State the law of conservation of electric chargdbnew 7h1vwm47uguq9hqez7 7 lu0p9 0 e.

  Is it possible for two neg+h1eu;w z+ v3vxo4jqqative charges to attract each other?

  Is it possible for a positive and a negative charge to attrammps rf 1ir63:ct each other?

  A glass rod is rubbed with a piece of silk. During dka 7 p5.:sxzxthe process the glass rod acquires a positive charge an zs5dkpxa:7x.d the silk

  A proton carries a

  The model of the atom shows ankzh,7,e egrv b74:ta

  A neutral atom always hasklw(0,xeq)e o(n ua6v

  An atom has more electrons than protons. The a1sam5 ) dp glbtdyo u+h.8g9d4tom is

  Materials in which the electrons are bound very tightly to thp0dg2r.az xy0e nuclei are referredd0ypxzg 0.r 2a to as

  Materials in which the electrons are bound very loosely to the nucleiuznn p /jz :-qhd:jv(3 and can move about freely within the material are referred to a n 3(qj-njzzv/::dpuhs

  A negatively charged rod is brought nz zj,g;cl6xp -+w u8nlear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b;gu+- ,zjpllx 6 zcwn8e charged

  Sphere A carries a net positive charge, wa( mpl5b 4qm.:gqmy7and sphere B is neutral. They are placed near each other on an insulated tm qm:7 5wyb4.q(a lmpgable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e9qo (cxhj6ms+27x /q*cg bfnilectroscope positively?

  An originally neutral eleca 5y48*g1obmer1u mgltroscope is briefly touched with a positively charged glassy151m rl8gb*ame 4oug rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelyvv+-d /ne2y ta charged glass rod is held+-yntev/ 2 vad near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separve,kkp0 2xpq,r3 1kpq ate. Then a negative object is brought near the electroscope, but does not touch it. Whar2kev ,k x0qpp1 3kq,pt happens to the leaves?

  A large negatively charged object is placed on an insulated table. .i1o 94e 3bikbws u)loA 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 th o. k)e41ol9b3bwuiise final charge on each ball?

  Charge is

  What are the units of the Coul 1 xw(gwkq+,z6aveoycd t:5v)omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f9o9yuh r:l 6ihirst charge is larger in magnitude th6i :y 9oru9hlhan the second charge.

  Sphere A carries a net chara,p5pue;:x- qdugxu5ge and sphere B is neutral. They are placed near each other on an insulated table. Which statement be,5;5x: aqd-eppuguxust describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. f3x )/imbn v/o,u a;beca9:fc If the charges on both objects are doubled with no change inf3 ;n)fuavc9m/cxaoi/b , eb: separation, the force between them

  Two charges are separated by a distance d and hi ).o47r ,dgs9kxwmiexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are thxsdoi)g i4 .k 7,rw9mhe new mutual forces?

  Two charged objects attract each ot4qe cx3l:-yq yher with a force F. What happens to the force between 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 equxq-4 e ly3c:yqal to

  An electron and a proton are h7(2jlm 6g5mm ,g nqzzk4s3hxseparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fq2xnh sk g6zgm h3,5l z(mj47mirst electron?

  An electron and a proton are sepub; lo63: 7)npgz fzsbarated by a distance of 1.0 m. What happens to the magnitude of the force z: 3gbls u )pf6b;nz7oon the first electron if a second electron is placed next to the proton?

  An electron and a proton hut + y+w27rdvare separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protonw2rtv+u+h y7d?

  A point charge of +Q is pla..h+ri 7pfuie ced at the center of a square. When a second point charge of -Q is placed at one of the square's corners,7rhi pe.fiu .+ 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 placed at the centroid of an elfp p wg4,bf4hi(r d70quilateral 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 of the force that acts on the center charge due to a thirp74f, (wrd g0bhpfli4d charge of +Q placed at one of the other vertices?

  Which of the following kb8i :mzhw+ 0by 6asd;is not a vector?

  At twice the distance from a point charge, the strength of 13t ayzmt+zkds kp;8, the electric field

  Is it possible to have a zero electric field value betwz uy(id )35gwwha xy.ggn/;s0rv6r)eeen a negative and positive charge along the line0idrv5n;/(ryhww6e gg)s zya.3g)xu joining the two charges?

  Is it possible to have a zero electric field vayj sar *b/ot5 f3jyz67lue between two positive charges along the line joining the two7yrf3tsbyj 6/oa 5z *j charges?

  Electric field lines near psitive box:bm i ox40pwl9elxq/31:a point charges

  The electric field shown wtk)gkgj98 a(0ybe1zan5 wg1sr* x h6

  Can electric field lines intersect in free 0rdzlp yugs (9zdd0;3space?

  A solid block of metal in electrostatic equilibrium is placed lum2e-+er bn,in a uniform electric field. Givem,lrub-2n e e+ a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a :onn, a/*,5j zje8ub e1hd jtnuegpf.z51 m-c hollow metal sphere of equal diameters are each given the same charge, the electric ztnn 8,ea bpu1jd m5cgojn1u-.fje*hz /,:5efield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform hk(u). 9k t)quw mxl6ielectricu9wxlh)( kkm6i.)qu t field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eleci u-o1f1z 1qwsxcxu0(tric charge

  A positive point charge is enclosed in a hollow metallic sphere thl*s:zh*qpv rbwg0b8)at is grounded. As compared to the case without the hollow sphere, the electric field lgv *)wrbqz8*sh0p b:at a point directly above the hollow sphere has

State three properties of conductors in static ew:r-mui7)t zbt c-g1squilibrium.

State Gauss's law.

  The charge carried by one electrgazg)f8i (2zc on 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(ykc (lut ltox0p+b 6: many more protons than electrons does this piece of plastic havxu6(o(:+0p yc ktltl be?

  What is the charge on 1 k oo0cco g/7dcu4zob/p6 8nv) ohy; 8hug of protons?

  An atomic nucleus has62azi8x kgiv l v-wxpa(c2f*- a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated dhl*ybjtg1 +. nbcyyn/ u0g.fyaj19-iiq;0j by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magni0jl9d .ifyyu0 btg .j-q/a h;yn+y1cbig1j * ntude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 15p8m6n k5nxbvc bi3e N. Whb8 i3ce 61kmn vp5n5bxat is the magnitude of the second charge?

  Two 1.0-C charges havlm3l6vh(6o2 .iafcf ea 1;dqle a force between them of 1.0 N. How far apart are they?

  The force between a j6hsfmk+i( -37cio *yd 3ddcg $30 \; mC$ 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 fo s,lsu0tuls/g ;2542ks rtb+s ytd a(yrce. If they are moved to a new separatiys0s2rd ssbs atl/5t u guk y,+4tl(2;on 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 vi m0 7. ekm6bhtb;m)gfirst 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 electrostatic force wtgh m m;k)b m70e6ivb.hich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A 2b3q qb(c,rr-pz5azl5*si au charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, labqr3,(z-2zpi5r5a sb uq*c 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 posixb0d oj y:yacx5h4.,etions: 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 magnit,e:oab 0c dx y.45jyhxude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secondx1e flb :8rgx/.asklu l (43lyb+n5hc point charge of -Q is placed at the upper-left corner. It is observed that an elel1s yb3 n4xg llh lbrfa8(ek/:5c+u. xctrostatic 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 = 5.0 nC -;3a* qwbsgh)5 yc sfvis at (0, 0). What is the magnitude g3 5*qyfwh)svc a-;sbof the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 d4x h9x*ma;ei g2vr*n.fjbd- = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.xmfi*2x9 ehndr jav.bg;4d*- 0 nC charge?

  Three identical charges of 3+ 9,vbs ;bkyz)0 grf 2ekno/gy.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnnbs+yo) b y,;kgk02gf vz/ r9eitude of the electrostatic force which acts on any one of the charges?

  Consider point chargep(4b tbf9a v(es of +Q 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 charge of -Q such that the electrb(f (e 4p9avtbostatic 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. Wher7rnwn b:f1+l re on the x-axis can a third charge be placed so the net force on it rwfr: 7n +1bnlis zero?

  Charge +2q is placed at the origin and charge -q is p 14ael 7dr+z 9:ktv5xie c)lyflaced at x = 2a. Where can a third positive charge +q 5 kax d)i:lv+re7cezyf41l9tbe placed so that the force on it is zero?

  A copper penny has a mo+ cvay7rwn; s 5:kwh,j 9nd;xass 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 x:mh69rhg u 5uszu /8jf, 7kh a*qkklkuyz+()of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto+xmf76hhj kq*u :) hurzykak k,z5 9gsu8 lu(/n?

  Two 0.20-g metal spheres are hung from a common io3.2eqx 7uggpoint by nonconducting threads which are 30 cm long. Bo xioq 7gu3e2g.th 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 charge of +40e. What is the magnitw wokk6ma;/h* ude of the electric fio6a;/* hwwkmk eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction o232fi5k sm bbeygjf-4uo3 yg 5f the electric field at a distance of 1.50 m from a 50.0-nC chargjisfky3g4u25f2gey ob 3m 5b- e?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thei 07wt r3 at)x+s.lg l rqk3tjz57ygv1 electric field at the location wjrxlt 3yr7gvkz315 t0s .l+ai )g7qt of the test charge?

  A 5.0-C charge is 10 m from a smallm jkbn x3 :q2c1rqfgd 1cku*(3 test charge. What is the direction of the electric fi kq:d c (gx1rckq3uf*123b jmneld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit :y:o x1nk gymzl24tld7ecy57tr*w 4wude of the force experienc75lnw:r l7oe xym:kd1wz4gytc* y2 4ted by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value +ssu grsz5tm/7jt9mjb0 (:t mof 3.0 C and are separated by a distance of 4.0 m. What is the electric bzts 0ut gssm9jmm 5j(:r+t7/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.ot7z6eqzt j6,cbb 9i charge is placed at the 50 cm mark. What is the e9 6btez 7,t6.icjbzqolectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0n(fm.dtq -7 pg81rv - ti(tmxg mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field r8nf(-1gp( t m mgx7q.tivdt-zero?

  Two point charges of +3.0 mC and -7../,qrwv n km,ik y,;by0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mid q;,yny.r, kkbvmi/ ,wway between them?

  Three 3.0 mC charges are at tfp80.fba:f x8x *oagr he three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tg r x fxfa:pof*b8a0.8he electric field at the center of the square.

  Consider a square whickt22helz8ba h5(j vl;h is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,ebt85 ;2 j(2hllz vahk 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 placed inlo(**jm1b fn f a uniform electri l*o(f1nf *mbjc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has3 l /u5r 7 0c6f(b2sy)zpid de86vj;ja rjcnfs 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 mass8 kg/yxvak4dmtos/+b4g 5s3p 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendbmk v35g/8gdt+o kxa/4 4ps ysed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The blpzmccmt).0 l1mtfdc.j u6 +4all is placed inside a uniform electric .f)1jl p 4zct0mccm dt.+u6lmfield, 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 charge of +2.0 mC. Whabq3)u uajp/1d8y(khb)1 d,yf0l umokt is the magnitude of the electric field 5., hy18m/qyd(ok ub da3puu )bflj)k0 10 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrie wkf)x:kyl-.us a charge of 3.0 mC. What is the electric field 6.0 cm fro:kwkl)x- . ufym the center of the sphere?