State the law of conservation of electric cuww5u0uv za;3 n1q/scharge.

  Is it possible for two negative charges 0qnh1wruz62lrwxxt 6:mi.5 j h.ixx7 to attract each other?

  Is it possible for a positive and a negative charge to attract each oth8: d;wq:dbwhn ,rjsbay; 2f x*cyyl.7er?

  A glass rod is rubbed with a piece of silk. During oc(f;gd +i,ihthe process the glass rod acquires a positive charge and i goci,;+fd(hthe silk

  A proton carries a

  The model of the atom sho9mkn ,t ju0kt*ws a

  A neutral atom always ha io bz;xii3ai5q*xtv -.6sw/s, kohs: s

  An atom has more electrons than protons. The a2p6ssg(isi ajyg w3 876fi a.ktom is

  Materials in which the electrons are bound ve7cd85 51beqa5yyth b+3m ainv ry tightly to the nuclei are referred taih5bcqdm +87bva 15ey n5t3yo as

  Materials in which the electrons are bound very loosely tsk) 6isl5cs r40r95waed m;xh o the nuclei and can move about frrx0sdsra5cwhm 5;) 4i9esk6leely within the material are referred to as

  A negatively charged rod is brought near one end of an unchal v,c5dg :gi( raq),ocrged metal bar. The end of the metal bar farthecio,l d5c(a)gg: , rqvst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere s1i zam y*f+a3B is neutral. They are placed near each other on an zf3 s+iyam* 1ainsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopen1p)i +poc b,e positively?

  An originally neutral electroscope is briefly touched with a positiveldoo/4 3 cds k+or fh-s)*boox:wre5;iy charged glass rod. -*rooe +k4hc: di5;)o fo ssb3/w odxrThe electroscope

  An originally neutral electroscope is grounded brirr62d)x gp t1hefly while a positively charged glass rod is held near it. After the glass rod is removed, thetrh6)gxp2 1rd electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Th0(h9+e t;fk9c qmp7y ssvr 3vsen a negative object is brought near the electroscts3ssep9qh ;ky rfc+0(7vm9vope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plac8(kxo ij+fx ;ged 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, andoi8kx (j+xfg ; 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 7eqr b9 v(.wdzvj8 *zy$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isit b fkpl6t-2o28; i( kndhq0i larger in magnitude than t;tf2ioip8 0k-bh6qid l(k 2 nthe second charge.

  Sphere A carries a net charge and siwks;pzo dk9 t0h26 8sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force b2 it8k9koh 6;spws 0dzetween them?

  Two charged objects a n( :-czkm fg3uwbj,iz- i,hz7ttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the forz7i ,jzc: k -mfgi- zuwh,n(3bce between them

  Two charges are separated by a distance d and exert mutual attractiveq1+bk eqa0htqnqg/ g7+8ce q1 forces of F on each other. If the charges are q 8+qh0a 1 gn+bq7gte1eqk c/qseparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fooqcl :u 3zn/f 9g;8tdkd rprf7a 8w.z(rce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepp al 8dru.gnz9df3(f k wq:;8cotr/7zaration distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separaw (ll(-auf3y dted by a distance of 1.0 m. What happens to the magnitude ol l(- aud(f3ywf 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 of 1.0 m. Wvyxk zz: 2a; 3qq:zi,nhat happens to the magnitude i kz nv:a,2xz3q y:zq;of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton ufzaasx6el+9 q7wn-; are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cl9wla -sez+f;6q7 ua nxoser to the proton?

  A point charge of +Q is placed at the center of a square. When a second poit5r9 lvpw hg,0+aoam4 nt 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 tpl9go0 tar+m45a,whv he 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 equilateralwzvpe0:o 941* s dhgqw triangle. When a second charge of +Q is placed at* d0vo1 hwgwzps9:eq4 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 ve.; 6sp; vrp4b , mkq.ozyhp5iwctor?

  At twice the distance from a point charge, t1rfth,de:2 up he strength of the electric field

  Is it possible to have a zero electric field val xu055 1v7m berjswg/fue between a negative and positive charge along70w5 frjx5gus/1e mbv the line joining the two charges?

  Is it possible to have a zero ,.ry6i,1ar/mw)kek1xms1afc nsq py 5,p j2k electric field value between two positive charges along the line jo,11y ,mwx.racn2fs k, ar6qmysk/kp5)ip e1jining the two charges?

  Electric field lines near psitive point chjf2dq sa d.p a6zu*8(v0 *lqgsarges

  The electric field shem 2iv14xr.:+gv9x d4;,praf tao4doazce.p own

  Can electric field lin5nwaoyky(9 u 1es intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e-2 p5p*obmsgy lectric field. Give a statement concerning the electric field in the blockopb 5-gm2sy *p's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gil+cobip0s4 zuw/55c3 w6y9uoast 61th atm /m ven the same charge, the electric field (E) midw6 swo6m0ba9wt/pomt 3y/c is+uz54cl5 h1autay between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a una/ oudc .xdn0+iform electric field is directed straight upward. Whna0 dd+o/u cx.at can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecb()(+/1klw os zj0- okiuoq pstric charge

  A positive point charge is enck v)xsnl/ 0mxe:byk 6f)hwk27 losed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point d)ksfx)/yb kkw: 7 ehl0n2mvx6irectly above the hollow sphere has

State three properties of conductors in static equilibrium.)ygci1rl 8 all(sx:g5bq2qs(4c( kh p

State Gauss's law.

  The charge carried by one t . vef9pusea;(*kw r9electron 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 skg6z9rovt i6nt1 -vv,2h4 cqprotons than electrons does this piece of pl6ik 914rsv t gntvcov6-z,2hq astic have?

  What is the charge on 1 kgk i;t+mwfp q7wr*j2a5lf, fx0 of protons?

  An atomic nucleus has a ch5e e)+b0zq cs/qqsg2 iarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se, (dv (pal9jlvparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectiv dval(9p l(jv,ely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and t2f ex2un kj(t 06o:tdd, gq-)t-conpqhe force between them is 1.0 N. What is the magnitude of the second charge?tdp6 qcq-kt )e u:-nfg 0nx,tj d(o2o2

  Two 1.0-C charges have a force between them k:v7c3bc1ga ni4.c wpof 1.0 N. How far apart are they?

  The force between a *h( h4st .xg(v6ezjkm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. o *yp:*rcpm6g*y3i s eIf they are moved t: 3 p*ysr*ocy6eip mg*o a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pavj*kg+-amdk6) lh8blaced 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 magnitude and direction of th+-6a*am)j8lkkhg b vde electrostatic 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 plb ren57pyc1y .px9* traced 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 direct.9tr7rpp 1 5 yncx*ebyion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located)9uu sg/p sxi) 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 fo) up/xsu9 g)sirce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a dzbq65(p d5bm(6 kqrx 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 z(b55dx rqd6p6(q mbk 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.gka( ic )pe*4o2t (rvv30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the v 2t)e*akog4vcpi r((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.o(2f1eza kjzrt8 ) h8o10 m); Q3 = 5.0 nC is at (0, 0). What is the direction 8z1a2ohe(f )otjk rz 8of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the rd(j a.p68tb 0 jlq:pw8pp oz/vertices of an equilateral triangle which me pj /b8ap0zp8p.oj6rlwqd( : tasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and7t . dlc vn(s6xp(d5qc +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possip7c l( ndstd.c56x(q vble 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 = 4.0 m. g0f1j 18ufy ad ceho;.q/y*w6l1 xinj Where on the x-axis can a third charge be pll;o jiefg w61/*fh y1q8d1 0uj.yxca naced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe;syng (-e1k r+fsi iw0re can a third positive char;e i g(ksy+f 0-niswr1ge +q be placed so that the force on it is zero?

  A copper penny has a masc,lb5w2vl j a/.l*qffz a,* tgs of 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 up against te1e +kkyw8og 1o(y5/,keuqbv he force of gravity by the attraction of a fixed proton some distance above it. How far above the electron iygw +koke/k 5,(eqv11 uye8 bos the proton?

  Two 0.20-g metal spheres are hung fro xx +gsdr.d;3wm a common point by nonconducting threads which are 30 .rs gx+ 3x;wddcm 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 +4, gwueh ryud4 9m )s ie,)ba7itbt/l3/0e. What is the magnitude of the electric field at a distance obuwre ml,d/9tet)7) 3ib,ysg i4ha/u f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance c3 fl7r1f576rdwifj nm8n 8vv of 1.50 m from a 50.0-nC charge? 6mfwrvj c8i7 rv81l3ndf 7f5n

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of uc1pzb9 jir uyo67ndg7 c:-8kthe ele 8nu i7oj c1cz-6b7gyudk9:rpctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dnijk asp04x 0-irection of the electric f0s-xj p0a4 inkield?

  A 5.0-C charge is 10 m from a small test charge. euwfi9ng oni*5ypb 7: -:8y ml What is the magnitude of the force experienced by a 1.0 nC channw7:: b uil pmg*iyoe589yf-rge placed at the location of the test charge?

  Two point charges each have a va+fbng,; sivdxt* 1u- vy)ya8olue of 3.0 C and are separated by a distance of 4.0 m. What is the ey-g,)*ob f a utyvsv1n+d;i8 xlectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the m:bviceo 41m40 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wvomem4i: 1b4chat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 d8b(d: wbtqrk-2: 6hq r ryq vsqzv/86mC charge is placed at the 50 cm mark. At what point on a line joining the t h2 /q b(8s rr:66vryqqbzd:tk vwq8-dwo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are js5r2txlj jd 1 4nk ndwt4,1ka-w3ps6 placed at x = 0 and x = 0.20 m. What is the magn5sp x14,3lk jw 6jt1a2- r4tnkdjs dwnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of g.jxx7u5odcs 9)o z5c a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the ej)5 odxogc9u7.s c x5zlectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chai0n w0 9 6jxd9cmi5uro9*jl yyrges are placed at the corners of *mx5wji uj0iry 9nc9o y96l0 dthe 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed grh;j-dpl tr 5a+( ywt5 p66imin a uniform electric field. What is the magnitude of this electricrd;5p+ y6 wrmpt-jl gta6i h(5 field?

  A particle with a charge of 4.0 ms g t)h5kor;2hC 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 i,qtilcmj5f 8 gj2mg)( n an electric field of 6000 N/C pointing downward. What charge must be plafi)j25g lt (m,cqj8gmced on the ball for it to be suspended?

  A foam ball of mass 0.1mnc+sch.: ef9c htd.4p2gwg. 50 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 magnitug mn...heg+ct 9dfh2c: pw4csde and direction of the electric field?

  A metal sphere of radius 10 cm carries a chd)d 3moi rnq7xqte8tj,6b k:i. a3rt1arge of +2.0 mC. What is the magnitude of the electric field 5.0 81dq:b ,otae ti ki3n. qxjr)d m76rt3cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriesriz4onzy, y25)w q p:zkhe *l/ a charge of 3.0 mC. What is the electric fi hy*,rz2 4ik: e5zy)qwo/pnzleld 6.0 cm from the center of the sphere?