State the law of conservation of eluv b1d9s3yv-)wrtk 0-tc)yr 27rg igf ectric charge.

  Is it possible for two negative charges to attract each other?mnve*m ;9h v)nm8g d:a

  Is it possible for a positive and a negative charge to ag5nccck0 27ty 7i/qm2+q hk-8ri qqjtttract each other?

  A glass rod is rubbed with a piece of silk. Duribc:gkyoo f/1pg 5t,;klgep s,81r9blng the process the glass rod acquires a positive charge a5 9/ gs;1k l, ,8rpooc1ft:ggkybelpbnd the silk

  A proton carries a

  The model of the atom svh fw+ytk8p-m xc(+wwk4hnsot *h/66hows a

  A neutral atom always h; he jvliwp4(2as

  An atom has more electrons than,;8 ;jlu(6 vxdzqignjm gj *+n protons. The atom is

  Materials in which the electrons are bound very tightly to ktj.q 0ki,/n5ko w n8dthe nuclei are referred to 5 k8/ wk,jk0.qont dinas

  Materials in which the electrons are bound very loose,.h nw5gcn+siz lcy :,ly to the nuclei and can move about freelcz hl n,s+5cwn,gi:y.y within the material are referred to as

  A negatively charged rod is brought near c.e6zhi -a o p3c( w(coqv.8agone end of an uncharged metal bar. The end of the metal bar 6a cg o.pcz.qi a3ce-h(ov (8wfarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and z:m, phr1 o1 lrzw*4bbsphere B is neutral. They are placed near each other on an insulated table. Spherhw :ml4br*r, ozz 1pb1e B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an 9l9 v:i;b9tq/q0vsvcamk jr+ xxq:e3electroscope positively?

  An originally neutral electroscope is p*e ayo0+r,p,pmcqv jr2g90 y briefly touched with a positively charged glass roy* vo yp0+pg 9 mp0raj2r,cq,ed. The electroscope

  An originally neutral electroscope is grounded briefly while a positively sl-;;g8l/ff5 buip wzm,j .racharged glass rod is held near it. l zupb/5;imf;l8jw-. fg sa ,rAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves see 2gor( lkfklll1nf w)3281ifparate. Then a negative object is brflg1fle) r2no2 lfk( 8 lwi3k1ought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulaftu4frz phnzeg2l c:5x/q*uyo 93t. (ted table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A s5cn.o/rtu f(*t 2 fegp 9:3yxuqzl hz4econd 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 the final charge on each ball?

  Charge is

  What are the units of the Coulomb constano6pz0 +1zjxc n.mw h 8zr(4jcat $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is liiiwnonc +3grx6wp : .,vl9z6arger in manv.i cl:rw i6g 63p+z ,xiwon9gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ek9 fq69vnp013cwh5 dumf2ezq ach other on an insulated table1q0mwczp 6 uh2nvqf399 df5k e. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wipm o/wkc8y2ozjs *j;1th a certain force. If the charges on both objects are doubzpw *8oc mj ;2s1y/jokled with no change in separation, the force between them

  Two charges are separated by a distaqgf4 /.mi i1xfnce d and exert mutual attractive forces of F on each other. If the cha4xi / .m1gfqifrges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a foievfp 2z 0ppb0.uu,/ arce F. What happens to the force between them if one charge is doubled, the other charge is tri2.pp0fuau/pz, bev 0ipled, 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 proton are separated by a distance of 1.0 m. What happzp2dmzk /u *;xens to the magnitude of the */2 ;zpxkzu dmforce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to wq4lc0*7vd5oat b 0r +hp+yw/r ixkr8 the magnitude of the force on the first electron if a second electron is placed next dtw7ixc8k0rqy 4*w0l roa/b hv p++r5to the proton?

  An electron and a proton are separated by a distance of 1.cikuywy0hu84c7- u0 w 0 m. What happens to the4y7c- 8 w0i kchu0uuwy size 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 a4w2 8fv.1;q, -vfiq+mt wfsdl8ruamjt 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 tl 1fu+8rmqjv.wf vm-qa, 8 sf;i24 wdcenter. 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 equilateral triar6hhqra v48;kngle. 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 plac h6 kh8rqav;4red at one of the other vertices?

  Which of the following (xbp 8oodwyu t - zd6p; .-7gj3pfxx)xis not a vector?

  At twice the distance from a point cj)ux- a; e. r.vcywi;aharge, the strength of the electric field

  Is it possible to have a zero electric field value between a negab ztxp 88t-xnl+fetxb 5c )i ,3a/-qh2lsv/ostive and positive chargxvs tb 8sqef txbpt5x-3c)/hz2- + ,ao/ln8l ie along the line joining the two charges?

  Is it possible to have a zero electric field value between two positz-*q k (4zubwaive charges along the line joining the two charges?a u q-(bzk*w4z

  Electric field lines near psc-cb n-8 gucb-itive point charges

  The electric field show2;ruatwt03g 7 hiwvb2 n

  Can electric field lxavyw,cud -9 )ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is panqsa- xw prn:m/(+0tlaced in a uniform electric field. Give a statement concerning the electriswpmnxrq t n-a:a/(0 +c field in the block's interior.

  If a solid metal sphere2mo;x*lh ci4v yi0:+el,fdbz pp el07 and a hollow metal sphere of equal diameters are each given the same charge, t 0ofp7,* hy42lli+clv 0; :ebzdepimxhe electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woode yys).fik3c (nn table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfac(s k.c)inf3 yye?

  If a conductor is in elec6aa bvqim+p 83trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallhzn dk6bam, n)mq ji689+6luu ic sphere that is grounded. As compared to the case without the hollow sphere, th)9jmh ,anz6nu ld+6 6i8mubqke electric field at a point directly above the hollow sphere has

State three properties of conductors in stt9:nv)m x*cx1 1imj iqatic equilibrium.

State Gauss's law.

  The charge carried by one electron isk69 rr 8bc,msq $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net cha6 plj8c ))pspkrge of +2.00 mC. How many more protons than electrons does this piece of plas8s 6 plkj)pcp)tic have?

  What is the charge on 1 kg of protoyu3q s5wyhft wn4:;qp/3 6zuay0trl+ns?

  An atomic nucleus has a charge oh d7/frg7qwo-+t /mnrf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have0 yzdi:l; fjx s/mao69 charge values of 2.0 and -4.0 mC, res6/xim z ;fald0sjyo: 9pectively. 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 between twv. o/nbf7r,yhem is 1.0 N. What is the magnib/,v.7ny ofwrtude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.sc+b y bw1+v /d9;qmrw How far apart are they?

  The force between a n (o 0j.u6psck6 cmpomfx175:c rb )vd$30 \; mC$ 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 fow9g ull rx1 z9mo,nbd czgqm7al,)7-,rce. If they are moved to a w,mc9 glzo-gl r7,) ql xadub917,mznnew 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-axis. mz *8+tsd5v9xjk i)z nThe first charge is at the origin, the second to the right at x = 50 cm, and the third is at the n+zs*dmzij )5tkv 89x100 cm mark. What are the magnitude and direction of the electrostatic 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 placed at f l2ny 9x-/buhthe origin, -2.0 lubyx-hn/ f9 2m 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 a8peb iug9n5o6 t the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.bgne985ipu o6 00 mC at x = 0; Q3 = -5.00 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 placed at the center of a 2 i3o:y- /icb11gq;kqpsl ujhsquare, and a second point charge of -Q is placed at the upper-leqyj: i2ib-c1/ ;1ol pguhk3sq ft 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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3epw-3q 4a0gt g0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mag qwg3e4p0t ag-nitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,g i-icab yk c -uq*w1m.a ;.1yru,m:zt 0); Q2 = -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 -1m abqycy*ii;.crmwuzt ,gauk 1 .:-charge?

  Three identical charges of 3.r-i.(ipf/c o 4n yx.enz +ifq9uu f/7v0 mC are placed at the vertices of an equilateral triangley-v. 9 /x ifc/7r.eqo zn(fp4u+finui 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.x2*cl (0a7rzmmwfb 3a+ 5 v uc; lr703mvitodf0 m. At what point, on a line between the two charges, would it be possible to place r l xvozduvm3f7lr *0+f 0;ata5m(7mc2 c3 bwia 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 cu tb pv*tl+t/ 6*cl-pwharge is at x = 4.0 m. Where on the x-aputv6*+tl*- tlbcp / wxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed aj*y kpdxv2v)1u28eo6en x0jx t the origin and charge -q is placed at x = 2a. Where can a third positive jkx2 e*802xvuexpo61vdj )yn charge +q be placed so that the force on it is zero?

  A copper penny has a masx eflnnl6 e8a 2p*h-rpra*n+ *s 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 of gravity by the attraction of a fixe3 24 e1*fodch6 qcoklzd proton some distance abovhd o*6e23ozkc14qfcl e it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fromfdh45rdapspct2td) f kgqi+/ u*25 j. a common point by nonconducting threads which are 30 cm long. Both are gij+g) pd5p 4icrsk ft* a f2h5./utd2dqven 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 3l nx8roje,h.0krprm kl69i7 of the electric field at a opxrhmknr903l 67.jk8, ei rl distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fw hxwy:/qkj1.ield at a distance of 1.50 m:xwqj /.ywh1 k from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e (rqtdh.-m*-jhi ;qmrla *g((avsz)alectric field at the location of the ;aj.mh)a**q hdltqms( -g-r(a i(vz rtest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ocr8k b)/d2qxla (:nd /uc gk.zqy ic44f the electric b.ck/( 4nr4u:2 cdy)xdgli/ zck 8qqafield?

  A 5.0-C charge is 10 m from a small(ozr2.1 jkjm08u yw 8rpcx g7u4d *vua test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge? 0uo*kw(cra881ymp.v24 xj zgdu jru 7

  Two point charges each have a value of 3.0 C and are separate2jzrfmz*cb3 o26e urgnfy03)j* qc 9jd by a distance of 4.0 m. Whatzgo0 *2byjjfr9f2cer j)3qz3 u m*6nc 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 meter ps4eg. 5tbbccz 8kh 1-stick and a -4.0 mC charge is placed at the szg4bhtpceb815. -c k 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm i :-74f txudoh bx2u 4ocju2n2mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j4-2i o4dxnf x utbuhc27jo2u:oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mCq(a8 )mhj trnmx8 cm8fd0 3lz) are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the p8qx mh 0ram88 mc3 fzntj)(ld)oint midway between them?

  Three 3.0 mC charges are at the three cornersvb -z-9qu7tka of a square of side 0.50 m. The last corner is occupib k9zvat-q7u- ed by a -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 are placed at th3* 2 (e ixwop5z rye9kxb;igv*e 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 electric field at the sq;b (xkpozvr9* w3gi2x 5i*eye uare's center?

  A force of 10 N acts on a charge of 5.0 mC when x5 e0bdkppbs (l+,jd:it is placed in a uniform electric field. What is the magnitude of this elbx ( b5slpej:dk0,p +dectric field?

  A particle with a charge of 4.0 mC has a wyvgv)77+ wx gmass 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 f 1bndhb) t.6d.xee- f(dba by0ield of 6000 N/C pointing downward. What charge must be placed on the ball for it to be s.0(-ed.b e6ba)df hdxn ybtb1uspended?

  A foam ball of mass 0/bd(j0aki tu u/)x0iwg 7e(ec.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direc 0(uwj akb7gd i (uiec/ex)t/0tion of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t/2acpj u ymz;g /0s4bmhe magnitude of the electric field 5.; u/4sz2ym0gmj a bcp/0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3. hry6h:-sea lwr:jj3 9xz0)wp0 mC. What is the electric field 6.0 cm hjj z0x:a-rhw sye)3r:9lwp6 from the center of the sphere?