/cm7)tiy4t w+h parate. Thend7 q7+h)mc4tt wo/ y0kcuvi;k a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 8a 9h tgss+3u-qecz6 ttable. 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 fi+ 3tg-6 tzseq9s8uha crst 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 constant eghdn 4ccy49vqkh5dd:1 g3 ptb7 1:fv$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargim+c.gm9ysi 0: 7ydo ke is larger in magnitude than the second90 g km:os+y d.cmiy7i charge.

  Sphere A carries a net charge and sphere B is neua )d4ldoqhuahznc-0;op9.,u8i7b5tnkj o+ ntral. They are placed near each otherou dj9 n4it ha c-hn ;pk+a0n).bouzq7lo 8d,5 on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wdg+)5iw -kj -cgzu2 /jdl t4ooith a certain force. If the charges on both oj w/2lu)54k tocz-ggdi -j+dobjects are doubled with no change in separation, the force between them

  Two charges are separated as7 b0s sden68q:i kk-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, w0s-q ke7s:8n kbi6da shat are the new mutual forces?

  Two charged objects attract each other wih-9 xvpw00iarj1s, ,0xw dywct;s4zjth a force F. What happens to the force between them if one chargex c4pw, ;hwawi -vj0 j19ysxtsd r0z,0 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. What happens lh+ns5c )0oytfudqh;xajb j ( q5t 97/to the magnitude of the force on the proton if a second electron is placed next to ;a0ylodnj)/5 +tub h htcxqs 5j9fq(7the first electron?

  An electron and a proton are separatei*luj8gt 5 m h3.acc+cd by a distance of 1.0 m. What happens to the magnitude of the force ont 8a5m3.i g cc+lcju*h the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1ubkvv 9h0y n*+mb ka82.0 m. What happens to the size of the force on the protokhu8 2va+bkyv*9m0bn n if the 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 secogh *drdht, +zh01 qw5jnd 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 oghdq51h,+ h*ztwd0jr f -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 plswv0-j6k c 4ri/cvb) zaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an v6vc r0ik z/b4s w-jc)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 isrrk jc n9c.u+( not a vector?

  At twice the distance from a point charge, the strength of t6dy.+toxsx 6 ghe electric field

  Is it possible to have a zero electric fiezak,7ms q nrmxeb 8h-3 )5(kwmld value between a negative and positive charge along the l m,k3)nmh r7wsk xzm(8a5-qeb ine joining the two charges?

  Is it possible to have a zero electric field value between twvqw vulb5y3 moj0/, t)o positive charges along the line joining the5ymq3)o/ v,tulwbv0j two charges?

  Electric field lines near psitiv(0ogn 4r) lny3mz :bwizsn1)r e point charges

  The electric field shh3) /mkx+kabv/x x;+;jl zfd kown

  Can electric field lines intersect in frerj 6utxb wh ,bpox,810ci/.ta e space?

  A solid block of metal inyim9 b51s2s.b6 y/f -u1ela 3pug0u 5we gmvcv electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning t 2s cu uf1gw 9y.bp3-u6vvilygsmee/bm5510ahe electric field in the block's interior.

  If a solid metal sphere and8cr; -zp16awuggp dc+ a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center awup1d - c;g8grc6 ap+znd the surface is

  A cubic block of aluminum rests on a wooden tau4o4;jjnkktaw5r; * pble in a region where a uniform electric field is directed straightj4pk now kjau*;4t5; r upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric t ncpn5lm6);4f awu70z/ ywse charge

  A positive point charge is encltze 3x6ksym95osed in a hollow metallic sphere that is grounded. 65ezy39xmkst As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiesak*-bmu4 b 79epz1iml of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ergjku( f/2 7,zt8nnpelectron 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 protoz;wjr f yj84*r hq9+wyns than electron+*f9q 8jh y;yjw4 zrwrs does this piece of plastic have?

  What is the charge oaw jjn v+p a::17uu-exn 1 kg of protons?

  An atomic nucleus has : b ol+bxcpd8 il:. c)qp7r9rma charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatpz.i g et fa pp:5t+(n--+mbfn)jl w3ted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is5+a (fb:tp-it f.jwepngz l tn3-m)p+ the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 7:)mz 29hy2qizbrn wuc,tn ,tN. What is the magnitude of thr bzm, 9 t2qy2i:nwu7,hc)ztn e second charge?

  Two 1.0-C charges have a force betwe mez ;:b-7yoa-mo3us ben them of 1.0 N. How far apart are they?

  The force between a )vv*jz x mnlc ;(3stk:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparzw /u jn/,7qjot, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forceu/ j7qz,now/j between them?

  Three identical point charges okh,z0*nff*e2nuff t3)l k 7 bqf 2.0 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 electrostatic force whq*t7nfze3)kb 0,n uf*2hfkf lich acts on the charge at the origin?

  Three point charges are placed on the x-z2*t zgvrwb+. axis. A charge of +2.0 mC is placed 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 and direction of the electrostatic force which acts on the chargeg*+.wr t2 zvzb at the origin?

  Three point charges are located at the foll2u k(jf-skt,cowing 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. What is the c2(ustkj k-f ,magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and ai5)wdu/t8 elhe3n 7vgnqg0;r 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 magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner? d5hw qug /73l)ngn e8ie;tr0v

  Q1 = 6.0 nC is at (0.30 m,g 4 sfo-:u oqsqv846rt 0); Q2 = -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 tf o4tsg8:vrq6us4oq -he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0. -c8b mp0t5hful,zqggnbw ,.); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0mfu0 5g hg8q,,zp-ct wl.b n.b nC charge?

  Three identical charges of 3.0 mC are placed at the / ez ts v.:t mfalfej6:f;(a5qvertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude oa tf;m6z5alf.(t qe:f/v j: sef the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q an4 ww*wim,lawol4m0m5j8zg jmbkkz) u.3 .fn7 d +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be puj3g4afoj m5 * nlm mwmwkl.0,bk8.iz7z )4wwossible 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 an v1c 8vv,leb+rd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed sobr 8lvvce,+1 v the net force on it is zero?

  Charge +2q is placed at the origin and charge -qv9.l 0bep1uh.pfc r d,lpw9*u is placed at x = 2a. Where can a third positive charge +q be plbc1lh9d0ur .e.pv9,wu fp *lpaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofb*arm7ku i ypl(s2k bsf86q/ 0 $4.0 \times 10^{12} \; electrons$ 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 gravitl9-ui ,uxv7 0ti3d fyvy by the attraction of a fixed proton some distanitvuxy 0-l379fdviu , ce above it. How far above the electron is the proton?

  Two 0.20-g metal spheresk 4e*ox 1l2xzz are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart un1xoxk z2l4 ez*til 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 magnitudeddpom5 )yx m0. of the electric field at a distance of 1.0 m from t) d.0 mdoxpy5mhe nucleus?

  What are the magnitude and direction of the 1/t8 cjh s.7+bvv vnbtelectric field at a distance of 1.50jv 8 t .1vcnbhs+/btv7 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.7x (6k: cwruyju.(vqi What is the magnitude of the electric field at the location of t(6qx v 7cwiyk.ur(u:jhe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirigenqhp, m -v 6/v2m(quf 2dt(ection of the electric vi /2hf6pe2,mum( t ngdq q(-vfield?

  A 5.0-C charge is 10 m from a small test c,l i hz; z6lm ,tur0;3fdh8zxoharge. What is the magnitude of the force experienced by a 1.0 nC ,3dt h uxz mrlfio0;l6hz;, z8charge placed at the location of the test charge?

  Two point charges ea0o0s y3c;l ,rsjms;djwik8:gch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the e8d,jjsmki rg:swc 0o l0s3 ;;ylectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and:t: tguwq .:jp a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thu j.wq:: pttg:e 30 cm mark?

  A 5.0-mC charge is placed at the 0 uw++y s:4sjp arf2 9aucm mark of a meter stick and a -4.0 mC charge is placed at the 5+uaafpj24s u:9+r s wy0 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 =.fgr-zf 2 1jyu 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between theuyfgf- 2 .r1zjm?

  Three 3.0 mC charges are at the three corners ofpq/vi r5 1 gh4bfy,rm/ a square of side 0.50 m. The last corner is occuiq1r/g / ,fhvp54bymrpied 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. Charg5uuljy t l91b oau/s)2q1zn+ bes 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 u 5 9 /jt1uu2sob)+q1ylbzlnaof the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed i, lf(rtji j1pyp)*;d6r enrd ;n a uniform electric field. Wha n;j*pj ; il(td)pfe1dr6r y,rt is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mm oa-;mk b(0ezass 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 placedwg o x8.wy8szks+ k/t( in an electric field of 6000 N/C pointing downward. What charge msx. (ok8g t/yw+sk8zw ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g;27ugg t 1 9wcqmvc,ur carries a charge of -2.00 nC. The ball is placed inside a uniform electrw ;9ugcmt,u2gcv1 q7ric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 /ln2na 6eko:fmC. What is the magnitude of the electric field 5.0 cm from the sphere'se/: nkf6ln a2o surface?

  A metal sphere of radius 2.0 cm carries a charge of yx + j)1nty2rf3.0 mC. What is the electric field 6.0 cm from the center of j +2rf)xyn1 ytthe sphere?