State the law of conservat-/ nnw6zdvy3os(j ,8pye di p5ion of electric charge.

  Is it possible for twol.6yd hs2+ hnyl50 wie negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each(my v.hh2.z1 -/umioxp * mney.kyy *c other?

  A glass rod is rubbed with a piece of silk. k/ w+piuuc1l* w1sz5q During the process the glass rod acquires a positive charge and the suu+sp/11i kqc*l wzw5ilk

  A proton carries a

  The model of the atoy3 )etwo5 oyt*n*gz7xm shows a

  A neutral atom always h nd*vlb +l 23lzyg5wq89q0plk) /zwxa as

  An atom has more electrons ta2 zcy k-7wsst+ba;7mhan protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl( 22dop74 plz3i z,zts mollz:ei are referretl zip(:o3 ,s ldoz47mpz2lz 2d to as

  Materials in which the electrons are bound very loosely to the nuclei andu *oedf/qj+s99h;i bm can move about freely within the materia eib*mhuj/;o9 sd+fq 9l are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. The;v r ezzr.*q.i end of the metal bar farthest from z*e;r.ir zvq.the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They qps5w9f2j( n obe-hze:fc5+ kj0e b+nare placed near each other on an insulated table. Sphere B is briefly touched wb qenbpw+zhof2j(s09 :5e-5kfce+jn ith a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiv (er tc.*ayjj ,iro0z7ely?

  An originally neutral electro*whev w jkb*66scope is briefly touched with a positively charged glass rod6b*e*kjww h 6v. The electroscope

  An originally neutral electroscope is grounded briefly while a positivw-*w 8 sge5g p7lb5ms 2fyigo-ely charged g2s*f g-5 wbpggl5w -yms8i7e olass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,lh( 9iw kuq+gy:txz7y,0 iqn, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What ha7i9qqi,0u:x lgyzhn(y w , tk+ppens to the leaves?

  A large negatively charged object rz(p uzkur6-:g d, ec(is 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 negative object. What u cg:(ur pr(ezkd6,-z is the final charge on each ball?

  Charge is

  What are the units of the Cu:gr 4t)oj:juv *a ; phyfu()bibm1d 3oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a d)mbx-n 3emckaa5ceo y1r6 *q/istance d. The first charge is larger in ma6 x5yeac q)meab1 r3/-nkmco* gnitude than the second charge.

  Sphere A carries a net charge an tflxxvby)o7rg 7(g/*d sphere B is neutral. They are placed near each other on an insulated table. glyxf(*vgb7roxt )/7Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargee1 ynyeu6ad2 ) tjs q/(/kaug4s on both objects are doubled with no change in separation, the 4n/6 uqked1y(a)sget ay/uj2 force between them

  Two charges are separated by a distance eh5d.ss -z8e .as2mi iq8lph) d and exert mutual attractive forces of F on each other. If the cheils.8 .ds5ms82eph)z a-qhiarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attractqm*. d kxo1tpc/4zm .t each other with a force F. What happens to the force between them if one charge is doubled, the other charge 1kdmtx4o q.c.*tz mp/ 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 fsoz9z*bww 8cf+,t x ,a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the f, ,f 8zb+cx9twz*wo sfirst electron?

  An electron and a proton are separated by a distance of 1.0 m. 0+ pwd 5les11y6,e voznpl+igWhat happens to the magnitude of the force on thewp5gld1 06psez,o 1liy +v+ne first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d19qxsa;) im ibistance of 1.0 m. What happens to the size of the force on the proton if the electron is m;1 iabx i)9msqoved 0.50 m closer to the proton?

  A point charge of +Q is pla gaydak5g) n+*ced at the center of a square. When a second point charge of -Q is placed aa)+dan5 k yg*gt 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q zj6bbfb /s /;me r 8hbq6bo:o-is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrost6bbz/ fh m b8:/rbbe6j-s q;ooatic 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 vectorunw/ 5ikq-hb 7j7;pco ?

  At twice the distance from a point charge, the strengthk22ubhe/yw(b rx (2e c of the electric field

  Is it possible to have a zero electric field valuh3 l2j0/qez gte between a negative and positive charge along the liez/t3 g q2lhj0ne joining the two charges?

  Is it possible to have a zero eayw p5n2kzx,( lectric field value between two positive charges along the line joining theyka5 z, w(n2xp two charges?

  Electric field lines near psitive point cbpl::/3 lyqy l0dxxeecs,).jharges

  The electric field shownlx e1, e2szjdt,rl3 m(

  Can electric field lines intersect in fr gcf6jj kpg-;,ee space?

  A solid block of metal in electrostatic eqe2 5 egwtidmb quj5*69uilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blocku6 5t qd5 i9*wmgebje2's interior.

  If a solid metal sphere and a hollow met/9upv2 ybj eu0a9gxe, al sphere of equal diameters are each given the same charge, the electric field (E) midway between the ee,0up/y9ag x9 uv b2jcenter and the surface is

  A cubic block of aluminu-wyzwwpv* (k;l +9; bluxdpk6 m rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on t(bpwu zlw dpkxl+9 k6*-vy;w; he block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg f-obdqdx01w-ak/4/ )cq xgzd9u8n / vndfy) ee

  A positive point charge is enclosed in a hollow metaour. s4segjvf +94d: dllic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point diresv.j: 9gdsfe4odr u+4ctly above the hollow sphere has

State three properties of conductors in static equilibrb ::7 w8mxa 7rsp3h -vnsg:hvxium.

State Gauss's law.

  The charge carried by one electrol(zh .l g2,ebx,nxlq/n 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 th/s; y k 0 pcb76wp/tsimyl+s,rnff b8.vau a19an electrons does thisfum0 rk. s 1,8t/cfy9s b6lyai;bap vw+ p/7sn piece of plastic have?

  What is the charge on 1 k)t+l evbwa gmxjtr7. wk6.3,bg of protons?

  An atomic nucleus has a cha67aii ewkhc* ;rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepuc 6rh,oih1r -arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrr-u,cih 6 1ohric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweemvl h4icu,c;aj ;g8;cn them is 1.0 N. What is the magnitude of the second charge? c8ju,;chv4 ;acm;ilg

  Two 1.0-C charges have a force between them of 1.0 N. How far apaoi;avmq150w/pb.mk m o*g x6y rt are they?

  The force between a e ast *v vklpmzf0/3kn5wk 2tqyf: ij(o ))/(a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apvxfy0zs 6hwum7s982l3l ed37/xq u zeart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwfd z 6wes8/ 9u37lq7zlye2 0sumvxx3heen them?

  Three identical poin y,haau3 .qqt-nq9moi-e+4 p bt charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, a-b3y ntha e.-,iqaup94q m o+qnd the third is 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 placed on the x-axis.ksr ) 2nu+fhd*xhw t2b*(sm2k 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 tn22 hsh+* 2ks*)k( d xtbrmuwfhe magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 w35je1ksgo7l9 m w 1agmC 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 fol7 w1 g 13ekams5w9ogjrce on the 3.00-mC charge?

  A point charge of +Q is pr yo 0m3n2ky*placed 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 my n0yo mrp32k*agnitude 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 is at (0, 0.10 m); Q3 =c5hs js(fmo9 8+2v lsm 5.0 nC is at (0, 0). What is the magnitufs h+ j25csm89l s(vmode 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,b3bj5x55u s 6wu oce:paes6(sv b,zx * 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC o sue65vb*3ux awebj6( x : z5,bc5sspcharge?

  Three identical charges of 3.0 mC are placed at the vertices of an nlgzsz0-ahnr +9+ 6 1z4 zsz1x ws,k+tlxm4xtequilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which , xz 9zx-11k+zst +wlgr4t6zm+z4 xas0lnhnsacts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pou f476x05 h-7hvtjzhgk r0gxmint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forc0rxuh g0h5-tvhkf47jzgx 7 m6e acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where ontzcs*:x4cg )i the x-axic*x4:)sctiz g s can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the orx)(sh 27jn) nmwqwgm 4igin and charge -q is placed at x = 2a. Where can a third positive charge +qmw )hm(n7n4sgq 2w) xj be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t,xbtdcv9bp ,s 23 b;qaotal 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 gk*rp( 4ezbm7*fl g ;8idlhx0cravity by the attraction of a fixed proton some distance above it. How far above the electron is the prgx m(b*k hr 8ill47;ef0dcp*zoton?

  Two 0.20-g metal spheres are hung from a common point by nonc8d ixx bo,;s;z76gjzvonducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apa ; xdzgjx;zvobs8,i76rt 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 the65mu rj hybg e+:8k. u;)ay 1v-gwhmzy electric fieldj: h5 -m+u.yv ; guy1ahbe6gk r)yzmw8 at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fiu2y mt- u wy-qwgi+vvck(-8u3ff8xxt6g h 10zeld at a distance of 1.50 m from a tu zm8yxgxwv 60-g+ 2th-yu f31vk-cqw8(uif50.0-nC charge?

  A 5.0-C charge is 10 m from a small ten*j0gdz /xdbz/(h sn 6st charge. What is the magnitude of the electric field at the location of the test chargz*/j /dnnbdgzs x h60(e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of theyo 8a* perpbdf9 ,)bi, electricbrb9 f,p i,yopa)e*d8 field?

  A 5.0-C charge is 10 m faxutq /dk/t5 -rom a small test charge. What is the magnitude of the force experienced bd/xtt/a kq5-u y a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a -:f nclo*7b)b jlcca -distance of 4.0 m. What is the electric cjfc boa)n:-- *clb7lfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a v/qb 7smm ,yf*g,9rua-4.0 mC charge is placed at the 50 cm mark. What g mv *a,9mru7,fs/y bqis the electric field at the 30 cm mark?

  A 5.0-mC charge is placedkx6qj; *j/wf4 :/sle7cexkpi at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line js;ikjx *fqwee 6kj/x c4l p7/:oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plgrxp7l.p x :h;aced at x = 0 and x = 0.20 m. What is the magnitudehlg:;7pp.r xx of the electric field at the point midway between them?

  Three 3.0 mC charges are at e:;v0b 0ibwd4-y u( 9aenudqq the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cha( uvqiwnquy4:b-; 0d dbae 0e9rge. Find the electric field at the center of the square.

  Consider a square whicww b qp4da,6z+fc1e+xh is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 6 df e+pwac+xb,1z 4wq1); +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 j 9gn7)mfa6 esl 6ezy-a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this eln9zey)7la6g sj6 mfe-ectric field?

  A particle with a charge of 4.0 mC b/ykzxyna9(0kn , 0dy has a mass 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 of 6000 N/lh *t*y ijo5k)bb 6vdb01rz42m,th pbC pointing downward. What charge must be placed on the ball forivplt1 4*j b2 6 5bo*rbth ,ym0)dzbhk it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pt4dgw unc ,gk7i2ea 0.:nkl/s-8b qlelaced inside a uniform electric field, and is suspended against the force of gravity. What are the magni7cquistg:ele-nbg, /dk42.l80 nka w tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mCz 0gcj -3shae;. What is the magnitude of the electric field 5.0 cma0sjzc-h; 3ge from the sphere's surface?

  A metal sphere of radius 2.0 iic-pj0u w.0bpbc8a9 cm carries a charge of 3.0 mC. What is the electric field 6.0 cwi09pj.-i b8c0upba cm from the center of the sphere?