State the law of conserv7g3a5 nvbe0j3od wp8vx d7l u1ation of electric charge.

  Is it possible for two negative chargeso2 liu7pb /tts0-rkv/ to attract each other?

  Is it possible for a positive and a negative chargnyow9m+-8, s2pnrfy(h pt.3mhk pa* he to attract each other?

  A glass rod is rubbed with a piece of silk. Durit5b2w2qzfx .brqk ,xs- 4u+ edng the process the glass rod acquires a positive charge an.xtqe+sk 54b-2w f, q b2xdurzd the silk

  A proton carries a

  The model of the atomcx hfbg5wfj j :-bz7h (3vr-8m shows a

  A neutral atom alwayg wx:l )v-ep,xs has

  An atom has more electrons than pro1y jx7 8nmsb7atons. The atom is

  Materials in which the electrons tqfk dwcx 00jo.s146 xare bound very tightly to the nuclei are referred .o1xk 0stqwc 6 djf4x0to as

  Materials in which the electrons are bound very loosely to the nucleiv-1hapizmvc.,vb e 59 and can move about freely within the mater b-vm.cie1,v p5 v9zahial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. v0c .zog5p0kh.qmd6 uThe cmuo0.pkq 5hgz.6v0dend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positi4m +gudqqfy3c+l +l,k yhq-u 4ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. 4 4 h+dmclg+y,3+ulqfy q-ukq Which statement is correct?

  How can a negatively charged rod charge an8 bb1aj;lrhe cp)g d -jk:gv (.iex5u0 electroscope positively?

  An originally neutral electroscope is briefly touched withip pb2oycs; p+7p) xt/ a positively charged glass rod. The 7/c;o 2pppt+xisbp)yelectroscope

  An originally neutral electroscope is grounded briefly + k+bz1/zmz;.eh x dyzwhile a positively charged glass rod is held near it. After the glass rod is removed, tz+yz+kmdeh;/1b.zx z he electroscope

  A positive object touches a neutral electroscope, and the leaves separate.:f gxpc +a9,ax Then a c9xpa :fxga,+ 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 ann sascyy.g+ism)szs6t.08 o( insulated table. 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 first ball, strikes the first ball, and stops. +8 oaci sm nty(.0y)s.ssg6s z 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 f lsy:dcy 2 j(7a+/+oxwt,ybsCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger t.swh0p eyvjxi.sg*s 681m1i in magnitude thani8 m0s1 sexpsjigv..*th1w6 y the second charge.

  Sphere A carries a net charge anhq* -i.d kl.bad sphere B is neutral. They are placed near each other on an insulated table. Which statement a - i*hqlkd..bbest describes the electrostatic force between them?

  Two charged objects attract each other with a certa 3xsp; hh2 yx3em7ign5*(efqdng3mm6in force. If the charges on both objects are doubled with no change in separation, the force between t(i fpene*3yhq3;sm3g7x6 x5dh2g m mnhem

  Two charges are separated by a disp*4p rfj,j a2wtance d and exert mutual attractive forces of F on each other. If the charges are separated by a dista4a f,j2*wj rppnce of d/3, what are the new mutual forces?

  Two charged objects attract 3slc0c qvsy7n*x : 1j0qvfc0heach other with a force F. What happens to the force betweenl:xcj* vq7n1shs c0y0 0 3qvcf 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. What hap y2 ds8(i d8 lhsi4d/k)e0jpxr,.n 5e*qjnnpcpens to the magnitd* 88/prsi2neq 5k0. cjn() dd,l jxes nyh4piude 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. Whai j4jv:5gqh4mlx8-j gt happens to the magnitude of the force on the first h5j:glg 4xvq- j4i 8jmelectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a+ 7c bo 5jr4jue;i+zwn distance of 1.0 m. What happens to the size of the force on the pcj 7r 4eb;+njuzow5i+roton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q isy8 tu7- xbjgcnl, /wjm:e0go+a6 sqv9 placed at the 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'nmwojc870 t: b,9a6-gl jg +uye/vsxqs 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 eqf v 6(:*ylarkszh9ox0 uilateral 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 o9vs f o:0yxl(6zrah*k f 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 vectorx k0sf wk6gk3jrx6, r+?

  At twice the distance from a pointn3*cw 7a*6r nwof iixq9/d fx;v9ri8 a charge, the strength of the electric field

  Is it possible to have a zero electrg ,14)w uugwvwmb1i:d ic field value between a negative and positive charge along the line joining the two cw)gumg1u4 i vbwd1 w:,harges?

  Is it possible to have a z; dar+-axg b)www+ir-f j z;(cero electric field value between two positive charges along the line joining the two c ;zw- fx (aciwrb +grwdaj+-);harges?

  Electric field lines near psitive vtalv980 feu;5d zyj. point charges

  The electric field showoia+jz.+az w6 n

  Can electric field lines intersect in free s+-y*7j4;jsbvtn iysrj 2 qga3mu*ht2pace?

  A solid block of metal in electrostatic equilibrium is placed in a unifor iijwa*;jc3v8 m electricaii8;wcj3 v*j field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a l(vdncc-*4q;85 gjv z,hrbdc hollow metal sphere of equal diameters are each given the same charge, the electric fnd5 (bvzv hgc-,;jl* r4c q8cdield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg6y, l2,,w8tdylmy jpy pp :f qd0)e1hpion where a uniform electric field is directed straight upward. What c:d0dh,wp, 1,j fye p)py6ly2qtlpy8man be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c0:-xpgqui(zfhe,e 7o clu,1;5hvftu harge

  A positive point charge is enclosed in a hollow metallic sphe: gl rw *mq g9+tb2*ivojly2fk g*1:hzre that is grounded. As compared to the cash9k+w* t bzi2y*g*l lrj2qgmgvf:o:1e without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i9 oc.c,sv8s 900xonibuksr*l n static equilibrium.

State Gauss's law.

  The charge carried by afzex,)cw:)t 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 more protons thapbh 6b k2:i0txn electrons does this piece of plastihbx: b2itpk0 6c have?

  What is the charge on 1 kg of protonsebyik o0fh0.2x 5e8mc?

  An atomic nucleus has a charge ofu dn2)p(j* ezk $+40e$. 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 va.fj sxx :d,o9alues of 2.0 and -4.0 mC, respectively. Whatax .djfxo s,:9 is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m 15mv47eh w rl(jvgj 6pfrom a second charge, and the force between them is 1.0 N. What is the magnitgp(rh5mj4 1jv 6lew7 vude of the second charge?

  Two 1.0-C charges have a force bet 7pie-*3p4nfssc 0/lf/rq o57mssxiaz+3 eraween them of 1.0 N. How far apart are they?

  The force between a jpuv93 o pg349endw9 s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienm4 cvp rvkq8(yrnf ms:;r9 eu , 6.fg-wfuaw/+ce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them :emfagf9 6v8r-;pfrmsuk, .cun /r +ywv4 w(q?

  Three identical point charges of +9 *l7vs:65gfo st sdiqcfw)f2.0 mC are placed on the x-axis. The first charge is at the origin, the seco5 dfq:*scgfo+slv)i wsf t769nd 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 oms) (erfmxlf(*4 f3uqn the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right atf(r3 4 ) eflsm*(uxmfq 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 mahabhq0f64pl fe lm,8 rc057 x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitud0am l6 f5rlm7bhc8,h0 aqe4pfe of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square,5(3w;mp wk,,fh z,whs6md hct)kvbl/ and a second point charge of -Q is placed at thekmsz (,5w3/ wb h;c,kt)fh6dwhv,l mp 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 59r 8if8 3kfs13a-e zpequf(f i.0 nC is at (0, 8uf3eas1p i3 k8f fzief -(rq90). What is the 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,m/3/zad*hz4 b aioji5 0.10 m); Q3 = 5.0 nC is at (0, 0)ih/*b/zzjdi m5 a 3o4a. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a0* +h+xsz ous.ximc-l n equilateral triangle which measoh zs c0su +m*.xilx-+ures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arc wh95o0qo/n.:w ojznwr, kq;e 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 wouldwo nq kw :jhnr/wz; oc5,9o.q0 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. bkty;2a7;uu:3uedxy5j;v nl tze4 + i Where on the x-axieue7; na35; :i4tybl;uyvtd2x u zjk+s can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ;k.tsn 6vfp s.charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thk;s.spv f n6.tat the force on it is zero?

  A copper penny has a mass of 1s/q nilk )vy(onj).t 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 g vv4h2rkt. :wa fixed proton some distance above it. How far above w2r.4 thkv vg:the electron is the proton?

  Two 0.20-g metal spheres arer;l9j( -zbx 3ng:ry gt 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 until the angle j gnzrgxry3 blt;-(:9between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4fxoo7tb4;xqz ney*d ,1l;z ,b0e. What is the magnitude of the electric field at a distance of 1.0 m fromz7bd 4,* 1bl,oxz exytqo;fn; the nucleus?

  What are the magnitude and direction l365+rdy x.mq dplsx6ojltbwu9;(m46ov x/ gof the electric field at a distance of 1.50y d9ov(st63j 4x lpxd+qu/l.5bgl xo66rmm ;w m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofsy -k qr*mhvsrz5j bace8h8u-a8fx m6-j )- (g the electric field at the location of the test charg- hx(e5fq *bu8)ymkj avjrr-8 smhz6-a- s8gce?

  A 5.0-C charge is 10 m from a small test charge. What eaqq-lv8 17mv is the direction of the electreav8m1- ql7 vqic field?

  A 5.0-C charge is 10 m from a s30 4bc8 rvdpbkmall test charge. What is the magnitude of the force experienced by a 1.0 nC chargekr83vd 0bc4pb placed at the location of the test charge?

  Two point charges each hm h39.:nmr og ksk bk57h,cc5uave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwamn:c7hgb 59 kscro .hm, kku53y between the two charges?

  A 5.0-mC charge is pfz6 hm4.,oeppt f(t ab/xs.:olaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fixf t.f /4h(o,me6 ps zob:t.apeld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0nizar 3/gfqmj8u*n .2 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 2n z jma fi/u*r.3qg8nAt 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 = 0 ana 5m *ohj ,3,o.w 1dato7vudcid x = 0.20 m. What is the magnitude of the vc5o,,da oi1a3 h7mw*j tud.o electric field at the point midway between them?

  Three 3.0 mC charges -e(j78q li mhcw(wl ph1d/n.f are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cenhwqdij(7-h w/ f1elc mln.8(pter of the square.

  Consider a square which is 1.0 m on a sidyp0 ( r3jzni0 dpv6v+de. 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, 0); -3.0 mC at (0, 1). What is the magnitude of thvj( pdvp3y0 60zid+nre electric field at the square's center?

  A force of 10 N acts on a chargec8nt w.esj2la2*ebz22 ;1n;q s o vojg of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electrica;w ;j2jozb8o.gl 2vs2cn*qs t1ene 2 field?

  A particle with a charge ofp myf/pn;2s(h)jp ca: 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 electrbems 9zyk q7z +.xw/*uic field of 6000 N/C pointing downward. What charge must be placed on the ba+x7 wqz.ys *ub/emz 9kll for it to be suspended?

  A foam ball of mass 0.150 inpl18i4xd2 1ima1fc g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the f181 xi ma4dni1ci l2pmagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a char)6y66kx5 / wc*pzybo)4shjy: k npdcdge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphedk/c 6zyyho )dy*n 4k jbp:56)xp csw6re's surface?

  A metal sphere of radius 2.0 cm carries a charge of tnr22p+g tb15ah zu9irz*/ud izik 9owb 356y3.0 mC. What is the electric field 6.0 cm from theobrt in r/a3pukh6*uwyd 55iig 9t922+zzb1z center of the sphere?