State the law of conservation of elemg 7 g czicv1jb(h3p8fxk hsvm8/9c5 +ctric charge.

  Is it possible for two negative charges to attra)0xqi gko1nv,9 btust8rt.-j vov-/n ct each other?

  Is it possible for a positi87 -f x*dwdclhve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass b8xi+1oe9x 4y1d;jq ji yuo b5rod acquires a posb8141+9 yijxby;jdqox5i oe uitive charge and the silk

  A proton carries a

  The model of the atom shoam ub5d8g2c1x-dvj5/rvw8 nr ws a

  A neutral atom always hasn(v8 har; 0 gf8iwfh:k-b6lf x

  An atom has more electrons7vf+jez h;pzj4 2:jdquv8sftoy t 1/+ than protons. The atom is

  Materials in which the electrons are bound very tightly to the n:p8dpbjw2;d ye i 68apw7s;a muclei are referred todp8b dsa;62j7a8py i ep:;wmw as

  Materials in which the electrons are bound very loosely to the nuz-tdctodvxc6v- r.7 , clei and can move about freely within the material are.zd v6d cx-vtrt7c,- o referred to as

  A negatively charged rod is brought near one end of an unc.+0v64y*n q b4sg rnmugv2vhg harged metal bar. Thes4y* vv.qmug r2+gg b6n0 v4nh end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B imhid nuiwlj.5 +6s,6xs neutral. They are placed near each other on an insulated table. Sphere B is briefly touchel uw,sixm65ji+6.nh dd with a wire that is grounded. Which statement is correct?

  How can a negatively charg;t/(9 eei8poucc2 h i4tk l0eved rod charge an electroscope positively?

  An originally neutral electroscope is brirjcy1 kd:e 79wefly touched with a positively charged glass rod. The electr9:cj ryek71dw oscope

  An originally neutral electroscope is grounded briefly while a posi1aazhdfu: -hdc9:4u mtively charged glass rod is held near it. After the glass rod dh:1fc ua- z49auh:dmis removed, the electroscope

  A positive object touches a neutral electroscoper2e7z+nb4szh 6 /tzqs, and the leaves separate. Then a negative object isr4szn26zb/tqs7h ze+ brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ijc 3pjlsi2 .u+s placed on an insulated table. A neutral metallic ball rolls straight to c.uj3 is+l2pjward 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 is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant jv2; d6thoe //lc l5cytf .m3s$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargef-x6rylux5ec:ps, j- is larger in magnitude than the seconcs,le px6-rx5-:y u jfd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed oxrlhoy5s)zi ( s)3i8 bz- 3manear each other on an insulated table. Which statemenz3(ol)b8ih somr - six)zy3a5t best describes the electrostatic force between them?

  Two charged objects attract g4 a1 : cnqqyd,zh:v(ra4qi6heach other with a certain force. If the charges on both objects are doubled with no change i:6an(aq 1c4 v4hyghzq: d,rqin separation, the force between them

  Two charges are separated by yr)k hx0p1u,p 9(pkn6zx+dgma distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcnz)kpgp1 h6 rxykx(,d9m +p0 ues?

  Two charged objects attract eac)t:bp rw,u8727t qlta o.uvgch 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 tcbtu .)7,2wl7ag 8q: tvr puois reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated bcbr3t4sdxd8u briipv 8u* * tt7-q-7xy a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elui8bst ir7*7dbx-xd 3t8q v ur4tpc-*ectron is placed next to the first electron?

  An electron and a proton arck zdk7+8wr-k e separated 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 protozk d+kk8r7c-wn?

  An electron and a proton are separated by a d k.,tb/yarvl5istance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?5, ky.l/atrbv

  A point charge of +Q is placed a/ xg3duf: w4exsh6l0ktni( r,t 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 squ60lx(fr,e un:k gs iw3h 4t/dxare. 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 triangl+bq)d (uk k ;tkye3qca2 l09vwe. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts b a2kq(ycluw 0k3dqk;e )vt9+ 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 v,vttxs s(3m(r d, 8wkkbb*0ckector?

  At twice the distance from a point c.zp7 v:,nexxxfzx7or /lo 0d6 harge, the strength of the electric field

  Is it possible to have a zero el mwv/3byu;,m* :/ q -p 6rkyngxe3axskectric field value between a negative and positive charge along the line;*n-y:gmbae x3/k6,yvxwp/kms ru3q joining the two charges?

  Is it possible to have a zero electric fiel3/xoca yj mu,u-z (cn.d value between two positive charges aloauc3,m.zc (u/y jx-onng the line joining the two charges?

  Electric field lines near psitive point ck 8)oa:o0l)weh9d ufb20utb j harges

  The electric field sho,*c8,v f fl/1/ lp dedkjqwvel v5a98hwn

  Can electric field ll9ip mrn)el0haso64g a;n;m 9lf- *dy ines intersect in free space?

  A solid block of metal in eleg 8)q ol6)eyx6cjhj ds+x ,t-rctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thjd8)6hl-,6 xxcegsqroj )ty+ e block's interior.

  If a solid metal sphere and a hollow metal sphere o8yjb-gre smsgdv).c83;)c jof equal diameters are each given the same charge, the electric field (E) mi8j ycr)e.mb)3jd 8ossgv-gc ;dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a /.f;y kp va4y82 3bmj)t;kp dedcd7 giregion where a uniform electric field is direea8f3ctdk mgi4 ;y.pyjp2d;)/d7b v k cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ap/l) 7d (-n(xeivmoj xmg*86t u:rpznear an electric charge

  A positive point charge is encloshoy/6qvm6oolv e99gaw a(7 x* ed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a7vx eoy/*aa69 9gvwq 6 h(loom point directly above the hollow sphere has

State three properties of,b n ryg:j.-wz conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electr7,m byq.hksk7.v e 2,zsobto6on 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 c5x 9ubimjqf0 dm(4g (uharge of +2.00 mC. How many more protons than electrd (4jb qmf( g5iuxu90mons does this piece of plastic have?

  What is the charge on 1 kg of protons ayi; 8/m.iq 5wm;qufw; bilj*?

  An atomic nucleus has a cnuffx,zz me)lf tb(sn59; j(9harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sdb:lnsge-4t.( hdhzn2o5 icocm37 m 4 eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcectc3hd lmm .4o5hbz (ins: eg4d-o7n2 between them?

  A 1.0-C charge is 15 m from a second charge, ox*t0 7+fva.vj,vyj sj:0 vgpdfo)j8 and the force between them is 1.0 N. What is the magnitude of the sjj )f08 sg+oovvxv0 ya7.:tpj fjdv,*econd charge?

  Two 1.0-C charges have a force beth ifj)mu: 8o4uvg1,vpween them of 1.0 N. How far apart are they?

  The force between a s oe;1oyoewk- +alv9j,:n rr8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially vmq(62 (v)ci0n5pgxd yfl f4k 2.0 cm apart, experience a 1.0-N force. If they are moved t0di 2(p ffk (n)4xgcyv6 qlm5vo 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-axis. The lq3o3f ifimrp(fc.;7 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 on the chaf(3 7qm. pc;ifrl oif3rge at the origin?

  Three point charges are placed on thenwn/v:z4m 3l(kzf) um 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 the electrostml4 k( m/zw3):un vfznatic force which acts on the charge at the origin?

  Three point charges are located at th9ssgoz 6+a 4dze 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 the force on9so 4zgsd+za6 the 3.00-mC charge?

  A point charge of +Q is place gt9yrt7gb6 gqu1;o z65 hkhg*d 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 167hur ;gzgt t qk65go9hby*gplaced 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 = 5.0 nC is at0 hzlvxs xfb 3 ey-17bygiq2:5 (0, 0). What is the magni y5hv0- bx e3yf2qxl: g1bs7zitude 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 m1imble:nw 1ms+ y+nc8c+8dd y); Q3 = 5.0 nC is at (n1d1i+cmc8yds 8 ywme++:lnb0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterahig*s6r bfhxgyc;- 70l triangle which measures 30 cm on a side. What is the magnitude of the electrostaticr y ighf7xcg h-bs60*; force which acts on any one of the charges?

  Consider point charges of /feh( 9b yddp++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 chaey+ b h(/dfp9drge 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 ch)knnfsus 2 xgc2hz9yvw:m,0 zr7)y k:arge is at x = 4.0 m. Where on the x-axiyxs zfu:hz2) ng7 kmynk:s,vrc092)ws can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge u 84 itegsdv9l8ls8u; -q is placed at x = 2a. Where can a third positive chargllt8dv u8 i89s;4seu ge +q be placed so that the force on it is zero?

  A copper penny has a mass of5cbvc r;:nt y -2qk 4ixehlh49 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 ude38 xjiu 1qf x):ii(pp against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prot:i u3di xe iq)8fx1jp(on?

  Two 0.20-g metal spheres are hung from a common point by nonconductih,uh-7 p d)siru opew,4ry) ,rng threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untieyphrh u7d)r-o 4,p),sw r,uil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge op12x+ .sw;rmm)ty5wyqom zw 0f +40e. What is the magnitude of the electric fiel ;12wm s.rz+m)ymo0t pxqwwy 5d at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thendi d74/i)r0)kkl jke electric field at a distance of 1.50 m fr ) ikk/i4djne7d0rk)lom a 50.0-nC charge?

  A 5.0-C charge is 10ebta38.0 qps2qa7 kxx m from a small test charge. What is the magnitude of the electric field at the location of x2tbe0ksaq.aqx 7 83p the test charge?

  A 5.0-C charge is 10 m from a small test charge. What fbx )/dtuu5)jlzx- r-+8yye bis the direction of the elecue /yy8x 5+-du bb-f )tzxjlr)tric field?

  A 5.0-C charge is 10 m from a small test charge. What is 67dfynk0t yq9 6k(tqjg a1/ imthe magnitude of the force experienced by a 1.0 nC charge placed at thet69 1q 0tya6qygdmnk f( jk/7i location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by+efn2-(y usxk a distance of 4.0 m. What is the electric field at a point midway between the two chargk yn f2(ex+s-ues?

  A 5.0-mC charge is placed at the i b82q 6ud*evp 5mq3z(mfpew00 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field f6wmeq0u zpqd*8 2bmep ( iv53at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mete7/9 -n r0z mrg0 hq4(zxqo vfi3rkypt2r 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 eqvf 203yx4ni97ztq/p-mr rhok( 0g zrlectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0cazo;) h-cvo; and x = 0.20 m. What is the magnitude of the electric fhcz;oc a;-vo) ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50xfb,sd1 y(u4m m. The last corner is occub1mfx4(d uys, pied 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 the +ly f8dkhyb9n4* s er9corners of the square 9hb*d l 8eks n4y9y+rfas 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 n(e jc92*ydeum vd 3./ ,3 k8iauknhhta charge of 5.0 mC when it is placed in a uniform electric field. What is cejkuin 3m28d v* .t/3,deyhkuh9( na the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mas*y)eaf g4l 5h:n* zrews 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 da5)6leq 9z ljof 6000 N/C pointing downward. What charge must be lq )6dezj l5a9placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is place 09yzkrdpr-b )d inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude anp9 k0rr)-ydzb d direction of the electric field?

  A metal sphere of radius 10 cm carrof)qhxvra5(5 k6p e, ties a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the ko5)q tvfh 56a(,xpre sphere's surface?

  A metal sphere of radius y,kpx)n jj+st -vt 54f2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the ce+k- ftn tjy)x4vsjp5 ,nter of the sphere?