State the law of conservation of e8 qv:9eavefc9 lectric charge.

  Is it possible for two negauu bt3q3s5 svg()g 4eztive charges to attract each other?

  Is it possible for a positive and a*n e b(n-kcka-red*a, negative charge to attract each other?

  A glass rod is rubbed with a piece of silp(2 2 bcm44gbhlgt5dik. During the process the glass rod acquires a positive charge and the silb( 52 hgcbtg2 4pdim4lk

  A proton carries a

  The model of the atom shows *c5kyy 80pgs ca

  A neutral atom alwaysz4x 1kljlfzq : )y- yvmpc2x)2 has

  An atom has more electrons than protna 37ulb7x-bt ons. The atom is

  Materials in which t:x-skugi z)j )he electrons are bound very tightly to the nuclei are referred to i)x gkj)s :-zuas

  Materials in which the electrons are bound very loosely to the r +ptgbe .-du7d*f 2hq-rkzs1nuclei and can move about freely within the materir psth+d dgz-*7ke .bfr2-q u1al are referred to as

  A negatively charged rod is brough5cgsaj7 gz-(u t near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be 5( -sgujz7gaccharged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place0ij.vrp x94czxs kc(9eb t4c) d near each other on an insulated table. Sphere B is briefly touched wiszv9p 9 i xt0cck(x4.rb)4jceth a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros-q(yyj lbj 7w*cope positively?

  An originally neutral electrosnl7( 4:ht -lgyjyo 3opcope is briefly touched with a positively charged gla ho43pgtnjo7yl:(y l -ss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelfs9sr 89j1f(; r duocmy charged glass rod is held near it. After the glass rod is removed, thd rfsuo899fsj ;1cm (re electroscope

  A positive object touches a neutral electroscope, and the leaves separn u5+,4hluq*vb hu,s date. Then a negative object is brought near the electroscope, but does not touch it. What happens to theb+ u uh5svh4 ,l,q*dnu leaves?

  A large negatively charged object is placed on an insulajrx6y.emi8nn b w em/m (/+wh7ted table. A neutral metallic ball rollsw(7j ymerw.b8e nn+i6 mh/xm/ 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 each ball?

  Charge is

  What are the units of the Coulomb constzoy3hhr ,8 un 29pfq ,asr.sq3ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance de. iumek8f 1+r. The first charge is larger in magnitude thak.e m+e1ifr8u n the second charge.

  Sphere A carries a net charge and s;s i5 fi(*fo vab4yquh3zo;/sphere B is neutral. They are placed near each other on an insulated table. 3 /( oq5f*ibvzsy af;uo;4sihWhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.6:a cfrv//gx r If the charges on both objects are doubled with no change /rfvc/ x:6gr ain separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivetvz15cx: 9ve z forces of F on each t9:vvz15xecz other. 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 .4fhoay s tc/sxz8-y, the force between them if one charge is doubled, the other charge is tripled, and 8/4 fzys. -ht,cxsoay the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protopbue m+cg0aw2-fgb- wp 5+sb4n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secoufwc4s pwb+b-g05+ebpm 2 -agnd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha raqfr(6twdah wlumt+, 6,g04 t happens to the magnitude of tw6 h(ldf,mg6 urrq,a0 t4a+wthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1ds9)5r1ck 081un 1aapuil8z,c jltdw.0 m. What happens to the size of the force on the proton if the electron is mov0cjd dua) 51kr u,z1s9tc 1l8li awp8ned 0.50 m closer to the proton?

  A point charge of +Q is placed at 2(h*fwbm* rjsthe 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'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 t*mw(sf rb* jh2he square?

  A point charge of +Q is placed akzhny7)wu o3 gnyv4 -+(pkq0d ,5yyuzt the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's np w-h7q,k vzyoyd3gk zu+(05 )nyy u4vertices, 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 following is not a vector?qf q: ;p pwj+/dj wb2uznf0g9)1e6 zuq

  At twice the distance from a point charge, the strength of the electric fiel,gsuz(vwo t4/- i hob0d

  Is it possible to have a zero electrimn 3-l mp v8k mz 6s)u0g(bmzxv5o4z6fc field value between a negative and positive charge along the lz65)nlsg 0k uxfm-mz6 vmomz8 v3(b4pine joining the two charges?

  Is it possible to have a zero e hf 4z:eg+bb7rlectric field value between two positive charges along the line joining thg+rf :4h7zebb e two charges?

  Electric field lines c4ys m) ,otoo3ya r1s j+v 9lmg,y/.ycnear psitive point charges

  The electric field sho0 -cumwu;-)zifcnl o:-wt :onwn

  Can electric field lines intersect in free sa6(ef alz*(a jlbmud 1ho+(+ *)cghpmpace?

  A solid block of metal in electrostatic equilibrium is ibkzl ,v x4+ 4pdpy4d*placed in a uniform electric field. yx* 4pzpi4 kvbl+ d4,dGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equaegqiy1 :-cl28 wr ne6il diameters are each given the same charge, the electric field (E) midway between the centere wr8g ic ln1q:2y-ie6 and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformoea c1* )is9mc electric field is directed straight upward. What can be*c 19)aiocsem said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an -qr 4c5ks 9jd1/fwymjelectric charge

  A positive point charge is enclosed in a hot2vw 7)-r8pvk *vrvalllow metallic sphere that is grounded. As compared tpra-rk7 t wvv2vl*8)v o the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi-1 q zfe07p, czrs+gnjlibrium.

State Gauss's law.

  The charge carried by one electrooy(b7c cr ewv4x5/7h wn 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 v- r2ml+d-:oq zl lmk7protons than electrons doeol :z rvdmmq+lk72--ls this piece of plastic have?

  What is the charge om:g l,dyy;.r )nxymd/ n 1 kg of protons?

  An atomic nucleus has a 3k r5(jh jd*vgcharge 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 v nv-*:p/kjfg xx:u xs-alues of 2.0 and -4.0 mC, respectively. What is the magnitude op -kf*jn:xxu: /g- sxvf the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwefbd;l0u-9 + nu/b+fjvhot9lz9,csmxen them is 1.0 N. What is the magnitude of the secondmb udu9 ot 9jf- z,+lv9/+c0fls;hbxn charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are ww. -caqkxht6 a xrn+m6q/f- kfvxrb;c1n7;9 they?

  The force between a p08rqov8* kz3g0 gu5p)36tpltg wac j $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 ga nr; l3j.m2*,wwtl rcm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elec. l ;2lwnm*3rarjwg,t tric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firspxqjm1ksj 1 bg/1k.j7t charge is at the origin, the second to the right at x = 50 cm, and the third is at the 10b1kx/jpqjgm1k .js1 70 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 oaike m8i27u-k f +2.0 mC is placed at the origin, -2.0 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 forc ku 72-mei8aike which acts on the charge at the origin?

  Three point charges are located at the following positions:cs d vy8/b+;5mvh hbu3 Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 vc 5v;bs h bm3+u8y/dhm. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pl1*d ya7fq.3up.bh3 uy hwjlp2; sbq/qaced at the center of 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 the center. What is the magnitude of the force that acts on tlp wha . y; 33fuhsdbyu2.qb q1/7*jpqhe 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 a vu j;5gec(i,(* plizet (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is eiu lp (vc ,j*(iz;5gethe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m7hentg+3o00r rdfft*ww)v .bx ld2,db - h+ij, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ili e jg wf-7*f0+th0)dh ox+d3r,nwbvdbtr.2s 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 an equilateral tycqbfe9 / y,q7.n wl+zriangle which measures 30 cm on a side. What is the magnitude of the electroe,9n +bz7/ fyy.wcqqlstatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatdo9- gzj/ 7 ecr(ukug0 point, on a line between the two charges, would it be possiblc 0g-rz(jg7k/ o9ed uue 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 and a +9.0-C charge is at x = 4.0 m. 2 ifu -/q,yu6nq7m mvirf.qs 2()xn gxWhere on the x-axis can a third charge be placed so the net fo7qyr 2 f.nsiu/mgxxfvmq)(n6 2 ,iuq-rce on it is zero?

  Charge +2q is placed at the origin and charge -qqo2kh 4e/e -0ocx -dlm is placed at x = 2a. Where can a third positive charge +q be placed so that the force oo2-qee-cxhml do4k /0 n it is zero?

  A copper penny has a mass of 3sms6scbg0 tjf g,j23(.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 attra8fg p8s10xiyg ction of a fixed proton s i0gp8x1ys8 fgome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a un6:wu,kvxsq51fla0common point by nonconducting threads which are 3xl: k,unsqu56w1v a0f 0 cm long. Both are given identical charges, and the electrostatic 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 cha9tu2bhplf,sx y/*0 )9t zfhpb5+eaa qrge of +40e. What is the magnitude of the electric field at h / fuh,tt)9zabb2yfp5e0+ l9 s*qpxaa distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electriox;ib zrkm:( 4ab h1 5ic8aj3kc field at a distance of 1.50 m from a 50.0-nC ch8 mb:zrc1b h ia 4k;3ox5iajk(arge?

  A 5.0-C charge is 10 m from a small test chargerz7h wx /ynhzw-z -+4a. What is the magnitude of the electric field at the location of the rz-zxzhw 4/ywa n7h -+test charge?

  A 5.0-C charge is 10 m from a small tes/k4ecru(9biedimnk- .1 8 gs at charge. What is the direction of the eleckn/i8 1d .ebmk9aeg ( is4u-crtric field?

  A 5.0-C charge is 10 m from a/zhvii:bjg:r9l(/ 3z t mp 7yc small test charge. What is the magnitude of the force i v(:3zg/pb trhc9m/:ijlz7 y experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by j8 iv:6u/;5 lprrsfaeyzg 9( ga distance of 4.0 m. What is the elect5l(/96rz8fgjr;a gp s eu:y ivric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met;0p7zqy;m ls eer stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thee ;7 ;lsqypm0z 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargiy) 4+jqf 9nrlec/.ule is placed at the 50 cm lu+ jrn.ief9)4clq/ ymark. 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 are placed at x = 0 and x = 0.20 -y6n8*,4uqz mg5uwu laiunk, m. What is the mag,nu ugz n 5mu4i8wy- 6lk*auq,nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sis.8zp0 *eno h/cje; nude 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at ths/hj8nup 0c .ezon;*ee center of the square.

  Consider a square which is 1.0 m on a side. Charges are plary xipidadq.;g5.9 )gced at the corners of the square as follows: +4.0 mC i)a. 9 pg 5qrdxdyig;.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 is placed2s*y 4 (qo:qg) pjm ilwfu,3ae in a uniform electric field. What is the magnitude of thisql(ewfsgq:4p,a 2oymi) *j3u electric field?

  A particle with a charge of 4.0 mC has gs n2(6c)fdts3au, y-ka) d zga 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 ge,/ a8fwcs3 rju ap*qe58j9uq is placed in an electric field of 6000 N/C pointing downward. What charge mjep5au c3r w eqq9*8f,aus8/just be placed on the ball for it to be suspended?

  A foam ball of mass rdc 59+buwxs w4d5r,0 9r7wm, 0xdyez1bspsc0.150 g carries a charge of -2.00 nC. The ball is placed inside a unz5 edd ,, r 749d9px0b0rmcc+wuswsyr5w sb1 xiform electric 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 carries a charg-5lzsk -cn1i: l yybf(e of +2.0 mC. What is the magnitude of the electric field 5-f(n- z s kyb15l:ilcy.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.ds1, y8/ixzi a What is the electric field 6.0 cm from /iayx1di8z, s the center of the sphere?