State the law of conservation of pwct30* r)lisf-k jc 6electric charge.

  Is it possible for two negative charges to attractkgpcfpy01(w1 each other?

  Is it possible for a positive a jw3vaokx )me-2*ca3g nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla6o y8(2 rhikee6hc*x0uhwd -w ss rod acquires a positive chargehkuyr*2h xcidw 0-w66o ehe(8 and the silk

  A proton carries a

  The model of the atom 5/i:8bfkcjbl0ti js. shows a

  A neutral atom always /ss l,3d63bt ibt6wldhas

  An atom has more elect;la2jw p*p d;wrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are riex2 f ,0 c6aofou :dd9:ka;heeferred t0a6do:e,diou9kc :h ef2a;x f o as

  Materials in which the electrons are bound very loosely to tu03bczz 8ls. vafb( u,he nuclei and can move about freelzbvb03fc,( asl z8u .uy within the material are referred to as

  A negatively charged rod is bro7 uw4uqtoqm l3n 9w(/uught near one end of an uncharged metal bar. The end of the meta7 9t 4ulwn o3uumq/(qwl bar farthest from the charged rod will be charged

  Sphere A carries a net positive chark o8ax 1hze;+v3 lsy5 yh22zcwge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thaez 2c ;klvshway8hy21+ zx o53t is grounded. Which statement is correct?

  How can a negatively charged rod charget)chlwq80 cypizx *f+ea- y+2tg;z c, an electroscope positively?

  An originally neutral electroscope is briefly touched witha u2nh 7,q2mp*ofcegr2 qs5p4 a positively charged glass rod. The electrmh ef2* 7pcgsrq2opa 2q5 u4n,oscope

  An originally neutral electroscopx h7cv/n3q*yqyybx4jo+*9*ect4z iye is grounded briefly while a positively charged glass rod is held near it. After the glass rod isbjn 744y/qyyc eh+*vo3xxqytz *9ic* removed, the electroscope

  A positive object touches a neutral electroscope, and tz4arp++4y y6l rdo d:phe leaves separate. Then a negative object is brought near the electroscope, l yprd r6yao4+:+ 4pdzbut does not touch it. What happens to the leaves?

  A large negatively cawo8q2*e.z : -e7 uhjvpfirv-harged object 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 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 firo-aievz.: qh2f u7-v j*e8p wnal charge on each ball?

  Charge is

  What are the units of the Coulo +2 d/8dlxtacqe ;2ynimb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeqwpd z99kfq gq;mkskvz :8g ;sz+q8+9 is larger in magnitude gk ; kz+:8s;qfw9vqm 9qdzskq98pzg+than the second charge.

  Sphere A carries a net charge and sphere B is necnup;q:2t +kg utral. They are placed near each other okngcqtu+ : ;2pn an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on (xxoi pm+vgol)p;-u 7 both objects are doubled with no change in sepo(pg7 ;+vipx-)x mu loaration, the force between them

  Two charges are separateev1mms0f/7c 0dl uc:0;cfn jk d by a distance d and exert mutual attractive forces of F on each other. If thekn0 dcj1f;femu0s/vcmc: l07 charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eah pcwup ih2921d3ex x+0ols z/ch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation dist 92 x0de iowc23ps1/ uxlhpz+hance 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. W+ f ri 4l7zjbcxne0m49hat happens to the magnitude of the force on the proton if a second electron is placed f4 4ze0n97 lr+j bmxicnext to the first electron?

  An electron and a proton are -xm :3s-dap lc3 x4wesseparated by a distance of 1.0 m. What happens to the magni3:c 3ax sxwm-e l-psd4tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separafx2ma( p*7 ,db+21hlrgdbtobted by a distance of 1.0 m. What happens to the size of the fool2(rtmx2fbd*,7 d p hb+bag 1rce 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 squareeoh a07 ecfxh5*8 7sjh. 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's78fhcx7 h*h ee5jas0o 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 thek10n:4up /fnavx n 5nj centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of nxk /j10anv54nnfu p: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 vecgbml1o 0-f6 9ydniuf;tor?

  At twice the distance jqnwicd, - mcm (l9l a6r8y1rbghr49 *from a point charge, the strength of the electric field

  Is it possible to have a zero electric fiedcqe/f u4 hwn. ez:k.7ld value between a negative and positinzeqf/ kudce74w.h :.ve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positivqy;d.r3 p3q tde charges along the line q3dty;3rp qd .joining the two charges?

  Electric field lines ne.r2) 2.z0;f b vafwoyw0 4iaasrp;owcar psitive point charges

  The electric field shny*.f9myrrz b+ubf ,4own

  Can electric field lid(n7fw)d:tydxb9 osdmhp n /k98i*g) nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placdl f-zhz p:41ued in a uniform electric field. Give a statemel-dh4zz1fup :nt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sd ydy5i(dww *fv8h (j-phere of equal diameters are each given the same chdfi-8vyd j(h (wy*dw5arge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a ung51 l/mbmcebs25 phd 1iform electric field is directed straight upward. What can be said concerning the charge on the blls55md 1g 2mh/b p1cbeock's top surface?

  If a conductor is in electrostatic equilibrium near an electric cna 7u-y)tv:qcj;x* qaharge

  A positive point charge is enclosed in a hollow metallic sphere that dc yrxh2 c.1/g(fhkh(is grounded. As compared to the case without the hollow sphere, the e(.f 1c2h khcrgh yx(d/lectric field at a point directly above the hollow sphere has

State three properties of conductors in stad5 /a mr) gb0sd4ob9w5 r7xxyxtic equilibrium.

State Gauss's law.

  The charge carried by one ely7e2v y+ d xpjoa4x0i*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 a net c6i.v0e wmup8el zj bk2 9pvm0/tighh/:d2u4 charge of +2.00 mC. How many more protons than electrons d04e ik2mhpj .ivhw0cp zu/89dbt26ev /u:g m loes this piece of plastic have?

  What is the charge on 1 kg ofup 2+bo:dtt9(;metw j protons?

  An atomic nucleus has a charge ;eplzy5 y3*q 7fiwp +aof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separp p;46/rbnck*y *y khgxv+c1pated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mahk4py* +/c* k;pvx1c p yg6brngnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,w lk;;ix x3yt * f8p,c5(lapbh and the force between them is 1.0 N. What is the magnitude of thehl;it(w, *y3pbk8 pcl5;a xfx second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arezc)j sq9ui*ta0x ed *5 they?

  The force between a :+gtanxa m1 8otddu *4$30 \; mC$ 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 fmi l+:g v+fhw)jib+s)nvqo44orce. If they are moved to a new sepbiovsw4 )mgh:qi+ nj+v)+lf 4 aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chav( q ,5vgtmf.irge 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 which acts on the charv mf5iq,v. tg(ge at the origin?

  Three point charges are placdbi y l6xfql62p+0z +) 9wbtdled on the x-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 0+6wy+fdbl q it2) zd9x6l pblthe 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 ka oc- +c0-mqvfollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x c0am o k+v-q-c= 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 ml8 8 zlkr +k09i04haq9lfwjv4w z8s cof a square, and a 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 + 4kmzaq 8sw kz9l8v 89rjcw0i0fl4l hthe 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); Qoeh;x t,3 dzosxpzdpr2lm.n 8d8r1/12 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the 8dmxz8,ls hx1 / rond.r to e3;dzpp12magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.02 w6att 7lb2jbal49or nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net ft2wr a a2l9t 4jb6lbo7orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thgkc4h8bdw 4 .b vlsk)6e vertices of an equilateral triangle which meaw.s4v db 8hkcl6b4)kg sures 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 +iya1(mblp 2 bgbhob+r -,:gx 2Q and +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 ch rp-2b b:l2gx(oa b im+bg,yh1arge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig/ /c9dr ouq)tnin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be p/)dro9tqcu n /laced so the net force on it is zero?

  Charge +2q is placed at-kr0p7( yqfek the origin and charge -q is placed at x = 2a. Where can a third positive charge +q beqpf ykk-70r(e placed so that the force on it is zero?

  A copper penny has a mass of 3.0l3ein oo, qfad.porgd)w,*7. 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 attuy+ g. oq1rg3jraction of a fixed proton some distance above it. How far above the elec.g+gr3qoj 1yutron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncy0 (+a0am w-)3gquu n*hxbqpg onducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threayp(3 awq)qbah gm0n0u gu*- +xds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of tsa2 r inag*7 8lfk+a1ql kw+eqf0(/cohe electric field at a distance of 1.0 m kq7 r/(ia2folac10ngf+ewa * l+8q s kfrom the nucleus?

  What are the magnitude and direction of the electric field at a gd 6cn-b-k/iq distance of 1.50 mndgc6 -bkiq -/ from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ,ax)cg1hw9 nu1)( z7d +pwrq;qjk,zpwebk6e elec,k6 (q7g1 edp hkw,wzbap1c) xzq;r9n)j we +utric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is ptt jw p 45g0b(o;a9nw9*layk the direction of the electr 0wgp4jk p*l9awt ;5(y tbaon9ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnkf. q0t2 s/n29ohn58 myo8wkafqjd9 fitude of the force experienced by a 1.0 nCjnqyf9 25.n 8dsk0 /fq9toawkm8hfo2 charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C andow ocrkd: .pr(-k;pc/po f7*v are separated by a distance of 4.0 m. What is the electric fof7kr-cdo .w*v:orpk(;pp c/ ield at a point midway between the two charges?

  A 5.0-mC charge is placed at the yic9 a7w1(1fhyqe zk)0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielde)f a qk9(hw1cyyz71 i at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a y)t6xn)oiji,meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field6,)iy jt)ion x zero?

  Two point charges of +3.0 mC and -k /2dk2/jya ib/cbsp-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field-by/2kb ckjd2/p ia/s at the point midway between them?

  Three 3.0 mC charges are at1s sqtb/(+i6bas8ocr 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 center 86 r +st/ 1aibcsb(qsoof the square.

  Consider a square which is 1.0 m on a side. Charges are placed at t, obtte3ah-b 6v8 7,rn pi9psnhe corners of the square as follows: +4.0 mC at (vh893 ,i tn7pb6- ba ,etopnrs0, 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 cha/nr0 .a.h a cbg:tcoe/rge of 5.0 mC when it is placed in a uniform electric field. Wh:nc0. .c/th aeg o/abrat is the magnitude of this electric field?

  A particle with a charge of 4.0td qprvfssie/9/ b5+xp)hgb8 293la f 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 field84fx,8es r jdy of 6000 N/C pointing downward. What charge mr48s fej,xy d8ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries abbj2l-w6q g39c;i l w4kip t7oy7 qb5o/ btj1s 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 magnitude and direction oiw9 g;otb wsb/5bboilj 2qltyc-74 7 3kj6q 1pf the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i w.nxc7l47ct,dp.qq ks the magnitude of the 4nw.q qcl7x , d7p.tkcelectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge-76tt hst,waxy us;u3 of 3.0 mC. What is the electric field 6.0 cm fro-uusa67t,t;ywxs3 h tm the center of the sphere?