State the law of conservatio mi)tbynm * i)y:p4p-ln of electric charge.

  Is it possible for two negatac2*; vgeg+, r*dkslyive charges to attract each other?

  Is it possible for a positive and a no/ 5xj aly l201yq3fw p*ex0art:3twuegative charge to attract each other?

  A glass rod is rubbed with a piece ofwv5,e3w+dw du silk. During the process the glass rod acquires a posi,d w ed+u3wv5wtive charge and the silk

  A proton carries a

  The model of the atorf w(p k 0:yjso.36pksm shows a

  A neutral atom always hau che qw)5 v+tpd6;)uy:vcks8;y-m hus

  An atom has more elew;(b 92rwd y 0ogebhk/ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are re5sk ppjx sd6qn96jb 5*ferrspj 6qnp 5bj9kx*5 ds6ed to as

  Materials in which the electrons are bound vezj+ rz,zn3 c7qry loosely to the nuclei and can move about qzzn+7,rjzc3 freely within the material are referred to as

  A negatively charged o0 6;exk a grb)djocn)otfi0:: e qh((wkv*m4rod is brought near one end of an uncharged metal bar. Thejkd v)o e; of*0:gh0c(qnweo4:)6x( atribkm end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are zyerhhspvla0 sr(2g/c3hx *93(z.lhplaced near each other on an insulated table. Sphere B is briefly 2xh0zss/zr v3lycl* ( . hh( g39ehpratouched with a wire that is grounded. Which statement is correct?

  How can a negatively cha vu3tsdjvj;8 7nr-9 vnrged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched w 4zew0 mi jq:8;sq-kfaith a positively charged gfm z8k;ew0qijq -:a 4slass rod. The electroscope

  An originally neutral electroscope is groun;va8y eeb/lb;4zwc k 6ded briefly while a positively charged glass rod is held near it. After the glassb;6ae 8/z;c 4ywlek bv rod is removed, the electroscope

  A positive object touches a0xl9 ft k x;su: l-wbdot*44rj)hxp s6 neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscopefpht9ls4t s w;k)r6xd4x- b0x *j: oul, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.*a( s:qnuji(39msw wb 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, bu3ji: b* sq(w9sa wumn(t 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 5y m/ly eq-(qdconstant $k$, which appears in Coulomb's law?

  Two charged objects armr 17nn +k(lfo k,0hcbe separated by a distance d. The first charge is larger in magnitude than the seco+ 0 fnbml7nr(khk ,oc1nd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eac hk +x5xbncg96b -ds2eh other on an insulated table. Which statem b2n +d -sh69bcxke5gxent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. y(+ dv:nf, br1vybc:i If the charges on both objects vrb1d cny, +y (ivb:f:are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attwl;v (5 cd,b: bmq/swvrv9*upractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcessv drvw, 5 / *mv(pcbw;q9bu:l?

  Two charged objects attract each other with a force F. What happens to the 7jget-* 8hil ngk(+gur q.l /mforce 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 gih8l m7 njg(.-e*+qutkgr/lforce is now equal to

  An electron and a proton ar)c nlkmf*c j,0ikar3c,;fb)ee71of te separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pla0il3cacb, e)n r c,fk k;jem*ft)o71fced next to the first electron?

  An electron and a proton are su .yxd aid19tx7tj b3*w04j kkeparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electronat73wj* djbudy14 9t ki x.x0k is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What 9 -vhexariy: :happens to the siz vhaxr-9yi:e :e of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placf,dpwkk7k w ze59t /knfxsr ,mt2q02.yj,7kaed at 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 other three corners of the square. What is the ek kd/wwmfzp. tsr270,2a9xkj, 7n5k t,yq fkmagnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed a6 nqusd xzb(txw395t,3,ofm o.; iou it the centroid of an equilateral 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 thos zuw.39qtxof;o 3mn,t ,6 b(xiu d5ie 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 c,ni (p0jn.n7s3cp lpa vector?

  At twice the distance from a point charge, the strength ofh)c)6csl v5 yw the electric field

  Is it possible to have a zero electric field vald 2w*ae+u+jlzue between a negative and positive charge along the line joining +u*aej lzdw2+the two charges?

  Is it possible to have a zero electric field vpcrf x 0*104lnd1ed kkalue between two positive charges along the line joining the tw* rn0kldpk 04cxef1d 1o charges?

  Electric field lines near psitive point charrtggoadumx - q;2upy6 :k;ft9 c6dn(2ges

  The electric field shown m2fto lk; b5 ;:aycnoer;.v4x

  Can electric field linesxpyzg2c3udfv 42fs:) intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifouy f 7vb;0glhb,5t0ofrm electric field. Give a statement concerning the electric field in the blo7,y bt0 bhfvf5glu;0ock's interior.

  If a solid metal sphere and a hollow metal51/ 7pr*7 /ojegmi ftuxgfsn+ sphere of equal diameters are each given the same charge, the electric field (E) mi pf 5g7x*t1+7/jgen imros/ ufdway between the center and the surface is

  A cubic block of aluminum rests on a wooden t nm g0-mnw 4zsmc,yr.4d(q-lc qz-:msable in a region where a uniform electric field is directed straight -zmgl. nns4 csm,c(ywq-r0:z mm4-q dupward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near zssv9g eh(3 ,van electric charge

  A positive point charge is enclosed in a hollow metallic spherk66 jnt5gbaz 3e that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly ab 6kz3t5gbnaj6ove the hollow sphere has

State three properties of conductors in static e+mi 7fon tgyta);0t*y --i* iifgv+f wquilibrium.

State Gauss's law.

  The charge carried by one electron is i+sui ; mnc22u$e = -1.6 \times 10^{-19} \; C$. 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. H)tqd.thu.haizo 0y 0* ow many more protons than electrons does this 0h.h.d) to 0t yiu*aqzpiece of plastic have?

  What is the charge on 1l ,m3b6y 5)6ax:avaxhuvgg *s kg of protons?

  An atomic nucleus hac ) mbypg;blq(kv ,/vl),f)iccsr 3*bs a charge 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 2.0 and ( l478(v3gdqjvy v(f.tnnae e-4.0 mC, respectively.(n4 ev.ylvgan8evjd f(q( 3t7 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 betwe5.tj .y5cllu2,eu 1 xtnj.ll pen them is 1.0 N. What is the magnitude of tt5puy.2l.c ,eull5t nl.1 jxj he second charge?

  Two 1.0-C charges have a force between them of 1.0 oh pkv2*.mv)n z k(4mbN. How far apart are they?

  The force between a n nz6k.vyhgbsi,i-i5g 898f d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2. j jlj3*r/xnoz 2,s/tn0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between xt 23n j *srz,joj/nl/them?

  Three identical point charges of 2.0 ir arel4iidpc). i* 7w/ f+)fkmC 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 electre il)7pwk.rc4/iffir*) i+daostatic force which acts on the charge at the origin?

  Three point charges are placed onjd cvj irw1+(3 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 the 100 cm mark. What are the magnitude and direction of thj vidr+1 j3(wce electrostatic force which acts on the charge at the origin?

  Three point charges are located at th mgu e vu.(g(xk4v,kq8e 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. Whg84(. ( v,vumx kguqkeat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cent rxpc7x; weo38er of a square, and a second point charge of -Q is placed at the upper-left corner. It is xr;3 xw 8cepo7observed 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 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);nc; h b:h-e o1++b5z e-a1c end8lolpi Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0e-:h1ehn+8-c apcd5lzb olon1;+ ei b). What is the magnitude of the 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); Q3 = 5.0 q9lfu ,cc4z3t5x yxk/ nC is at (0, 0). What is the directionx/f4yq t, cz9u5lkc 3x of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertop nkgd69ieh m46 n51y ljips574.w .m jnuoz+ices of an equilateral trianglkn n9i p16.yng4ms+i6owj uplhz5j.5e mo47de which measures 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 +Q and +4Q, which are separated by 3.0 m. At what poisws d6vlk 6xy05, gb4unt, on a line between the two charges, wo0y,6s4 lvs b6kdwu5gxuld 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 +9.0-C charge is at x = 4.0 m. W.i/p o; ppb z.gd5v5vir88tcb5v f, jzhere on the x-axis can a third charge be placed so the net 5fr/;pv 5zvjd8i.pvc.8ibpgbz ,5o tforce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whereq9 nnn xy)wdm0 05k b/o9jdm d6+9xaha can a third positive charge +q be plach d50dmn)bjdo9w +x9k/axa6qnnm09 y ed so that the force on it is zero?

  A copper penny has a mass o xdfre44uo*xi vyhbq 99)8f6of 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 of gravity 7cmriw u;u; um/cn) 8mby the attraction of a fixed pro;ucm7i/;8cmrn um wu )ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fr g3e:.p*px fi oifuhedy*gphi. q+03)om a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apfi*. 3i.h:x ph pdug0e3 *)fgqyoei+p art until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a u,w z:poy hlu14f9f1s charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?wf pl9 y1uof,u1 hz4:s

  What are the magnitude and direction of the electric field at a disvs;co(k 1w+ ,la *ouxmtance of 1.50 m from a 50.0-nC chaw 1s+ l(uvxo*mc,;akorge?

  A 5.0-C charge is 10 yi1fz1 fm+ ;j cil-,pjm from a small test charge. What is the magnitude of the electric f,fc zjjflym1p+1 i;i-ield at the location of the test charge?

  A 5.0-C charge is 10 m fri/ f5i 1ts1afhom a small test charge. What is the direction of the el1f1s/t5hiif a ectric field?

  A 5.0-C charge is 10 m from a small test charge. What2iso*)rcz,oair3kao i1( +t1le5w ei is the magnitude of the forcr)*ai+ 13ir(kiwe co152 z le,sooitae experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eael8b2j:vo-*ova::xy4st 4mu iqiu 2b ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway2t o 4u8vq4:y eju2lasmbxiob*i:- v: between the two charges?

  A 5.0-mC charge is placed a82 qbkg* alzr1t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is th21gqr bk*l 8aze electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and1fev( p4;nm-li piha0q3io g2: bnk bfr* d3s; a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining thh mrvks1n f;in bei;pld*g:(pa2ob33i4 0 fq-e two charges is the electric field zero?

  Two point charges of +3.0 (*of9 inc ps37jmbbseec8 p5v5(g 2 kvmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the mf 9 b3 vbc2*7ppec5(smnv(ge 58jik soagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 l )tb8 bxv:sp+m. The last corner is occupied by bsp8 :tx)b+ vla -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges r/3e4mirpyf+5( k;)xx ivr ax are placed at the corners of the 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 i+ve; p5axx4rf3myk)ix r( r /electric field at the square's center?

  A force of 10 N acts onf 9nib08zlzq xkh2ce;.k c60o a charge of 5.0 mC when it is placed in a uniform electric fi2i8k9oq 6fhlk .c;cez0 nbz x0eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 m ui*trpinj *4 e/f.*brp7.pxaC 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 iny*a 4cq+om -fz an electric field of 6000 N/C pointing downward. Wh-*of a+czqm y4at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00utox9h0s /ce9yek4( c nC. The ball is placed inside a uniform electric field, a(4 99ec ktx/seo0ch yund 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(sj7n gllh5: 58x giqkp-g4t o mC. What is the magnitude of the elect: tsg8 hggo xlp(5-75ljnqi4 kric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatl ote snlwbekf n00i.0+nd2rs*19pc) is the electric field 6.0 .si0pf* lon e n1bldkn900s)tc w2r+ecm from the center of the sphere?