State the law of conservationl dl0d)d(* w nn:fhrl6ssx0:(5yjogf of electric charge.

  Is it possible for two negative charges to attracc6 1gm1p-ync ct each other?

  Is it possible for a positive and a cr ,ol fl0hzf)+ ,/ lrou(ity- tr3ft*negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glapi m,,rv. twl ylc ;o6/m.n9nuss rod acquires a positive chl nmp..l/wn,to v6cr,9 y m;iuarge and the silk

  A proton carries a

  The model of the atom shows sc 6h8 edv8zf/- 2wkrba

  A neutral atom always hasw/j2 ylufm0: e

  An atom has more electrons than protons. T/pecpfls x+g y:kt58*he atom is

  Materials in which the electrons are bound v14zilaet0; 65iiw ;tg-zoa sxery tightly to the nuclei are referred tolteo- st;4g5iw6 ; iza1xiza0 as

  Materials in which the electrontvigxtb+0;ksi kp)+e l5lr/ o*/j3 mus are bound very loosely to the nuclei and can move3g+ 0ix b /;l/)sut m+itk 5volpe*rkj about freely within the material are referred to as

  A negatively charged rod is brought nk3)3scg ygy; q4p)w daear one end of an uncharged metal bar. The end of the metal bar 4wkyg3 yd3)g;q ca)p sfarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are/f baosz0e.)ij6+wvm /-sdzn placed near each other on an insulated table. Sphersa.eiosw/)06n dfvzbz + m/j -e B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rf a*eeh5yu ; iqw1+b+lod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively che / ez.9dyvaqs(0mgw:arged glass rod. The electrosceme say 90zv(g.qw d:/ope

  An originally neutral electroscope is grounded briefly while a positively chargevz r5+,gy1rz cq2i)v jd glass rod is held near it. After the glass rod is removed, the ezvrc ,gi rzj5 q1v+2)ylectroscope

  A positive object touches a nec+b1 k-ch, i*zgf cr8pm1l/yn utral electroscope, and the leaves separate. Then a negative objez1/b, -8 r*y 1i hfclkcnpg+mcct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objya40c )h 7b 5xeh,chiject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral ccheh,jh)xyb0 i5a47metallic 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 Coulombgu9i xil6; qx6.smgel/fo7 6pg(*vmp constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargv :fl.ffzqh +(e is larger in magnitude than th hl v.:fffz+(qe second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed dmmc9q -a ye: p9-3dngnear each other on an insulated table. Which statee--3:m yapmqdng9 c9dment best describes the electrostatic force between them?

  Two charged objects aliv2a .8alx( /4pogydh3)j ww ttract each other with a certain force. If the charges on both objects are doubled with no chhyxa.o/l g3v(w )aplj8 w2id 4ange in separation, the force between them

  Two charges are separated by a distance d and exercb.fmxmzdth:)fd,t+w/t * b kv a:/7bt mutual attractive forces of F on each other. If the charges are sepaz: dmf bt+,fabw :) b*hkt/vtd7.mc/xrated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with osm-8oh*1*rv:/ykh nux: mzna force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation:oouxk szm8n*/:*-mn1 yrhv h 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.o8;yq qo;vdj81 quz1e What happens to the magnitude of the force on the proton if a second electron is placed next to theq;y1 oqzu 8ev1;qj8od first electron?

  An electron and a proton are separated by a distance of 1.0n;3eph.yq d 7p m. What happens to the magnitude of the force on the first electron if a second electron is plac dp;pqh7y. n3eed next to the proton?

  An electron and a proton are separated lof;:8t x dyuv 2w1(htop7w,qoi0 w p)by a distance of 1.0 m. What happens to the size oh p,;w)vix( w1qo opf 0ytdw2l:7u8 tof 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 a square. oy. /914mvd1 2m gyw0lp+ vya6rpkrocWhen a second point chg/mc9ypyr my1a6.o d12p+ w 0ok4lvrvarge 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is p 5;rka4mi( bg uv/;lek*qav7a laced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the;(eurbvkq aa54g/7m*l vi;k a 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 followinj;auyui99q*xuwq fu+f4 8rm 1g is not a vector?

  At twice the distance from a point charge, tun e t um+mwg8d3ri:.53b*x.mv nl0 sihe strength of the electric field

  Is it possible to have h10 8f)n glngp.s/uyza zero electric field value between a negative and positive charge along the line joining the two chaz) np/gsn.lf y1u8hg0rges?

  Is it possible to have a zero electric field value between two positive wph 0r2szel e 2w-xd7g;t 0/xtcharges azx2wle0/he 02wtd-xt7gs rp;long the line joining the two charges?

  Electric field lines near ps 0+ak aaa/(q6yyh nw m63ui-otitive point charges

  The electric field shown ys+ hs)f+at en1)wt+d

  Can electric field litndi n,kym5os;3f;jy2.+j chnes intersect in free space?

  A solid block of metal in electrostatic equ sp5t;q).kz3ty fr, bdilibrium is placed in a uniform electric field. Give a statemerk5s)f3z ;,pdtqt.y bnt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere d2fgl*sl iyj wl3p,41of equal diameters are each given the same charge, the electric field (E) midway b1 pyi*glflj4l wd,32 setween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whv+2w8mgrh0jk zwe 1i4 ere a uniform electric field is directed stwr2w0k+z4 g8jevmhi 1raight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ky/c/cz gb4: x/c7btncharge

  A positive point charge is enclosed in a holloh(bmnac5- mbfr s/9rh i0n/9ps t-pd *w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electri bcn9s-(n/tpbm5hph*m/ir0 9 rfd as -c field at a point directly above the hollow sphere has

State three properties of conductorsd ::lc4*xt wp2py* kpy in static equilibrium.

State Gauss's law.

  The charge carried by9c* m-erl gwl7 -oka,s 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 many momvn)6xp95,eu4tqt 4thgn sm u07;f pzre protons than electrons does this piece of ppm tqp )445eg;ztx6m, hsn v n7tuu09flastic have?

  What is the charge on 1 kg of protonsno7g n+e ; orx+(0mqkj?

  An atomic nucleus has a charge ofketp9k*imx wn 7) d60htl.rjv2o8/iw $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 ls po8acqch3ro :7. :scm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the eless3:rcao. qhlc:o8 7pctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1b, ,+ qkrtu hcd onr7 8q-i3c1adu,*zus4:guj.0 N. What is the magnitude of the second c3k+rg us,u- 4t,cu8z*bod ,drq:71a qniujhcharge?

  Two 1.0-C charges have a force bet*2zm rsda0(io* t t:carff80fween them of 1.0 N. How far apart are they?

  The force between a cp 90t1/ c 1hfnfes+hd$30 \; mC$ 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 thec, bnlq 1z)/jpy are moved to a new separation of 8.0 cm, what is the electric 1jcpnzbq)l ,/ force between them?

  Three identical point charges of 2.0 mC ae w5qqdf7uo zl)) ,v.cre placed on the x-axis. The first charge is at the o e.5dv)z,qclu)7f q worigin, 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.m,4eduiqc kho* +2w,;ixikxy. 9cnl,0 mC is placed at the origin, -2.0 m C toy*do .h,wm, 4kki ;,+i l9cxcnqiu ex2 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: Q+snw2m: t h.xga.u.vn1 ewp2-ohs wb+1 = 2.00 mC at x = 1.00 m; s nhnpu+vwo1.gs2w+w am. .h :xe t2-bQ2 = 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?

  A point charge of +Q is placed at the center of a square, and a second99s isn ;a x-wi7a23rz)kvcye 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 cornk xe739szvr) -iiawc;s a 2ny9er?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 2 suvvf1l0 .he h. mcqv9je2b;0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnvel. 0 9sm ;vb2uv1qeh cfjh2.itude 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 nCx,**rmncd8 3jugdp s-w mp7p4 is at (0, 0). What is the direction of tmpsx3mw7 *np*pj rd,d g-c48uhe net force on the 5.0 nC charge?

  Three identical charges0oaie;mb 0n 29.k fjlabu*hwwl929 6ecx9jau of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on anyw;ju02j meia929 oax lk.bc*lnea96bf 9 wu0h one of the charges?

  Consider point charges of +Q a-b*f 4 w0v 9 9nky6.jq/gacmv otafnc(nd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it av.vocwkf /g 99j-4t mnc yn bqf6*0(awould be zero?

  A +3.0-C charge is at the orig4-ef1poqz7no/vs;7mvp/ bp exs 6y 4win and a +9.0-C charge is at x = 4.0 m. Where on theb/epp-ey4s p1sof74;7q v wm6/z onxv x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thep0/djomu,*r w l9s ks. origin and charge -q is placed at x = 2a. Where can a third positivels 0/ jkmdpsro9uw *,. charge +q be placed so that the force on it is zero?

  A copper penny has a (a;81xhbstqv mass of 3.0 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 the attraction of a o 36sy,8j fhrw cpc(je:o o(y3fixed proton some distance above it. How far above the electron y,ejpo 33o6 fc j:8syh(o wr(cis the proton?

  Two 0.20-g metal spheres are hung p ,jgfm tmh1gu02/;utfrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the e1mm ghpj0 2g;ut/ftu ,lectrostatic 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 chaf*t:qgi*sq :m4 o6 ot2kpg m-qrge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?goq m26 gi:-tpt oq:k*4fs*qm

  What are the magnitude and direction of the electric field at yzqvvw7g ;-o12;kibx a distance of 1.50 m from a 50.vvzi ;1kxy -w2o;b qg70-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the7b. nhb9,q u-q)yzd)u)o ms le electric field at the location of the te )qoms),9nqu d-u eh b)bz.7ylst charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of4fk87j cz9esu the electric z uk4s9fc e87jfield?

  A 5.0-C charge is 10 m from a czd5241se aoi*byzs9small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cha*so1z9b c5sd2y4 eiza rge?

  Two point charges each have a value of 3.0 C and are separated by a distjd- eck2u.a1dplp6, sance of 4.0 m. What is the electrpu6sc,2e dpj ak1l-d .ic field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 c c(ku9,dwec 4pa7bpg+rhmq*z ed* .(z m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elqdrkpcae,d(g +z4(7*wc9 p*mbzh e.u ectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c/ vj*nd x q: 88ven6gzq+c8ryqu:uf2qharge is placed acer qzqq*6nnvu q:g+vu:jxf8y / 82 d8t the 50 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 areooz,5ujzz3k q 37uw.n bu4-p59mauxv placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mizua4n-m. jookx5qu vu 9 7zb,3w3puz5 dway between them?

  Three 3.0 mC charges are at the throiil3o x 701aq74ip; sm- svogee corners of a square of side 0.50 m. The lpm30iqog-s;o7i s xovi7 a4l1ast corner is occupied 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. Charges are placed at the coth vw.2o v0w tqk +o4ro28r4wurners of the square as follows: +4.0 mC at (0, 0); +4.wv wo .qwr44ooh t228u+tvk0r 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 o*xouq8:-5oe z,fj ilkn a charge of 5.0 mC when it is placed in a uniform electric field.5oqk:uejz8i x-,of *l What is the magnitude of this electric field?

  A particle with a charge ofp; i)r tkj-f4b 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 g:pv2 a+r7m an v:3rxgg0 vko/in an electric field of 6000 N/C pointing downward. What vxkg/na aro: :27 vg3vmpg0r +charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargenbbpv1lnn1 85 g4 suf:4s6pqh of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravitylp1qfgpvs1sh58 n4u n :46bnb. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. W*b b+phaw5f jpn( bpr1i/a5;t hat is the magnitude of the electric field 5.0 cm from /+rb * 1nab5ah(b5p ;ppw ijftthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eihjm(kcy uk* d; m+*)olectric field 6.0 cm from the centeikmm*o*dhu(c+ ky; j )r of the sphere?