State the law of consiwp ryy7ld95viy-6 ow*al* x3 ervation of electric charge.

  Is it possible for two negative charges to yia.mrqfrmi3 e 8ce f0c7f06wy2(-mvattract each other?

  Is it possible for a positive and a ne0xx .4p -xz0bzkk ;a;i3(m5fr wqrxrngative charge to attract each other?

  A glass rod is rubbed3ng pnu g * see)dhvh2s;oqk9u97r 36d with a piece of silk. During the process the glass rod acquires a positive charge and theus ;g nhg3v73qd29 uokn)e9srp*hd e6 silk

  A proton carries a

  The model of the atom shows wwup0w. d hy-l8.d3vs a

  A neutral atom alwayvx0x lqvh,ls p6-1rt9s has

  An atom has more electrons than p03x)ach ffh;0, tjib rrotons. The atom is

  Materials in which the electrons are bounwty b0 *ce;lj2-hfpv8d very tightly to the nuclei are referred to l02;bwjvfh y e-p*c8tas

  Materials in which the electrons are bound very ltr3+1yrea f(woosely to the nuclei and can move about freely within the material are referred tt31r(r af+weyo as

  A negatively charged rod is broi+mg3lbau8 3aef-n ;lught near one end of an uncharged metal bar. The end of the menglua3ila; mf 3-e8b+tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, ando ewrz6co253f*aj fk , 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. zo ,*6f o3rkjc2 5wfeaWhich statement is correct?

  How can a negatively chaqlogk21*+vi lrged rod charge an electroscope positively?

  An originally neutral electroscope is xvaqg5kf,h9 ( briefly touched with a positively charged glass rod. Tgv5( q9,xkahf he electroscope

  An originally neutral electroscope is grounded brs :+owde t0evk,*otk,iefly while a positively charged glass rod is held near it. After the glass rod is removed, the t,w+ *vdoko:te,k 0eselectroscope

  A positive object touchqhza;79xza 5-nirz in:vy ,* qck 5h:2er5mjxes a neutral electroscope, and the leaves separate. Then a negative object is broughcqkn azx7r 5a;ie:rz yh9*xim v h,-z 25qnj5:t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabqi+l- :,uu rlvle. 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 final charge on eachr+:liuuv q-l , ball?

  Charge is

  What are the units ofrb:b z a,a+i/p the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a hrngar c(4u,a - ui3rkloib24er,9-jdistance d. The first charge is larger in magnitude than the secon-b93 rua( nirgr4,u,j 24krl oe-ch aid charge.

  Sphere A carries a net charge and sphere B is neutral. They are 9r. fm o2jrt-c4)u du.hntwr3 placed near each other on an insulated table. Which statement best describes the eleccr.n.fu)9 tmow 3u rrdt4 -2jhtrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o.zhzjnjziqbg+qd4 l3w..*6 g-bdqg9 n both objects are doubled witz ig3gqj4*wb9g- +.6l qdqhzbdjn.z.h no change in separation, the force between them

  Two charges are separated by a distance d and exert mtdw:up.: eh /futual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuaue :d.t: wpf/hl forces?

  Two charged objects attract each other with a force F. What happentby0 w.yrf+/qs to the force between them if one charge is dou0/ wyfq+ytrb. bled, 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 toy-i2sva1x- ,uur d g.y the magnitude of the force .ryi-xd1 sa u yvg2u,-on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedai/ 5v hdkus*/jc bl(; by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed ubkhj5 l*; i/avsd/(c next to the proton?

  An electron and a proton are separated by a distance5:zu s5jd )dme of 1.0 m. What happens to the size of the force on the proton )mdj5s : duz5eif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centewk zdpg-v5du/fbo3j 9 :f cq-0r 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 0 53vzd k9- d/:foqjwpcgub -f2.0 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 equilateral/jl*01ofou2pf rm lb .oqo:c5 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 m u.pb m01ooj/lcf:roo qf 2l*5agnitude 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 ;*ht - 126ozcbm h5ngdfvzr-voy8h. ja vector?

  At twice the distance from a point charge, the strength ft)+o h2h sz0ad l/5meof the electric field

  Is it possible to have a zero electric field value between a nh 4(a+ ,d yion+9n5gsrls tcj)/+cxxtir88mv egative and positive+ 9xnox,sv gic4anr5+ )8ht8 ct/sy+djmrli( charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two s ofk4f7odd,h)/ *rg (s eeqw2c* knf7positive charges along the lincwe)sokg/2 k77fe4h( d offdr, *ns *qe joining the two charges?

  Electric field lines near psitiveea eu- mqdmy*0*:jgb 9 point charges

  The electric field shows38s 9lje9yycb48vl)f. 6p wuwl0mern

  Can electric field lines intersenjc06 ccj*:e uct in free space?

  A solid block of metal in electrostatic equilibrium is placed i0 0hyaw+vo :znn a uniform electric field. Give a statement concerning the electric field in the bl:wayoz 0vhn +0ock's interior.

  If a solid metal sphere and a hollow metal sphere of equal difzr2;j gt+4gatvd-h88j5yik ameters are each given the same chartfz5ki2 48gdjgt ;+ry vh-j8age, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests gt* ka/sdx,l9on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block,9*xgk/s latd's top surface?

  If a conductor is in electrostatic equilibri7lyl:xh+v b +gum near an electric charge

  A positive point charge is enclosed in a h;9bst4dw5xd v ollow metallic sphere that is grounded. As compared s5 d dw;4xb9vtto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coks8 f5qt9:5akmbg jcgp9xuly ex,+,3 nductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele1* x , slzideh:+lsmdmb,ny s7/mb1;tctron 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 man,guc kzhbv5 fg4hm +2j 6kdw;5y more protons than electrons ;g 5w6z,hjkg5bmvd+uf4hc k2 does this piece of plastic have?

  What is the charge ovkw 58mhv xt - nhmys(f5sc/;2n 1 kg of protons?

  An atomic nucleus has a c v:ws( z8zy.mzharge 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 cxk s+b5(td trch) :gk1m, have charge values of 2.0 and -4.0 mC, respectivelr+)txkh:( cdsb1kt g 5y. 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 *a1imcrb t6uqx/rn 6gl; g044pzy.lnbetween them is 1.0 N. What i p gmgi;ba0qxn6/lr tny1*.ur 4cl4z6s the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?;)stb, oyfouq pc8p44

  The force between a :z/i+h+kw )etmbq j *i+xts4s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmi( dq hpq7/,n rgtgo8. apart, experience a 1.0-N force. If they are moved to a new se,(7tq/d .gri nhqop8gparation of 8.0 cm, what is the electric force between them?

  Three identical point c86yv m,l rtpz9harges of 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 electr,6l tp98ymvz rostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at a/ 1,wdy(5c4 zeuzthqthe origin, -2 ywh,aedt /quc(4z1 z5.0 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 charge at the origin?

  Three point charges actb,x/+jh, i*pe oa;xif( 6lcre located at 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-mfl;x h+et,6c p(cx* iiab, o/jC charge?

  A point charge of +Q is placed at the center of a square, and a second point c vnz jg3hazk.p d;(p/0harge 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. Whndzgp/ak 3 v; zh(pj0.at 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 = 5.. pwhrnb 2fg9del,*4 9sao+qc0 nC is at (0, 0). What is the magnitude of bsl4.nr 2g hd*c9+w eqf,a po9the 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); mlp-my*hb +td t-,2gk Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC -pyt+h dm2kg lm,*-btcharge?

  Three identical charges of 3.0 mC are placed at the vertices o-5vw) 0)hn bzsliqr2 wf an equilateral triangle which measures 30 cm on a sidelw0nbs v q r-w2)hi5)z. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wi2ud6ybbn( ,hy wwg 9jpy;p: q 23ckq ;ta(eb3hich are separated by 3.0 m. At what point, on a line between the two charges, would it be qp , w gnh9bk 2b; 33:wj2euai(qy(p6t yycb;dpossible 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 any+ + lpjsd8-kid a +9.0-C charge is at x = 4.0 m. Where on tdi+js+8y -plk he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at /d,yb.jm.;tdck-a *k k lbvk( the origin and charge -q is placed at x = 2a. Where can a third posit c ;,.jkd ak.*tdl(k-mk bb/yvive charge +q be placed so that the force on it is zero?

  A copper penny has a mass 14q:pesxp2xwib8z)dof 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 r :da1uxdhm4z7 arljooh6(sigphb.si; 54 44against the force of gravity by the attraction of a fixed proton some distance abovblhu aj s5r(hz7xirdph i . a4d6g4414om;:ose it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a 5mzt -jrysw5 hlt1.0gcommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the-. r0tgly51 zjmwh t5s 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 magnitude of the e g 5nyig8tb6a8oou6q*lectric field at a distygnq8o * 8au6bo tg6i5ance of 1.0 m from the nucleus?

  What are the magnitude and directiojbuynbw a 29 8cnx:vet3 k520fn of the electric field at a distance of 1.50 m from:9t xbua3k w5ev2b80n fcnyj2 a 50.0-nC charge?

  A 5.0-C charge is 10 m frg;eh7 hw,j,jht34tqyq k;lwa8w/tt; om a small test charge. What is the magnitude of the electric field at the locj,a w;l;h hj wy twgk/tt3 q48q7ht,e;ation of the test charge?

  A 5.0-C charge is 10 m from a:tbx as)g 9 xcs 22 nrobqp;q(*1fuj+g small test charge. What is the direction of the electric field:;gc1x*a2sstgq ub( r9pbq)2 f+noj x?

  A 5.0-C charge is 10 m from a small test char2ho . g pv65x3i*of cu3t8tqehge. What is the magnitude of the force experienced by a 1.0 nC charg862pv5xh tg*uqt f3e cio3oh .e placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanczzs-7 ik1fl itds;(z5e of 4.0 m. What is k1;dli z 75ztz-is f(sthe electric 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 a -4.0 mC ch ;pjgplj v0.8zarge is placed at the 50 cm mark. What is the electric field at the 308j.p v0 ;gpljz cm mark?

  A 5.0-mC charge is pl,pq2uy8 l;qyuqa z3e 8aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pointzupy2a;8 qe3q,lqu y 8 on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are px (x5ue)j9jdub- l/vo /b1yb ylaced at x = 0 and x = 0.20 m. What is the mag/ byxbbvue9ly1j dx-u 5(j/o) nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa*1 py o50vlaajre of side 0.50 m. The last corner is occupied by a0vpy*j laao15 -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on b22wdiaq /tr0a side. Charges are placed at the corners of t/0rd2t bw 2aqihe 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 the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it -. :r* pauvnviis placed in a uniform electric field. What is the magnitude of this electric fivu ar.- *i:pvneld?

  A particle with a charge of 4.0 mC has a mass me(.ua 8n u5wyof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in 4yamewcpec 5yxk0-kg5)b s:) an electric field of 6000 N/C pointing gy5-cex se)bkcak: w04 m5)pydownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball c1vk875xw 1wl+k*isn*xh vww is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnit71xicl5 k8x vw ws v+nw*k*wh1ude and direction of the electric field?

  A metal sphere of radius 10 cm carrc8p60g8pq; w:ky e6- dvu lprjies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfaw evcqpu08jr8 6 ;dykg6-:pplce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tjza:.1m c(16f )pqzjw on0hhyhe electric field 6.0 cm from the center of1zjf6)ph 0c(w o:hja zmqn .1y the sphere?