State the law of conservation ofbg vf(1jn x7qj ue7z*5 electric charge.

  Is it possible for two negative charges to attract eah;m h*snf4ja4ch other?

  Is it possible for a 4 7,:,3a a0dpk)b cp btr/dwabsd sl2apositive and a negative charge to attract each other?

  A glass rod is rubbed with a po owi6*xqor.m * exeffk .*hi)x63k:b iece of silk. During the process the glass rod acquires a positive charge an w.rhe.eof3 *i* i)x:66 kboqmkfo*xxd the silk

  A proton carries a

  The model of the atom shbrx l+4fl(00ed* sku tows a

  A neutral atom always har37wd1l 26rj vvblx:xs

  An atom has more electrons than prot2ln1:izouo(v(uu; m5jb8yp j ons. The atom is

  Materials in which the electrons are bound very tightwl 6bw(vzgj/f3tl z-7qy*0 rx3 m zr;jly to the nuclei are referred f(w3 m 3*7b y zlqrx6;/vztgz lwjj0r-to as

  Materials in which the electrons are bound very loosely to the nn)5v+u jj)u dpuclei and can move aboj 5pjn) +u)vduut freely within the material are referred to as

  A negatively charged rod is brought near one end ofr:+9 hz k4behpv9n;nl aj) a9q an uncharged metal bar. The end ofz r+npq: lv94 9kbe) ajah9;hn the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and s9a)enz)s*z kdphere B is neutral. They are placed near each other on an insulated table. Sphere B ind)e*azk z) 9ss briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro/mr:9g41tqb6c cwyv y d charge an electroscope positively?

  An originally neutral electroscope is bfc8 drnee. 2:yriefly touched with a positively charged glass rod. The r8ef e.yc2 nd:electroscope

  An originally neutral electroscope is grounded br-3go xhubpe: :pa(3s riefly while a positively charged glass rod is held near it. After the glass rod is ox :3hppa(3es gr-u:bremoved, the electroscope

  A positive object touches a neutrn t v q:arb0anw3i-,(ral electroscope, and the leaves separate. Then a negative object is brought iartv3:n w, nbqr(0a-near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plan*:.oxsqd(w: ve(rm 0 .wqjif ced 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 negative objec.*.( vnwisxqoq w mfrd(:ej0: t. What is the final charge on each ball?

  Charge is

  What are the units of the Cou8w pe/re +vw;mj.j hs5lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Theynlox vw 2+fuu72 km 6tw, 4ntbjh(-4n first charge is larger in mwy624h -fbtjm tvl n 47u+2ox,(uwnk nagnitude than the second charge.

  Sphere A carries a net charge and sphb jluqc* ye;5 u(4(deyg(r.p 8seis8dere B is neutral. They are placed near each other on an insulated table. Which statement bestrjd u;e5idcy b yps ql(*(8.4es g(ue8 describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. (bmd qe 5a-wmkaymcc*77b5: a If the charges on both objects are doubled with no chang75a5bwyek bmc :a-7c*(dmmqa e in separation, the force between them

  Two charges are separated by a dikhej/8x if l0+stance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance ofje+fxh0l/ ki8 d/3, what are the new mutual forces?

  Two charged objects attract each other with qrt,zbea3m0pda,w+ m lpm r 43)-ma6m a force F. What happens to the force between them if one charge is doubled6mlepp q bmz -d,m,amm)r3 +w0at4a 3r, the other charge is tripled, 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 hipeh3 x 27l*y* k)shakappens to the magnitude of the force on the pr7lhpaex3 )2*kys* ihkoton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 f*-xxh, -qpzgzukw+5778i p fkh* qa um. What happens to the magnitude of the force on the first electron if a second electron is placegi,fh* z+hxppz5*7wq8 u -k-q u7fkxad next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whahfrnngo4i a-d73 5 +2t 6q m-yikxi8qyt happens to the size i8tkih672 i3qn r+f yg-nymxa d-4q5o 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 8e+zabah+ as2 53gt2whr* p qdthe 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 square. Whaaa2q sh 3+2hdgze5w par+tb *8t 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 tria) q u3csj5hm+xsn/so/ ngle. When a second charge of s )q+ho5scj s m/3/nxu+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 other vertices?

  Which of the following is not a viv:mx8wsjs i(+li,c3v nk+) uar8bo 4ector?

  At twice the distance from a point charge, then -l k gve10g69r2 w6vyw7lhyy strength of the electric field

  Is it possible to have a zero electric field value between a negative and posity u rmbi7xb7 8e7j- 2ve9k g*wa c/)q5:ylmcosive charge along the line joininjmscex y5)9/ qbu : cw8gir y*oklvmbe72a7- 7g the two charges?

  Is it possible to have a zero electric field value between two positive charges xg;a(w vta y66aloxv w;a tg(ay66ng the line joining the two charges?

  Electric field lines near psitive 5 gfahx2 edpwdt 1zcyv 7q/q9b57vj 08point charges

  The electric field shown ig5i e,.ud * a uko1p6saz55eb

  Can electric field lines intersect in free space?30j+ /+w g:lxx tcx)+ kwewzyo k;qq1q

  A solid block of metal in electrostatic equ1 z 5uvb9esl)rilibrium is placed in a uniform electric field. Give a statement concerning the electric field in ul rzbv19)se5the block's interior.

  If a solid metal spher v 4v,, wyjza:: cxn7zx:x5quke and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E:n xwa v5xzc,xq,7 4 yj:uz:kv) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden m-qc, 2gk;60kds- r0cgu0xi(n lidb mtable in a region where a uniform electric field is directed straig6; 0gkm ls-d(gc rnxbq2mi,0k i cd-0uht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near a gmp8 9u7x:,k ,m9qikeij2zme n electric charge

  A positive point charge is enclosed i2 n+vrit ba7k(n a hollow metallic sphere that is grounded. As comparbi( nkv7ta r2+ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors p ed+az 3zx 4s2 +vb-qiz/b6rwin static equilibrium.

State Gauss's law.

  The charge carried by one el x 2n9sk/6qe,mydmy,aectron 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, )tk.nhqqxdqn s3b57.00 mC. How many more protons than electrons do ts57,)n3qqxkdbnq.h es this piece of plastic have?

  What is the charge on 1 kg*vqzbjp (8:v 72o bew9yho+.aap*nn a of protons?

  An atomic nucleus has a charge of c prpn1q *a2c 3-iuabt:x((mi $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated5xefa+os t b50*2 rf9e8z jvkk by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electricok f5*2 ajs5etfb+v xk re908z force between them?

  A 1.0-C charge is 15 mt pmt082vn hz 0::*d t6gmwlmo from a second charge, and the force between them is 1.0 N. What is the magnitude*ntgotm: v tlmh0 0wpd68zm:2 of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How ve6a j 1k:c(h. ;wxobnfar apart are they?

  The force between a / e -ymij;:bjj-jc9wu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial6hvo m3m-7 qqinh25,mchflv;d8t/ lx ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new 38v qcmh5 m72dlxv/hi,ot qf hm;6n-l separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are k.1w (;wb t sidmis( azj008b7iuck n,placed on 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 magnitu8sj0 n1.b scd7k; ik z(mtb(,auiwi w0de 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 mCwh pvp);8h(gg 1p- yq2a)myd*fjb*m p 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 on the charge at th m pah8ggp)qyb1;-fp dw2v(mhyj **p)e origin?

  Three point charges are8x 4vxv l(qc/2mwtim ,mvj .p. located at the 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 on the 3.00-mC charl, m.vcw v x(824xtvi.p /mmjqge?

  A point charge of +Q is placed at tkku -i,d1f1t phe 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 ck ,k1-1pf tiudenter 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5s.(9rpn:oycplwt* w4 .0 nC is at (0, 0). What is rol*yw. n4scp9tp:(w the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)pqti-c+;w h 4krk a2)6hkhv6 p; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directio6 p i2hq6kp;hawvr ht4k+- ck)n of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an az8 bf6p-tpo8c w/5tf51ni;u7;,krwntw qlq equilateral triangle which measures 30 cm on a8pu5 tk,wlb;iat681/f7npnzwt -; 5c foqqrw 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 a. :rmt:dj i0ky:nd y*zp.)f dtre separated by 3.0 m. At what point, on a line t d :*drzpfji:. k)d m:tn.yy0between 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 t;p yimz9z8 +bihe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is ipyz89b mzi;+zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.* 3m7hki.pt 4 6fdpabj Where can a third positive charge +q be placed so that the t.a*pj76fpkd 4i b hm3force on it is zero?

  A copper penny has a mass of 3.0 g-anlu b+jx, i g3w8pu*. 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 attraovttm/) 4al s-4nff7gction of a fixed proton some distance above it. Hg 7stlfn t)v-o/ a4f4mow far above the electron is the proton?

  Two 0.20-g metal spheres are hung *q(+kv -x ikgja94bdffrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unti(avibxk+4q*- kdf9gjl the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4w u*zwv; (ix p bmzce2t+.j5v/0e. What is the magnitude of the electric field at tv2vw ez.m 5z b(+p j/iwcxu;*a distance of 1.0 m from the nucleus?

  What are the magnitude andn2x ku -h 80ncl25fyvw direction of the electric field at a distance of 1.50 m from a 50.0-n5k80l2xf hycn2 nw uv-C charge?

  A 5.0-C charge is 10 m from a small test 4 ctlk0/w 2crpd3h-nodx ;9uzcharge. What is the magnitude of the e0cd pco/-kxtdzh3;4urn9wl 2lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcd bv4.0uiwdk+p,9 )bhb ki/h/fjq)v u tion of the electric fielh/k+i pfdb bq. u 4,) vwubk/hij)9vd0d?

  A 5.0-C charge is 10 m from a small test charge. What is tzm gwuar je()m7 gp4 bher-5::he magnitude of the force experienced by a 1.0 nC charge placedw4-z:ba m7g:(gpure re5m h)j at the location of the test charge?

  Two point charges ea r0l6xu rivq12)sn)xgch have a value of 3.0 C and are separated by a distance of 4.0 m. What is thgx 2lvnx06) rqu r)1ise electric field at a point midway between the two charges?

  A 5.0-mC charge is pl 2 zuba axi/b9r9u(hl .sw2kk4aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the e4z9x a .uh9(rkk/ibsa2w2lub lectric field at the 30 cm mark?

  A 5.0-mC charge is placed at thpf*zi 5d t/o8re 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what p/8 f irpz*tod5oint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = (jf*y g ts6vl.0.20 m. What is the magnitude of the electric field at the point midway between vf t.jy(6*lsgthem?

  Three 3.0 mC charges are at the three corners of a squmv8(* maazkrovus14 f1/0zjyare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tvv (*0 zf8mraa ouykj 4ms11/zhe square.

  Consider a square which is 1.0 m on a side.yl cc59 zjm4y- Charges are 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). m z54-lyc9 yjc What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.o wk(kvb, w31h-(xb hq0 mC when it is placed in a uniform electric field. What is the magnio,k q 1 hhb-x(3vwb(wktude of this electric field?

  A particle with a charge of 4.0 mC has a maq3yug v, its: ;,;hgrvwpa(.wia;a +oss 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 gquvvb7 i+1(,bff3da m is placed in an electric field of 6000 N/C pointing downward. What charge must ia,uv v3qf db(1+ bmf7be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2 i39k8zz i2bkpw-fjh1rii:.5 gy ie6c.00 nC. The ball is placed inside a uniform rwyie j. ih5-ib32 cpgf961 kk:zii8zelectric 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 ci6ift4wl hs22m carries a charge of +2.0 mC. What is the magnitude of the electric field l64w t22ihi sf5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha (b7x)r8kx9mxv)ijdg rge of 3.0 mC. What is the electric field 6.0 cm from the cxrv)m 9(8g)xi bd7kjxenter of the sphere?