State the law of conservation of electric 4s q6y xq9zz8w+*gjk-eoiu0q+cfv .l charge.

  Is it possible for two negativwbjq p i m7*041e ot7m*)vi*plfn b8bie charges to attract each other?

  Is it possible for a poknpzy0u ;-uqk3 wli5(sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rotamx2xol00u+/d ):qnq hmp8td acquires a positlhm2oau:0t/ )xd8pt+ qm0qnx ive charge and the silk

  A proton carries a

  The model of the atom shows alhtoyx0/ z/ oh n/s+f,

  A neutral atom always mivtr4 0,4whm+qg 7 uhhas

  An atom has more electrons than protonjezlk; ee9l: 4l ofl:zb/k+ .zs. The atom is

  Materials in which th.o: nn. (rfvx qsi-rx(e electrons are bound very tightly to the nuclei are referred t (rqris. :non-x.v fx(o as

  Materials in which the ele3,8o wpgap5+3mwqhlh ctrons are bound very loosely to the nuclei and can move about freely within the material are referred to p ,lq+awh3 hp5m3 g8woas

  A negatively charged rod is brought near one ckj(( hx,fnbrc**n+ l9i:v ol end of an uncharged metal bar. The end of thek*nlhi (xoj+*,r: cblcv ( nf9 metal bar farthest from the charged rod will be charged

  Sphere A carries a net posrq,f0u ry qd(wb(8,ft itive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched witfyq rw8,r0qdb((,u fth a wire that is grounded. Which statement is correct?

  How can a negatively cha;c bwas05g u,+qim vh+rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charge*/tc 1jsv o )ue5 +bgamox18vkd glass rod. The 58sa+ocb mjoe tv1)xv u */1gkelectroscope

  An originally neutral electroscope is grounded 2/oqg y+/qm6mi zp2xs briefly while a positively charged glass rod is /q2mz6 qp yximog2s+/held near it. After the glass rod is removed, the electroscope

  A positive object touccu)rn( z iwl+vspu )01hes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happwzrn)pliv)+c u us0 (1ens to the leaves?

  A large negatively charged object ir v fr2i9*uzi-.z j8bcs 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 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 nega cfirr -juiv9z8bz.*2tive object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb const* g6g fxl7ticq )y5b:cant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance :( rrez* /cxvbgx e+5xd. The first charge is larger in magnitude than the second ch * rc:(/ge xxvezrbx5+arge.

  Sphere A carries a net chaaxp( *lk:nap11twjm .yu 3iml .:z4uarge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force bpu:umm(ywt 3: .n4x1aj p l*z.1aial ketween them?

  Two charged objects attract each other with a certain force. If the chargesj2da8quxqhy( e: - t2vyb.q13xsqr z) on both objezye vra jxt q3-ys8x 2q:12)qdb.(u qhcts are doubled with no change in separation, the force between them

  Two charges are sepaym zqq(u27tl/rated by a distance d and exert mutual attractive forces of F on each other. If the charges arut2/y7z ql( qme separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc(ved lczu0djz c-7z 64e 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 force is 6jduzz( ed vlz 7cc4-0now equal to

  An electron and a proton arec/3 b;xg6lq huoa1p/ q separated by a distance of 1.0 m. What happens to the magnitu lc guoq h3p6;x1b/aq/de of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance vrxb mk )kw6ly397 d ,my2ozc7bwr,1i 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 prot,xlkk , zyod)wrb m6w vr7ym9 731i2cbon?

  An electron and a proton are separated by a distance of 1.(*0ja8e9 geh6 hbniqtz-ku 1 b0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m c 0 ezkjeab 89-bh*uqhtg1n6( iloser to the proton?

  A point charge of +Q is placed at the cente1 .alo1*6j3l)xyw qtp r2dm xer 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 magnitude of the net electrostatic6 )m lt 1e.o2p dxajwr3x*qly1 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed am3.tepp5e8)j yqhd a3y(r fgi(f) 4xht 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 thee8pi mh(r53txhf.4jfyad q )(e3gy)p center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector5(nac(i5k3e xyb3e5 jcr3dox ?

  At twice the distance from a point charge, the strength of the eleckgsnko; s(qg-r9 +g(otric field

  Is it possible to havg; hf+w)* um7zob- hiel:i.c ie a zero electric field value between a negative and positive charge along hbuz7l:i) i.me w *h+f;o-gc ithe line joining the two charges?

  Is it possible to have a zero electric fcw 5+m1w,h4 br/+ l2 j0t kmqiv+qfaouield value between two positive charges along the lin/b+ f jqm4luw+5hm t2r i+,qv0kwoa 1ce joining the two charges?

  Electric field lines near psitiv+uv la uam3z);e5; /lfvyx/io e point charges

  The electric field shov lb5oca*xl;-5cn y)swn

  Can electric field lines intersect in free spae)zl5v cae56yu- 7 fwn-mpt ,m.)r iacce?

  A solid block of metal in electrost*uo8 ljm5 c4-w mg(oqpatic equilibrium is placed in a uniform electric fie uo 5c*mp8jgl 4moq(w-ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamwom.+hv t:j6lepo8m)6 6 tzk heters are each given the same charge, the electric field (E) midway between the center and the surfac ttkpz j86ev 6m.mh hwl+6o:)oe is

  A cubic block of aluminum rests on a wooden table in a region where a un q7/a ro;z/lvliform electric field is directed straight upward. What can be said c/ /v7lq;orzla oncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ct j. ob 3zl 4*p4+6fngnxtcu1aharge

  A positive point charge is enclosed in a hollow metallic sphere that is grh-p rj 7.jgc 4wek7p ;3rnq4xnounded. As compared to the case without the hollow sphere, the electric field at a point direcnrpje 4wr-qpj77. g x;hc n34ktly above the hollow sphere has

State three properties of conductors in static equili+99rkn pjridx90zpavi* oo*. brium.

State Gauss's law.

  The charge carried by one electrsw v5q1 5k3gy)x vti.1jc qcs rlij5)3on 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 than ele.xh*asr, d.1wu nd-md pk2a6rctrons does this piece ofdh.6rk-nw.x1uad2 r,a *sdp m plastic have?

  What is the charge on 1p*olor7b niw:l2, : 3tdds.plb7neuh,kt,z; kg of protons?

  An atomic nucleus has a charge of y x nldcd9y8.1kten:) $+40e$. 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 v 47 sbn1dgp2kfalues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweef2npsg7b k14 dn them?

  A 1.0-C charge is 15 m from a second chargdvnyml4amwj; .3lzu4k 2y 5atg. 5 (qze, and the force between them is 1.0 N. What is the magnitude of the sec3g tzmd;.awln 5.zk 4j y45al(v ym2quond charge?

  Two 1.0-C charges have a b4n,s4,xx:y*s df orsforce between them of 1.0 N. How far apart are they?

  The force between a do9+ b7vh p6s/lcee u3 e+gta4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apa57 f5nh 8upi66 ev/oi1x1y hb j3fmuffrt, experience a 1.0-N force. If they are moved to a new sef7/ xy86 pmfi3u6 iue 5fbn1hjhf 1o5vparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on uhx33e 4bwvw0the 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 electrost3b430 wwh xuevatic 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 5*jbjzbbl23hh t+fko 5)cq2i 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 acts2tjk3qh h+5fi *2b5o cl bb)jz on the charge at the origin?

  Three point charges are located at the following positions: Q1pk,g9c21(pxn)e f:(to rri v a = 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 nc fer2 x(tg,roa1 9)pk(vi:pthe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point c43.z21; vqypbzcp kg-4za tuqharge 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 ap 3 4;az4 1 qzgk2zqvbu.yp-tct 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); Q2 n 9)vhtlr: j+v= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wnth+j9 :rl) vvhat 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 n; 9 cnvrlqtv-8o v0bk;)uyu9cC is at (0, 0). Wuqc-)v ovnv r lt9b;k08y;uc9hat 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 equin(x1ctf.d 1sgx ;9vlslateral triangle which measures 30 cm on anxcx1s;1. gvfd t(ls9 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 sepoltw )tg l+6;hgnd3n 4arated by 3.0 m. At what point, on a line nwltt ;n+ghg3 o)dl64between the two charges, would 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-xp77g *iikiidr 03d(hC charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the n idd70(7irgi3h ik* pxet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe r;,*em5de cll7l5ss rre can a third positive charge;rc5l 75l*rs smlee,d +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.:hl)(1xti p 5w9n*tyiy dw6xd hd b,2s 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 gr/ shynlmu bc 92b8dy;1avity by the attraction of a fixed proton some distance above it. How far above the ele8n;/ 29y cbsu1mbhdl yctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 0;o(i )wzz*lnse k,wt nonconducting threads which are )zwz; 0w(l ts*ek,oni30 cm long. Both are given 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 of the e +jhgq u+qi0w0 gn;gysb +;-uilectric field at a distance of 1.0 m from the nucleu+jqgus;q0gi-g+yw;+ in0 b hus?

  What are the magnitude and direction of the electric field at a dis *( d7 dxvt -y*hj/y5bwbkwz*ptance of 1.50 m from a 50.0-nC y*b-5j yt h k7*(wdd*bvpzw/x charge?

  A 5.0-C charge is 10 m from a small test charge. What is th ;z xnauq.)ajqsmte2hyv x1x-;;7f n6e magnitude of the electric field at the location of tvs;x);6jx 7.x;hu 2 q-1faqmn ynaztehe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directim; rii o;3zpi(qk1( ncon of the electri;m on;z(i1k cir3i(qpc field?

  A 5.0-C charge is 10 m from a small testkgl/ p6bki.t1 charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tp tk/i l6.gk1bhe location of the test charge?

  Two point charges each have a value of 3.s2f2 o 0xgmy,vbac 0,e0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betw e20b,2fmo,yx0vg scaeen the two charges?

  A 5.0-mC charge is placed at the 0 cm markcppxttv-x8j:b:m n. 1s )3q*x ge el(j of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric8 j)c.s3ltbexx:n1t(qvx e :p g-jpm* field at the 30 cm mark?

  A 5.0-mC charge is place: g maakm1nsi9 j*ua5(k4 -htud at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marnuj9a4 5 mk aah*tgi1m-ku(:sk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0jc4fpkbhnh. j 32+c*u mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the ele.jbp+*cn u2 kcj3f h4hctric field at the point midway between them?

  Three 3.0 mC charges are at the three cornersosacpb ;9q3p8n 33gt-lfi yq . of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. 3q.toaq lp- c yi g;p3sn38f9bFind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges ar8m.kjbn1o4thy8ot0 b2f gw3 ne 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 k.b1y8w3 f024gn j onotmhtb8of 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 ey +dc8n/dqo gken)9g)4shwa.p exo15 lectric field. What is the magnitude o 8c)ka5hs/den e)w. xgqo od4+pn9gy1 f this electric field?

  A particle with a charge of 4.0 mC has a mass tgpm/spi l/o3fs(87aof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is plac6ckvot2)uj y) ed in an electric field of 6000 N/C pointing downward. What charge must be placed on the 2 j)6tc)vuyokball for it to be suspended?

  A foam ball of mass 0.150hu*g 56 lozn8s g carries a charge of -2.00 nC. The ball is placed inside a uniform electricuz l8h65gn *os field, and 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 mC. What is the mag;0q5jm fyq e:onitude of the electric field 5.0 cm from te;m :5oy qfqj0he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W*mnj9snd/3ir o.:f1 m3vyca cy .-cd fhat is the electric field 6.0 cm fromn*3myd ircf.3c:d c9mvof- ya/1n s .j the center of the sphere?