State the law of conservation of electric chargeu hg2jp:pa+s,gu0 -e 8vbvk l7xznk,-.

  Is it possible for two negative charges tos0l+fi 9l*pd s attract each other?

  Is it possible for a positive and a negatb-:06 lm.kqhe0mdhww ive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassfg: kw5gf57hx rod acquires5gfk75 h: gfwx a positive charge and the silk

  A proton carries a

  The model of the atom showjobjp6yu5: )zhuk-zax2 iw;yr 71 v.ns a

  A neutral atom alwaya0 2p8n2spk nhs has

  An atom has more electrons than protons. The atom a e9yl5*m6c ubis

  Materials in which the electrons are bound very tightly to the nuclei ;k87cys u.wgn are referred .87cgku;ywsn to as

  Materials in which the electrons are bound very loosely to the nuclei08q)knl/x izoe y8 ui4 and can move abo0in io/xykq )88el uz4ut freely within the material are referred to as

  A negatively charged rod m dc uexy )9msi.j3v 8a7v(t/nis brought near one end of an uncharged metal bar. The end of the 9v8.)auy (i7 emc/tmsndxvj3metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge,kkjrh*gh km70*a +xyb d +yx0, and sphere B is neutral. They are placed near each other on an k0bhxgj +k, r*y+h0ady *7xkminsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge anx a3*mel b/b0hk33tvgo h 5m0f electroscope positively?

  An originally neutral ) a 7bt2mph0f tv0 g9bpmue64yelectroscope is briefly touched with a positively charged glass rod. The electro ae 4mtfbbvg72 p)9ht0y0ump6scope

  An originally neutral elesqu lb*n.fny3.:klzx+ )t c31l ,qh vcctroscope is grounded briefly while a positively charged glass rod is held near it. After thez,.u3 sl:nq 1 )q txlcbf3ln+* cy.vkh glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep n64;i.bl ox7,f2 lplxgrsj1qarate. Then a negative objeclx;7jx ps46 l.qf,o1ligbn2 rt is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutp:ndq+l tce612u telvq /qy:5 ral 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 roly q:etu l/nqv p5ed +ql21t6:cls 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 t5mxzihb blh -vj+l8q h:iq 8lztf37k5y5l3h(he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T7 oc3edn8,knv he first charge is larger in magnitude than the secon8 ode,3vcn7kn d charge.

  Sphere A carries a net charge and sphere B is neutral. Thejq i)grt,fn9 7y are placed near each other on an insulated table. Which tg79i,q) jnf rstatement best describes the electrostatic force between them?

  Two charged objects attract each other with a *pc7e 0igsrou s *7h v(sn6y)tcertain force. If the charges on both objects are c)o6sr s7n *p(its0uv*7hgyedoubled with no change in separation, the force between them

  Two charges are separated by a distance d and exerblr w:vbq) guvbwm 35ei5:,/j t mutual attractive forces of F on each other. If the charges are separated by a distance ofb5uvmbe:5w:j3)lb/,q r gv iw d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happt,*n(jz0adycvi* b g,fv(c 80l0yqpwens 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 onea b *q0*cpcg0fd ,wznjliy0(v8t(vy, -fourth its original value? The force is now equal to

  An electron and a proton are separated by aakb7 7e -cs:po/(sr (hy9bggp 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 gbk/ab7pgorse :p-9s 7 (yc(h first electron?

  An electron and a proton are separated by a distance odjv *lmlj-d)h t(,5kgq/v ht+bxwy:;f 1.0 m. What happens to the magnitudd khdvl-g)tt ql wx,b*v(yj5/m;j +: he of the 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 1.0 m. What jrw.;nkviig*nh0/ d9happens to the size of the force on the proton if the electron is moved 0.50 m closer tw jknngidr9*;h/ i0v .o the proton?

  A point charge of +Q is placed 9j, .1bwrpdrmat 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's center. Now, identical charges of -Q are placed at the otherjp m1.,9rwbrd 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 ce oqk3l 0 g xh23m7vdm*iiwjt)(ntroid of an equilateral triangle. When a second charge of +Q is placed at one of thetxii *o jhv0qlm )k(3w3g2 md7 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 third charge of +Q placed at one of the other vertices?

  Which of the following is not a veuuywc fp zk.5rw*(k03)apf/fctor?

  At twice the distance ni pnzi;/2v79u;n 7m (ab ga l2r1alxlfrom a point charge, the strength of the electric field

  Is it possible to have a zero electri/t q1i o.4ax;mz (xua(lu u6tfc field value between a negative and positive charge along the line jxmf;/(u1 tuloat a4i(.u q xz6oining the two charges?

  Is it possible to have a zero electric field value between twou usv60t+g +ge,f -ysb positive charges along the line jot+sugf0s6 ,ygub+e -vining the two charges?

  Electric field lines near psitive point charge-u6(2(mcqsiwm tg(p es

  The electric field shownuwsfwy;1n1 5b f69 zfqo 0c0uq

  Can electric field lines ig,w88zs d6+ygzw6b+r hss5 aantersect in free space?

  A solid block of metal in electrostatic equilibrn1; /6gifqpnw ium is placed in a uniform electric field. Give a statement concerning qgf pw i;1n/6nthe electric field in the block's interior.

  If a solid metal sphere and a g6q , oax/r x49y7kpeyhollow metal sphere of equal diameters are each given the same charge, the electric fie697ykg xq/,4rpao xyeld (E) midway between the center and the surface is

  A cubic block of aluminum rd di0./7mo tvfests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge f70 dvit.m/d oon the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chj0zyx )k,8j agovv5 gjc o)3x;arge

  A positive point charge is enclosed in a hollow metallic sphere that is gr9,wu8awrij b5 ounded. A8 ai5,u9bjrww s compared to 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 equilr;5q.8x )kmq d9vkgb7ii fw u5ibrium.

State Gauss's law.

  The charge carried by one ele;d2 tj.s5utu -uytl+ hctron 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 thaxvj490 ydnyk2 n electrons does this piece of plas9y4n2 kyjx0vdtic have?

  What is the charge on 1 kk 5w ,s2pwq9ofg of protons?

  An atomic nucleus has a char 8h4e7xn 9 bx2erb7birge 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 values of,5u p+crc-v:u 44)5 rukdpi-zbyusay 2.0 and -4.0 mC, ruu5rpcvs,ri4ba ukcyu y-5+ )4:-dzp espectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m ff1fm+b ) rey/vehn h-qm306qf8qx sj+ rom a second charge, and the force between them is 1.0 N. What is the magnitude of the second cf - ne+vq f10)+3srhqyj6/hmqxb8f emharge?

  Two 1.0-C charges have a force between the2 w()xhnr;eo,0pbiiem of 1.0 N. How far apart are they?

  The force between a m7) utb as/7x.+lflm,*ypowb) r6 ljl$30 \; mC$ 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 f4 qxlx+fwv,j(jj9 2z2*ar mhv8 g-mfworce. If they are moved to a new separxj8,jxv- f2qf+ hw (w2a4m rvlgz m9j*ation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plmko7) sxf7 n:k,7ucem7b;c n oaced 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 emk)b:eook7fn, ;sx u77mnc 7clectrostatic 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 plfywtb:gdcbx( 1) l+yz i-0s.ek1v mv ;aced at the bygywvcet z md 0(l;s1x1v. +fik-b:)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 force which acts on the charge at the origin?

  Three point charges are located at the followi:8vf+gebe vdu*u5 )ndw bs-s ;ng positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00*8vduf v)w s-us ede;n5bg :+b 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 plan 2m,fn jbrju3*en9,tocne7 (ced 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 positivec,n oubn7nej,(2nf9et jmr* 3 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 = 5.0dlc1.cbh ri8 *x hez*( nC is at (0, 0). What is the magnitude of the net force on the 5.0 (8hcbrlec. z1 i*x*hdnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.s m2i74ukuw3 s10 m); Q3 = 5.0 nC is at (0, 0). 734iuwms suk2 What is the direction of the net force on the 5.0 nC charge?

  Three identical chargest: /h 6s+s cmq0ku85tsku fx:v of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatiu6kmu+q0 x sk:h:5stfs tcv8/ c force which acts on any one of the charges?

  Consider point charges of +Q andd ig,y -n8o;zg 9a(ceh +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, e(-o,9cin yd g g8ahz;would it be possible 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.) +e hgvmp*;r51h av1l(cxz- qzirt5d 0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f5exl)*q (hizmgrd1ar+v;h zpvc -t 5 1orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. ozga( ef/+2zy6 ol6hfs3u(it 3qga t/ Where can a third positsl /+26oeq(igufgft(a3 h /o3zt za y6ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total os 1h s9wc/q,zkdnb .m2f $4.0 \times 10^{12} \; electrons$ 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 thgz4)7eef tmb;is2* -xvey1iqe attraction of a fixed proton some distance above it. How far above the electron is thb1i yeq )m sgfzxite;e *2-7v4e proton?

  Two 0.20-g metal spheres are hung frozp9apxti q vp70;.g3yd6-h pxm a common point by nonconducting threads which are 30 cm long. Both araxdq;p 6t-y0 z79phpiv3. xgp e 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 magnitude of tha b2,qth 332l9nevh +acd9zfze electric field at a distance of 1.0 m from thea 3+h h2a3 tdefbqz 29ncl,v9z nucleus?

  What are the magnitude and direction of the electric field a +,tf*cd *5 4iutvlo,se6epp yt a distance of 1.50 m from a 50.0-nC fp+tut*56,dls,i voeep *4yccharge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitur n7i)(-pa cjab4,sic/uvq ,hde of the electric field at the location of the test chargebcis 7hvi a ,q(u /c)jp-an4,r?

  A 5.0-C charge is 10 m froyj ujvml5,7 v5rq6xwtt8b 7a +m a small test charge. What is the direction of the electr 7l 58t,vjq ubxrm6ytw57j av+ic field?

  A 5.0-C charge is 10 m from a small test chaqial3pgq/m sw( zf57b/8cj /srge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargef 7lgjq(szqs /8c3am5p//biw?

  Two point charges each have a valu * )z9+p7yls+ sphkgpr9u.z vue of 3.0 C and are separated by a distance of 4.0 m. Whav9gr p)* z p+97h.puyszs+lukt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mete dp1jaw7:b s3yr stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30sbdw j1p3:y 7a cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick(:s yn*6l;,k d 9u7b+lyaxvr 4n vslcx and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the tw:nllcrx,a sv yblv* y7;d9ns + (x6u4ko charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 kwx kx4ly66/kand x = 0.20 m. What is the magnitude of the electrix wk4 /6kx6yklc field at the point midway between them?

  Three 3.0 mC charges are at the three corner z, vgakd/:m3es of a square of side 0.50 m. The last co/3 avgemk,dz: rner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.toqte v53(u ::d /uibx0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 t3ib:uvxt/ :eqd o(5umC 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 placed yckdlj0n5) t(s3cnb 6in a uniform electric field. What is the magnitude of this electric nc 5n3l)kdb s tj(c6y0field?

  A particle with a charge of 4.0 mC has a mass of +r.s oi+v* icefr zmdq2qk4.w :5(+t1jevn xi $5.0 \times 10^{-3} \; kg$. 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 field oflkx*,ecg v8/vy 7:g yb 6000 N/C pointing downward. What charge must be placed on k7ylyvx c8/:*b gveg,the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00l b)ql :ac7 il;g8x*tt nC. The ball is placed inside a uniform electric field,ta8 l*):litxgl ;c7qb and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 dmgxw6 01vckkv3psoiw. d -; /cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's .61 v3-okgxd;kvs0cpiw w/dm surface?

  A metal sphere of radiv yt+1 rg:4e)nu4prlwdtq ;o/us 2.0 cm carries a charge of 3.0 mC. What is the electric fieldl;t vyd t grp4nq1owur :e/4)+ 6.0 cm from the center of the sphere?