State the law of conservatlqlsif.y k3w;d( s6) wion of electric charge.

  Is it possible for two npgp2lk 06t ry+u7 yfg8egative charges to attract each other?

  Is it possible for a positive and a negative chavmfs 8+wn/,targe to attract each other?

  A glass rod is rubbed with a piece of silk. During thro fyj pl rgg.vru:r ehc.2sebk) zb2.*)4 t8,e process the glass rod acquirbr pzl8f 4r.ges* y2g,e) :hbr .co.2)tkujvres a positive charge and the silk

  A proton carries a

  The model of the atom shols 2ysjpkmj w.ba:j s/9k.e,8;* szwmws a

  A neutral atom always ham; o*fl( iol zqb,4wtq a,d//ks

  An atom has more electrons than protons. The atom (( 0 qxecqhjx9is

  Materials in which the electrod,x:rvk.k v+ bns are bound very tightly to the nuclei are referred tkb x:vd. ,+vrko as

  Materials in which the electrons are bound very loosely to the nuc4 y6la gi(y c fki;6rcsuu508klei and can move aifu s;y8yc 6c l540gk(6kuira bout freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. y b5o :6o4.if:4e/0saejlowgy r wlob f2t6h: The end of the metal bar farthest fro:s6 fjreigey wf24ol.l:bhtw4 o:/ay bo 560om the charged rod will be charged

  Sphere A carries a net positive* cp/ ix uzy/hpu y*e+v-dc nk-jy,h.8 charge, and sphere B is neutral. They are placed near hc evp-d-*//ci*pyjhnzyu+kx. 8 uy, each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cupbjw 4;9a (1 c8axp:x:c 4j*tazmqdl harged rod charge an electroscope positively?

  An originally neutral electroscoe,s (q1la:y scpe is briefly touched with a positively charged glass rod. Thscls,e: 1(a yqe electroscope

  An originally neutral ele fw,(a 6br1byxa,4vfk ex4 340nvrmm uctroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removrf ua6n4 x4b4,wmb ,0 mx(vkf3e ayr1ved, the electroscope

  A positive object touches a neutral electroscope, and the lo-bmc2hc y3vd lk89 0aeaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens md83yav-c9k lob c 02hto the leaves?

  A large negatively charged object is placed on an insulated table. A n +baw/ e3h/ m7ytadk,qeutral 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 / b7,yatm qda+whk/ 3eis the final charge on each ball?

  Charge is

  What are the units of the Coulomb consta6 1*c,,d 3t::1whho;bikz nawwgilq hnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger 0e ;b6iego.h cupx7h*in ma.cbh ;euo6ghx0e7i p*gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nsbpgpqxj sane97(-6g/ q8(loear each other on an insulated table.l-qsgp9xbse8p n(oq6 jg/( a7 Which statement best describes the electrostatic force between them?

  Two charged objects attract each other 8k qsvrr;0l;e,gp9q ewith a certain force. If the charges on both objects are doubled wis pql9;v ,eer;gkqr80 th no change in separation, the force between them

  Two charges are sepad6 oa dvzv(s72*i -agdrated by a distance d and exert mutual attractive forces of F on vod d*6a7d (siz-vag 2each 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 rl3ubfmw t86,2mb t5 oamvb ,4force F. What happens to the force between them if one charge is doubled, the other charge is tr, um,4 l3t2bm6for 5a8btvmbw ipled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protonz jp 3i*q */f8xda9zwu6z0azy are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second eleq8/ uz60ajz i yd* xp*9z3zawfctron is placed next to the first electron?

  An electron and a proton are svr ukc3j4c:+c g7gxr8gm t-t 6eparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton7cv cm4+6jutgg:c krgtrx 8 -3?

  An electron and a proton are separated by a distance of 1.0 m. Whatl6.o(glw9 ;f-ibl 4 fgb yte1c happens to the size of the force on the proton if the electron is mob4-lecl(.f lb9gfowg i1ty6; ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poincf oxthv1y-c (),f4 pat charge of -Q is placed at one of the square's corners, it i th, 4 o-vx)fpcyac(1fs 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 k+5+v vrywvo(2 .trx lthe centroid of an equilateral triangle. When a second charge of +y+.rwvv+t2 oklv 5( rxQ 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 other vertices?

  Which of the following is not a ve/3;w/*irhpdll0fa04p gv) nlst uq. dctor?

  At twice the distance from a point charge, the strength od2t/otsca- sie( mp:t l2 2sm)f the electric field

  Is it possible to have a zerfd+f s/h o/)sko electric field value between a negative and positive charge along th/ df+ks ho/)fse line joining the two charges?

  Is it possible to have a zero electric field value between two positive char,f b,7rusadg1o r xt crn/x*08oxxh/8ges along the line j8r/asdf x*x tohc/0xn,7u,b8x1o r rgoining the two charges?

  Electric field lines neapg-d1zx pfun+h1b(.jz y a3m,yp8zo-r psitive point charges

  The electric field shfq atgb-vici*02gt 50 own

  Can electric field lines intersect in free2 ov7 b:(omw4z +hwmkwa +6hmn space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele-i-b*h/z u5o5 hnqpm2nanda ) 6 yav)dctric field. Give a statement concerning the electric field in thevy -d2uh n5) q* 6p5n)zadha m-o/inab block's interior.

  If a solid metal sphere4p + mo+fp(oag: 7xvbt and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between tht pbfo p4 +v:+7gxo(mae center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifou;0i qow )zq0;-lpxoo rm electric field is directed xl;iwou-oqo)pzq00; straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostaxfz/ s ov4t ,klct:3/etic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundw;8,edgi 5dh6*vll x:em.z: fi d ,gdaed. As compared to the case without the hollow sphere, the electric field at a point direcixlvdd58 e ;:,zg:ldd*6fiah .egw m,tly above the hollow sphere has

State three properties of conductors in static equilibriu6fim4d9 y/a v+gzjih*ox .(y tm.

State Gauss's law.

  The charge carried by one electron is w3,k, : iy 4gss4xgtli$e = -1.6 \times 10^{-19} \; C$. 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 proton0 zt ),hcn1q.py1l1qs* dorks s than electrons does this piece o*1h dq,0n)tsc o krz. 1lyqp1sf plastic have?

  What is the charge on 1 kg of 83fu3smv d+h j 5.rph c8.zvyoprotons?

  An atomic nucleus has a charge of( l*w(biea:3 mk t7utt $+40e$. 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.md1p6xl.ajpa l1mp*9 0 and -4.0 mC, respe1a1 lm6p .*paxjm pdl9ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and z1 +ml)42fmpo mv79x stc*i 52xdvqqithe force between them is 1.0 N. What is the magnitude of the second char*mm 2+qmqx9sti 7 14)5liocxpvzvf2d ge?

  Two 1.0-C charges have a force between theun+ t-5o3d g8mh:+fytkeq8 9xuy b d/gm of 1.0 N. How far apart are they?

  The force between a gc u0prgy(xwz.2a4/p $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inis.)m7myqes8y3 o 1.f hhy vv8vtially 2.0 cm apart, experience a 1.0-N force. If they are moved tv3.1fms7yyh y 8vs)e.8oqv hmo a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-a98 afm u5:*mq p qooc*ws)y5 ndi4jj(exis. 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 electrostati ipa( 9mdeu45 m*s8w:jconj )yq*q5foc force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge t;srn7sw +ca 4of +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 electrostas4a7 +s crnwt;tic force which acts on the charge at the origin?

  Three point charges are located at theuo6cj-iw 3ke + 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. What is the magnitude of tui6o eck+ w3-jhe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of aguza ,b6c h 7n1(xd 2a;u0zpez 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 ab(xgzah17a0e;pzdnzu 6 2,uc t 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, 0n .rw*z)yg7 yps, :y*dobw z :)uwqz:t); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of zpy:oy ::*z*nwwq zu,gy)bs r7 wt.)d the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = 0r( waz3o o7r:7fw: he*plknb-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 5.0 nC chargezrraw 7o :0pb(3newlfk7* :ho?

  Three identical charges of 3.0 mC are placed at the verulh u:1h)(dcnf,ol1 5jsqvck3hl/ b. tices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whicd,(b):ql 1hv n/uo fl ch5ujk 3.1chslh acts on any one of the charges?

  Consider point charges ofdx)a 1bd-ouy6 gys (2o +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 chxdo d 26ab(u-syo1g) yarge 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 xfh /dqrm*60+h 67 o hlhclhc/v = 4.0 m. Where on the x-axis can a third charge be placed sohmh6qhh0 l6f/+ rov/7 h cld*c the net force on it is zero?

  Charge +2q is placed at the origin *ln6,94n2:te g h5aln olok ooand charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it i4ookn 2:96e,olag*lnno tl5hs zero?

  A copper penny has a mass of 3.0 g. u8uana3gxai5jz7dc7f .r ( l;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 attracti9l6 i5a(ug pxiqku;g6 on of a fixed proton some distance above it. How 66u 9a(pux ;ql gig5ikfar above the electron is the proton?

  Two 0.20-g metal spheres are hung f it. urv5k7)jorom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart uv5).j7 truikontil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e.9tob 6e1b e4bf What is the magnitude of the electric field at a distance of 1.0to bfeb49b6 e1 m from the nucleus?

  What are the magnitude and direction of the electric 0z h izh 194afar8d3pjfield at a distance of 1.50 m from a 50.0-f ap13z9ihhdj0 az84 rnC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofk *f1h+b bv gkan0g55w the electric field at thhnk*fgv 0+bw5agb15k e location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ak)gh,u0p 0 bi -6dxxbof the electric field6bpb ,hx0da0x-i ) kug?

  A 5.0-C charge is 10 m from a small test charge. What is the 4c 5fsr1fyh *zmagnitude of the force experienced by a 1.0 nC charge placed at the r4 5cyffz h*1slocation of the test charge?

  Two point charges eachjbp+m3jw48xy )1608 lstckhpct :l e o have a value of 3.0 C and are separated by a distance of xy08ct8spjo)ll13 :twhce p +4j6bmk4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark 0 qt;pf4rcqz6x+s(tdox.ll3x y 2 y;sof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the e x xspq2q;rsdco+y 36y .z;0lltf (xt4lectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark o1qv wj37s 4xfrf 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 chas 134rqj7fv xwrges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2xwjh;tlcco68,pi3*d+e -l pd 0 m. What is the magnite*-xjhipc6d3w ,tco pd8 ll+;ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornc u/.wf/ 1pnbjers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the u1n bwpf/. /cjcenter of the square.

  Consider a square which is 1.0 auey)cc14*l xm on a side. Charges are placed at the corners of the square as follows: 1ux*y)ec4 l ca +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 unifh6lwdbn.1l 1v8g9xnyw 6 gg.*3y ecsnorm electric field. What is the magnitude of this electric fiel w dn1l6nb 6x9ggysl3 1v*g .h8yecwn.d?

  A particle with a chaqhxe 8lp8ng zhd*z89 4rge of 4.0 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 is placed in an electric field of 6000 N/Chhjo ndyc1q5-u.hfz+wf6( 0u pointing6ho-wyj5. n d0quzuh (+ffc1 h downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The banf7z zbo6wkc)n(o6,jdl*1 f jll is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fo d617 cz jnf)6ozw,klbf*nj(ield?

  A metal sphere of radius 10 cm carries a charge of + f868gkfkw7kt2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'swt8kfkg8k 7f6 surface?

  A metal sphere of radius 2.0 cm carries a charge j6iqsx9p( ork1** thd of 3.0 mC. What is the electric field 6.0 cm from thd*9s6 *1 qo rk(ipjxthe center of the sphere?