State the law of conservation of ep1g. /aq;n*pn( jczvbnar3bfd7h q87lectric charge.

  Is it possible for two negative 5ad:e+tqh8nbq ( +egs charges to attract each other?

  Is it possible for a positive and a negative charge to at8 m0t-o2 *kcsd zva,nutract each other?

  A glass rod is rubbed with a piece of silk. During thst2g bcuxy em7jo -rc:d: g+v2jzk1 pkk;8,/le process the glass rod acquires a p-j ku21;vypc7,b8:k x:j2+sm to rledgczk g/ositive charge and the silk

  A proton carries a

  The model of the atom shows aboeuh1 go k8a 66t)7wx

  A neutral atom always ha6ik:l*m5u z jqs

  An atom has more electrons than protons. The atom is-ale9m1sn7mha w at/rhrq:7byd.y );

  Materials in which the electrons are bound very tightly to the nuclei are refe(2fexgd ed0kc (ip*xm8 3ol t6rr gf 32eoc(ddeixpkm l608*t(xed to as

  Materials in which the electrons are boundaq e::fz;* z ,gysjba;k+p/g g very loosely to the nuclei and can move about freely within the material are referre ,gake:zp sqjb;a*/ gg+z;y:f d to as

  A negatively charged rod is brought near one end of an uncharged methokr3o/, izj*c6m0ik h3r6 vr al bar. The end of the metal bar farthest from3j 6ro3ozvh6r irki*m0/kh, c the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutralb .;w(0zkg (j7s x+eajdldal*. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr.*xalbe k(+a;zl(d7djsjw 0 gect?

  How can a negatively charged rod charge an electroscope pu8kyll/ uy( 5kositively?

  An originally neutral electroscope is briefly touched with a posit 1p vi(e8*(zc jd *yufm)hugg3.fqgr1ively charged glass rmy g(.h1gq8 )ugz 3fvf(*p*u rj1dcieod. The electroscope

  An originally neutral electro5 nnv xlwes -f09mc 16uk5kr,vscope is grounded briefly while a positively charged glass rod is held near it. Axv 5efkk ms61ru5 l,0w-vcnn9fter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t 1x)fcba;ffozi69n95whm)r x he leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens t5)9f bfm6aic n 9;fxxwzho)1 ro the leaves?

  A large negatively charged object is plac/86:c ce jip0 n csyv(r53muuoed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic bal cye8su6nojc3(/ i5 0:vpucrml 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 constan jcxv4iisylu2pca*pt 0 c,04,t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ybkrd hm1j ;/1charge is larger in magnitude than the skby1m; dr/h 1jecond charge.

  Sphere A carries a ne fmg krdu4yx sahj );+39.7vbzt charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electroszx34+ ) u;a9gb7m khrj syf.vdtatic force between them?

  Two charged objects attract each other with a certain force. If the chargest3s9(psyun: r on both objects are doubled with no change in separation, the force between th(:3n pru ts9syem

  Two charges are separated by a distance d and exert mutual attractive oq wujvk aj5;, 9 5;vl7yqu:dcforces of F on each other. jj9q u 7,yw;c: k5od ;lq5vvua If the charges 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 to the forcv;n8ieb k ub,*e between them if one charge isbin; vub*k,e8 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. Wa, thazu: o2-nhat happens to the magonazh :a2-u t,nitude 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 distance of 1.0 m. Wh8p.zt.f,mh)/ozdb ug0 + tnonat happens to the magnitude of the force on the first electron if a second electron is pnh unb )8.d,f0mzgzp/t.to + olaced next to the proton?

  An electron and a proton ars . bpfcdu gs 3037akqaj*;nw,e separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer tc.wgfn* 7up3 aq03; k,jdasbso the proton?

  A point charge of +Q is placed at the center of a square. When a s+u:s5uep 4qhqtnv .7f econd point charge of -Q is placed at one of the square's corners, it is observed that an electrostunt:5v4e+ qs fhu pq.7atic 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 centroid of an equila.ujv/ 4rm8;od t*aevl teral 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 oremu a8l4d/t;jv o*v.f +Q placed at one of the other vertices?

  Which of the following is q7hoq o1/zuk2u99 lqqn1a 6 6e6uonwf not a vector?

  At twice the distance from a point charge, the strh-1opd5dbbe ;zz0 5opength of the electric field

  Is it possible to have a zero electric field value betwe ysv4zu+6wvuy nk5y;wl )7isxp/ u2u/en a negative and positive charge along the line joining the two;4uuy l2w6 vzy+ip7xwk ssu/v)yn/5u charges?

  Is it possible to have a z76h9 hn k;hurbero electric field value between two positive charges along the line joininh;uk79h6b hnrg the two charges?

  Electric field lines near psitjg) pldhl*1o)ive point charges

  The electric field shq9w t-jlq. l-gown

  Can electric field lines intersecc8xe i5,(bu1(drdg-85uee;jj cnnu m t in free space?

  A solid block of metal in electro4w.2a8smmtc t x4p2bz e+ 7huustatic equilibrium is placed in a uniform electric field. Give a state4+u2s pcxwm 27mz.e 8bh autt4ment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow met5kd,x2hm8 mzn)nv h2sal sphere of equal diameters are each given t5mnnk vxz)h m2,28ds hhe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests onr5ph-c(o r4mj co. )* 0illfrp a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the . jil -)rrl5ro0 mfop(*pchc4block's top surface?

  If a conductor is in electrostatic equili5 c(xl/+qhque0 upq:z7f 2mpj*-3 os xuekg+ vbrium near an electric charge

  A positive point charge is enclosed in a hollow metallic*j ajo3 ,qi/yx(9kyn4wq.gsx sphere that is grounded. w(jy,x/x j 3ay.i9qqng*o s4k As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductor 1i1dnla0fkywbi l8(*n: m( uns in static equilibrium.

State Gauss's law.

  The charge carried by one elepv* 4rcnaozp5n03o:t)boek57-beo ectron 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 a8er wst 26h ) +6av/)gmh mlxv6qyz:re net charge of +2.00 mC. How many more protons than electrons does this piece of plastic h g ehw v6evzr/))xqysmah682l:6+tmr ave?

  What is the charge on 1)4caqz -z9 pfk(a.it e kg of protons?

  An atomic nucleus has a char.cj;e; qcd ..;z;fah,j nlfhbge 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 vd5ejivlv6 9 :,5 m+7zhot3zvp)x p awpalues of 2.0 and -4.0 mC, redax6v5e +pl3z tp7)5z:hmv,jpo ivw9 spectively. What is 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 tp,,4c7efbb/ q z8yu-ccion-N. What is the magnitude of the second cha-tne7/4up -o8b, yiccz bq,cfrge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the m.exxk2 uev+l .f,o.fy?

  The force between a h ex21jgoie*u25bq6 tt0b (x e$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cd+anx 9nqk9 l0t: w+dum apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electru+ xd9qd+k9l:wnt0a n ic force between them?

  Three identical point charges of 2.0 mC are placed on the x0vrm72 vso5i6kq9jx c-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is 9x v6kicmov 2 qj570srat 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 xe2 :p8 bub0zac-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 mC8uab bz2c0ep : 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 yftn ;sze anrvs:o+m.8.cf;*ls ,+j jat the following 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 magnitude of the force on the 3.00-mC charge.n .;as rm;lce :,++8fzosj*ytfvj sn?

  A point charge of +Q is placed at the center of a square, and a second point co nd shk,w u)b4x/g23jharge of -Q is placed at the upper-left corner. It is observed that an electrostatic force og,u2w4sb d /j o)kxnh3f 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. 5 ksf *a b1p6h2c*akcyf.,ksm 3ngji*30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is ip6yg*3.bhkkmkc*1 *f5aa sfjn c ,2sthe magnitude 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, 0.10 m); Q3 = 5.0 nC is ai30 6wjy1ol9jdkoh95ysuo3v t (0, 0). What is the direction of the neto j ivjl39 w0y1uk oy6h9s3do5 force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at t+ wzp.f5vw9lfq z1 g9mhe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electr 19w9pwfmz lf vz.qg5+ostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatx4 mn+z::z9 b*ppr iq -rl8zgj point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrqnz+x9z4p gri:8- rm*jb zl:postatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a ts ; in3e.o:jp77ulyn+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forpo.; tun37ny el:i sj7ce on it is zero?

  Charge +2q is placed at the )hh/o651ghluka/z/ jfj m7jt7qwya *origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the f/h/w/mu6hgo y7t* lkajzj51a)hj fq 7orce on it is zero?

  A copper penny has a mass of 3.0 g. h(z j- 8j1a3jpp; /kyir*xh lq 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 agaivkj 8:9of ;erpnst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electrrv8f9 ;:kpj oeon is the proton?

  Two 0.20-g metal spheres are hung from tp 5jw3fvc1k) a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the t)jcp1 kfv 3w5electrostatic 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 charg/xyit zh2(wkosqy,3-n9v 3cg e of +40e. What is the magnitude of the electric field at a distance of 1.0 m from th2, y(i-9svtz okwhy3cnxg3 /qe nucleus?

  What are the magnitude and direction of*c fm,5vd*1tt.mqvy i the electric field at a distance of 1.50 m fro ,y*m5 .mid*vtvft 1cqm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni k ylkssu,v0i*qgk,o 2 +)sji5tude of the electric field at the location os)kuk,v,qgi0+s5y l*jk2i os f the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire nm,k;z xgx rgid9*d1,ction of the electric f,9dzrx din1k gm ,x;g*ield?

  A 5.0-C charge is 10 m from a small test charge. What is to99h-8 ldgsv vzv7nz(he magnitude of the force experienced by a 1.0 nC charge placed av( 7gv8d-sl9nzoh9vz t the location of the test charge?

  Two point charges each have a vv37z5ge 7g-j uwda, 2euxc2yx alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a g3j-ee2avy x, w cugdz25u77xpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andb o c e67xi;cb74w4at2w+ioe97pe rnl a -4.0 mC charge is placed at the 50 cm mark. What is the electric field acib 64er;7b xl72ip7wac we4net +oo9t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and9v.hchnr s25 4:iangi a -4.0 mC charge is placed at the 50 cm mark. At wh2iha.r :9 h4 vsnni5gcat 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 = 0 and x = 0v3ivn7s/ns+8np . wta.20 m. What is the magnitude of the electric field at the8t .w3vsin n /np7a+sv point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50+2vug 3gb,kv myzsf74 m. The last corner is occupied by a -3.0 mfkvg m43+g7sv,by z2uC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Che uc4n5wi797.e4so ,xbw bhldarges are placed at the corners of the square as follows: +4.0 mC 9 4i.ue,odbwx4l7e7nbchw s 5 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 ituif 1gk4+u+1l+vc jaz is placed in a uniform electric field. What is the magnitude ofuk ifz+ug a1j+v+c41l this electric field?

  A particle with a charge of 4.0 mC has a m2,p6brrnt 4b pslx+d, l ;6 eppj5pt:fass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of l,,o-zw ufs/ jdb06psx u3qt7mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be uu6/pl,w0 z3b,f s doqtxjs-7 suspended?

  A foam ball of mass 0.150 g carikf;)as;.ery(dk8u h ries a charge of -2.00 nC. The ball is placed inside a uniform .8 u;h(;d sfiakk yr)eelectric 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 6 wpnc yc.**zvcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from z*.yc*6n vwpcthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha(p n(yf6so:7v6 kd qttt is the electric od6fstv qk(:pt7yn(6 field 6.0 cm from the center of the sphere?