State the law of conservation of ,*- ()hp,2k+af f xmu5czbapvweh-e+ nl qqd 9electric charge.

  Is it possible for two negative cha-,uggi a q9lngp;5h/ mrges to attract each other?

  Is it possible for a positive and a negative charge to au4igc7-qzrzo 0/z( fqttract each other?

  A glass rod is rubbed with a piece of silk.7- /nhgvs.:ki ihs;cm During the process the glass rod acquires-7;:s nvih mhci .s/kg a positive charge and the silk

  A proton carries a

  The model of the atom sh:doj8s ./o rbbows a

  A neutral atom alwayg6vc1.n sly.ks has

  An atom has more electrons than protons. The atom 3h;au+-likt ois

  Materials in which the elecps02imf7 + euutrons are bound very tightly to the nuclei are referr7p0 uefumi +s2ed to as

  Materials in which the electrons are bound very loosely ; la,5viaxw3ito the nuclei and can move about fx a3w ai,5vl;ireely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged my2vuru7c psa9-s:( l a+mf qe/etal bar. The end of the metal bar farthest from the charge7(2f+ ay/9suvap er:slu -cmqd rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac8- 7cn l9v0 rzides8qwed near each other on an sc-8vw 0n 9l7 izdqr8einsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosuw.)*vb* zhbdpi8f, e cope positively?

  An originally neutral electroscope is briefly ti7f8c+ tkxvnajn5i* 9ouched with a positively charged glass rod. The electroscopiij5k+cxanf89*7 nv te

  An originally neutral electrosca/ou+v pjli/z0 nmb61ope is grounded briefly while a positively charged glass rod is held near itzou vl/mni ap1b+ j0/6. After the glass rod is removed, the electroscope

  A positive object touc)xt 1hn9yaz/qhes a neutral electroscope, and the leaves separate. Then a negativex 9hny1tz) a/q object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object jypzst6f//d ):g8 dyais placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the pad:jd/ a yzp8y)f/6gs tth 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 thu( s 8y6wj0rdpdqqv )l5p3 usz2c n9s*e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separag y 6e.z0mjqv*ted by a distance d. The first charge is larger in magni e.v*zgy 0jmq6tude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ez okc2d6 e84ne+zn 7sdach other on an insulated table. Which statement best describesoez682dn7 4c+ske d zn the electrostatic force between them?

  Two charged objects al7a2fc4ea+ quc 16ryzjc2 u/ yttract each other with a certain force. If the charges on both objecu24+ya z7rcjlu/acqcfy6e21ts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv va92bde(u lv1e forces of F on each oau(vve bl2 19dther. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract,c5mcx j+sa*s each other 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 s,cm5s*x cja+ one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of su+-67zu jafd 1.0 m. What happens to the magni+ s6j uua7-dfztude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a protoh pp/c3euh1a+n are separated by a distance of 1.0 m. What happens to the magnit+h1 pca h3ep/uude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proto 3*z., z w*qgoy,vqycsn are separated by a distance of 1.0 m. What happens to the sq*z vgysw. *qc o3z,y,ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squar; yg,g h/8ixhee. 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 othgg eh/ ;ihyx,8er 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 ny v f*4zsbs0)c wb/0bplaced at 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 the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the othewfzb /y0 )scbvb4n*0s r vertices?

  Which of the following is not a vector?m rojv v+79of(

  At twice the distanceo, cu8evb+3 ly from a point charge, the strength of the electric field

  Is it possible to have a zero electric field valub3wmom(4o/r0 jqj o s3e between a negative and positive cha 4 /os3qwr3o0 (mjmjobrge along the line joining the two charges?

  Is it possible to ha2 hl9h.dg-xduve a zero electric field value between two positive charges along the line joini9ul2dh -gx .dhng the two charges?

  Electric field lines near( l; ldanzw5sj9kez) : psitive point charges

  The electric field shs 7+dgl**s8,, jphu3oue h wgwown

  Can electric field lines interx;mixsv + ;tj.sect in free space?

  A solid block of metal in electrostatic equili8 l2kuw54crl wbrium is placed in a uniform electric flr8 uwk5l42cw ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal z:objt1;t w2f+w3ipbdiameters are each given the sbi t wbz1; 3wp+:2tfjoame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg 4 r+o-8v 2rxnupm mrbzlcn+nf93f(;gion where a uniform electric field is directed straight upward. What can be said concerning trx z-n c(n r9vpgb3fm +8lum4f2+;onrhe charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chr: hsft.ola75r k*5eg arge

  A positive point chagyvsq /y (.g.n dlirfiz7bn -sf8+o-p9eh*-crge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direct8 .ni+ d7 i/*z bhv fsy-lfocnypge-sg.(r 9q-ly above the hollow sphere has

State three properties 4 ;* y0avc/i 2ilj. b7cnakfndof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electh)7kmi a4 /7/mfz csmaron 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 thano1vmiu8 bjlp2c6 br)0 electrons does this piece of plasticlj2 o)6iu b10mcrvp8b have?

  What is the charge on 1 .ue z/ ppi3a4 (hzccc6kg of protons?

  An atomic nucleus has smed 3q;rex4mx*ir p ;)ne)l7a 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 of2( yurnujdy+- 2.0 and -4.0 mC, resprn+2yu(y-d ju ectively. 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 betw*le8p,mopb 9 deen them is 1.0 N. Wh*do,pbl m98ep at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0.jc-:a su :uq, xtk6mb N. How far apart are they?

  The force between a hpluqw vn1ck4 o)8*y3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initjn 6wpm*kg,, buaz x;7ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electr7wkuaj , zb6;gx* n,pmic force between them?

  Three identical point charges of 2.0 mC are placed qmvxxu)pi( ,g kxb 4ip12pm,v .n02xnon 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 electrostatic force which acts op x1vx 402 ivgmxk)(qnm,.bp2i,nux pn the charge at the origin?

  Three point charges are placed on the x-axis. Aq3v ag dhrs /o*8w4wq1-hp;:o k sifo. 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 the electrostatic force which acts o:s oq h8*h.i;3opwk/ -w 1dgrvqafs4on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at 1d ,x ycmphu94ls4ut6 x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 slym 9 4h4ptc,xud6 1umC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placwa mh3 fa2(r-ped 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 the center charge if a third charge of -Q is placedarmp fh-3a(2w at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.04aeypp- ju klhyq s-kb0v+ v(5ny/5b7 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on 7(+klbv kp5/-abvqj 4yesny- y0hup5the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0w 6 nl3ccc wvv+ hlir253w:y62 yhv4x vlp:-bb nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directn:l h vi c-vw4px 52lhyb2 6+byvcvc3w36rwl :ion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of anct3; p;l;-5m 6qg vrtlbxon)n equilateral triangle which measures 30 cm)v mb6 xqntt3l oln;p;;-r5gc 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 mkure:w19 mc)h p+b; lw.a/byvgv3u6u4 xryv+. At what point, on a line between the two charges, wouldkx 6buylb r pu+wcwymvva94 )h;/: 1v.ur+3ge 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 oriszp*p5kt(1erkpd2+6m et8wf gin and a +9.0-C charge is at x = 4.0 m. Where on th 6 5pp+te*zd21 fwk(8 rekmptse x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is p, tzclr1(fcpe3 c), mglaced at x = 2a. Where can a third positive charge +q be plac)pmcz c,le 3g tfcr1(,ed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o )r: of+usecp -:iaf(je27odpdzy0i( gt4/ipf $4.0 \times 10^{12} \; electrons$ 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 s7/h 9i 3uarrigzv;fju461agn5a jr / by the attraction of a fixed proton some distance above it. How farr5aafin;zj467rjsr3av9i u g u /h1/ g above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common po9j; whb-,k8qd gwcrxrx2l f2- int by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatiqr jxdlc82;b9gf,w -- 2whrk xc 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 magnid lv+8 scm3pe5tude of the electric field at a distance c5+lems8vpd3 of 1.0 m from the nucleus?

  What are the magnitude and dia s :zvgz7al/u6n.w1frection of the electric field at a distance of 1.50 m from a 50.0-nC chasv a7zf:/alz61 .nwugrge?

  A 5.0-C charge is 10 m from a small test charge. What is the ma,p in w 4hozb-8,-7tsrj cswv6,-vyukgnitude of the electric field at t4j7 o-scv rykv-nb-w6zi,,u wt 8p ,shhe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc1jt0tb yp -5option of the elect1b 0-ptypj 5otric field?

  A 5.0-C charge is 10 m from kpn( 14bg ;jb :xzrcs,s b1eu/a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatiorkupxbb1e gbsj1,s;c4 n( / z:n of the test charge?

  Two point charges each have a value of 3.0 s,fqfsxg ;ny 04fwn5n.w;n i5 C and are separated by a distance of 4.0 m. What in,5xqgifn 0n4s;nfw5 .f;ysws 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 meter stick ansv,cx(u9hu 6 a),w(k wu09 io3 rpyktxd a -4.0 mC charge is placed at,9wc3v()ia ruu9s0kwoxx(p , htk6y u the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is place;be h2:ap 4ndbd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zendb4h2a;epb :ro?

  Two point charges of +3.0 mC oi (9 84prxrovt,+0bl/idh4 bsm5vsqand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the mago4srs8i5mp(d hq 9 ,bbrvv/ lo+ti 0x4nitude 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 wx ffmc0 e),csx2ka:z om0p 5v1m*b* h0.50 m. The last corner is occupied by a -3.0 mC charg5)he acfb wv1mmp sm *of02k0:cx xz,*e. Find the electric field at the center of the square.

  Consider a square which is 1.y*9q2mq:wxll, . f2kv 1+yz kdvtch:h0 m on a side. Charges are placed at the corners of the square ash2 yvkzw+l fxmyqq1: k9.d,t :cv lh2* 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 is placed in a uniform efx o*fi g7r;x: u/qbdys::i8u lectric field. What is the magnitude of this elec:/id7x f:ug y fi sb*uoqr:8x;tric field?

  A particle with a charge of 4.xty ,khscu+( em 7yo8p61as j-xi(p m70 mC 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 ishy8 eki;x:3cp 1z9* gr7p sxyj placed in an electric field of 6000 N/C pointing downward. What charpk:pz83g1i rsejh* x;x9y 7cyge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 a,qzk( ysa/)nhp)1r q g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, an1 )zy ,p/kahq (an)qrsd is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries1y,;psp(bv l2lyp1sn n m s:pqsz/7l4 a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromy n;pvls 7(lbn :z 1ps2p1q ,mlpy4/ss the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.gli )+(yjd. mc33ozkk What is the electric field 6.0 cm from the center of thzo) 3jdlkcgk3 (y.mi+e sphere?