State the law of conservation - e ko37rbo3royzep4un2z.7 i of electric charge.

  Is it possible for two negativ d;j0fybl2 t7ee charges to attract each other?

  Is it possible for a positive and a negative charge to attract eac x9p l+m8-dxlsh other?

  A glass rod is rubbed with ; xe;zbnx u;mb+oxj3k8m60;p wlby*-xg oh6 oa piece of silk. During the process the glass rod acquires a positive charge b oxjhmbb 3zx6mu+- ngy;;xl 0;k6o*o8ewp ; xand the silk

  A proton carries a

  The model of the atom mo+/iy hb/otfs3o7g +shows a

  A neutral atom alway8em7eirz xueg ev f18qun1* 4*s has

  An atom has more electrons tha 0)xestn, 7qet4g kjz2n protons. The atom is

  Materials in which the. dlyj*rk:ca bsp98.r electrons are bound very tightly to the nuclei are referredbdc.*ljsp8 k:ya r.9 r to as

  Materials in which the electrons are bound very loosely to ,.hxrb uu-d+ethe nuclei and can move about freely wit,+dbe.xuuhr - hin the material are referred to as

  A negatively charged rod is brought near one end of an uncevz:ry 0yl;9/h5fqcoharged metal bar. The l;yh5f v/0ceq orz9:yend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere Beeh p1hq8; v.;bc m fd5,qxcz, is neutral. They are placed near each other on an insulated table. Sphezq58x; b em,hp,d1e f.hv;qccre B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged 5tov+mf5 wbdu 1p9 4qx)v5evmrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pc 2kog45wx3okositively charged glas wgk5ko3 oxc24s rod. The electroscope

  An originally neutral ele egrm/f2 f(tg 0xy lp02ap74qactroscope is grounded briefly while a positively charged glass rod iap07r /f gl px 2(af24megtqy0s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopq(nd1r orig1 fs; v7ybri3oave86x 81e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.6rnooav81 se 7b r 8ixf(;1 yd1gvir3q What happens to the leaves?

  A large negatively charged object is placed on an insulateo e af)8 dy*rexm tr 40hx:yqa,89,rard 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 theeexa8m)ra 8ay yrr0f xrh :4dq,t *9,o 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 Couq r/ena;.kie lmpvv,uf20(l (h r6u*/ xesn.rlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fich+ yv.ml+n:lrst charge is larger i hc+n m.y:+llvn magnitude than the second charge.

  Sphere A carries a net charge and spm s3+kj01deprpy*dx7 here B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betw10dp+k3xdpr s 7* mejyeen them?

  Two charged objects attract each other with a cer1tczf1 lfu 1aca 0+0v u:je jkmxt4 w:o(:oi.ntain force. If the charges on both objects are doubled with .vt a(t: 1n1fuj lw k1:ex aczj+f 0ociu0mo4:no change in separation, the force between them

  Two charges are separated by a distance d a)(qu vz+knza5 nd exert mutual attractive forces of F on each other. If the charges are separated bv(z aq+ukz5 )ny a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F nx 7p+ugr6l0t fyhl7)naw s6-. What happens to the force 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 isn6s lnh0)f uw +r a7xgp6t7-ly now equal to

  An electron and a proton are separated by a e.b da.*kv0qar9+ bf ndistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to thda 9bv.. bnfaek+r*q0e first electron?

  An electron and a protfcsqp95 0j:pmyun9c*on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first eleq9mnfc sujpc y:p590*ctron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens5a uex,z*gng/ to the 5*g nau,/zx gesize 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 the center of a squ2 ad5wxktn r)+/l+:xzu.qjhu are. When a second point charge of -Q is placed at one of the square's corners, ik5 n2lhxzw+u:t/d qju)+r a. xt 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 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 triangle. Whsgj9 ecmd6 -8mkcc)a8en a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 kcedsc 69)8cm8a-gmj 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 vectorjiz 4pi up wi()6i0zq6?

  At twice the distance from a point charge, the st9qgykf j5ndj8(, u: jkrength of the electric field

  Is it possible to have a zero electric field value between a negativ whk)q.m1w;ja e and positive charge along the line joining the 1jaw;k)hwmq.two charges?

  Is it possible to have a zero electric fielp;n qnbj-el6 cd h)5-gaom54jd value between two positive charges )oc6gnjqe dnp ;bham-j4-l5 5along the line joining the two charges?

  Electric field lines near psiti m5e9oi7 fh)axjy .3g vwp8yb -a1ha+gve point charges

  The electric field s 4odnjd 8fza/;hown

  Can electric field lines intfqqz( gflk8,v-: dx7jf,/ tqe ersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifozi94 qkt1 25thz/*icqgdgq p p;/hql xny;a91rm electric field. Give a statement concerning the electric fyzt*qqnx1 p2iqd/p/9 gh;a1zgc 4t lqih 9k ;5ield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqj tyvjc1-jy 7f tte2asa(m *-it( wd.-ual diameters are each given the same charge, the electric field (E) midway between the center and w.jic-71(t- sf2(e- av tjmtyyd aj*tthe surface is

  A cubic block of aluminum rests on a wooden table in a region ww s4ktvgpir7q j k3c/q7zery iya)29 /3vb/+ ehere a uniform electric field is directed straight upward. What can be said concerning the char4a ryrqt 2 ik//9w3iqv) + bj3/evge77kcpyzsge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrdyki:zv4e+s6bd4 v wf ln0z/ 6ic charge

  A positive point charge is enclosed in a holla yegk4 * whl5jj9ko1+ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dije* alkkh9o5g1y j w4+rectly above the hollow sphere has

State three properties of conductors in static equilibrix2t+-s+lzeyll*ir p2d s78lium.

State Gauss's law.

  The charge carried b:0;fjz i,svub/c h.1lpny k8gy one electron 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 ofx 1:u*l6vjora +2.00 mC. How many more protons than electrons does this piece of plastic have?j ouvr:l a1x6*

  What is the charge on 1 kg of protons?t 6 ,(;u1ub.wtzrepaw

  An atomic nucleus has a chard-l4 8ufhwlb m l3y5(gge of $+40e$. 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 valut1asy p,z21f5w b vmy+es of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet,ay v5bw m1ys+1z2pf tween them?

  A 1.0-C charge is 15 m from )zy7: nfc/( j*rktlbia second charge, and the force between them is 1.0 N. What is the f(n*k:cbir )7jtzyl / magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1aeltjq ggo6t22q) j6 8.0 N. How far apart are they?

  The force between a ,z e7oj53kl lmi )nf40bhjuv9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, c0xeuxpoh s2m *ik74vw*b.w zlg)x8 6experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elect pxxl*we)hvc *z06 kobg8wxsiu 42.m 7ric force between them?

  Three identical point charges of 2.0 mC are placed on the xjx30u7cdb ;sik: n)t t-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third isn 0utk: t; )xjci73sbd 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 w dj t/dbw63x23o dly(are placed on the 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 electrostatic force which acts on the charge at the origboxdd3w 3(j y2l/d6 wtin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xje6kyu8)8qby7hvyk j(m d6 h, = 1.00 m; Q2 = 3.00 mC at (h 6 7m6kbjv8yj8uyqd,)ye h kx = 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 placer4dgnt, 4(d gqd 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 magn4qr( t ng4d,gditude 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 = -1.0 nC irawfa2h7ep mt)4j +z3s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magna 4rpw2 atf7e3)+mjzh itude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);x ;4 ly7ow9;aect ic3t 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 n97 3c clt oex;itaw;y4C charge?

  Three identical charges of r csk in++jz0.cepa- *3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude arn*. skczpe i+0j+- cof the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3./jhpgx64n 4 1o1ysrsy0 m. At what point, on a line between the two charges, would i4gy4n1xp shysr 6o j/1t 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-C charge is at x = 7egh2rp-6 6i vpe m.mr4.0 m. Where on the x-axis can a third charge be placed sg-2er.hem6pv6 pi7r m o the net force on it is zero?

  Charge +2q is placed at the y.up+twpqx/w2 c (-kmorigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed (+t/u-w xpcym2pk. wq so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total/; btpooq+ p+b 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 gra+se8,ho6 vvynt3ut t 1vity by the attraction of a fixed proton some distance above it. How far above thy 36eouh,st 8tvtvn1+e electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads.6yjee6; a7juk1 :utgp tn(qp which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them ap j1ueean up;gt t7jkp6 (.yq:6art 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 electb,m v5t,d 0qhtric field at a distance of 1.0 m from the5qtt bhmv ,d0, nucleus?

  What are the magnitude and direction of the electric field at a dpj g1,-pffh/r8enxo9 istance of 1.50 m from a 50.0f rp1 o/8 x9ehjp-gn,f-nC charge?

  A 5.0-C charge is 10 m from a small test chargezm u8zhjm6 g,/. What is the magnitude of the electric field at the location of the test chuh /mjgzzm6, 8arge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of t i9o0gxz fj8w:he electric field? 9xo80 f:wzgij

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofp1tfusy 5 1r7n the force experienced by a 1.0 nC charge placed at typ5fu n1trs 17he location of the test charge?

  Two point charges each have a value of 3.0 C,xneo5zf tq.p-, (nq z and are separated by a distance of 4.0 m. What is the electric finp5qf xnq-(.o zez,t,eld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ff6g (u91ccf,am :nvf of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is thefmcf :1vcf 9fga,un (6 electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markzf-ij 6lldexyi*1*.:ojk j9t-2e l z h of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jo-2 ik: zz-je *dl16fllj e*oyhi .xtj9ining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pla01if8hms j-y.uwlze : ced at x = 0 and x = 0.20 m. What is the magnitude of the eleju0w y:i-hf.1smle z8 ctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners e-lgtj pmt2c;a 11x cv l1mu)6of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chajv t)lcxl12 ;mpt agem1-u16crge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges r/ 33pia ib0efare 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 of the electric field prebf33iai 0/ at the square's center?

  A force of 10 N acts 41-wc usyyrnc; qo )pof4,qw8 on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this)o c q-4uw4 n81fp;wqro,ysyc electric field?

  A particle with a charge of 4.0 mC has a f xd so)b +p6sjs sb8:9i)ut+lmass 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 4ey-oter 8tw+ of 6000 N/C pointing downward. What chat w8+4 y-oreterge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.15ny+m0t ak-ysboyr91 )0 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 direction of the eleotn) k yys 01m9r+b-ayctric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mrmvfp18av gkc2 f/.x4 C. What is the magnitude of the electric field 2 kmgr1.cp/4 f8xvavf5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thob;y 4vjeey/ k10 av)cdx: 8dhe electric field a)xd /evybc;1k:d 84ye0oj vh6.0 cm from the center of the sphere?