State the law of conservation of electric c58nt 6ryh-tow *,y o+vq/ouuiharge.

  Is it possible for two negative chas6,n7n*f paw(5 l9sn(ez xrmo nl0ip( rges to attract each other?

  Is it possible for a positive and a negative charge to attract i/ihkol k1) 7w(:xym heach other?

  A glass rod is rubbed with a piece of silk. During the process thewxi: gd/)w qrydo/5g) glass rod acquires a positive charge and theirdqd/)xw5:o /y w) gg silk

  A proton carries a

  The model of the atom showg *vzt3f fmg (ekj162cs a

  A neutral atom always haso l*oraad8 oj6n5)o i 55xroz9

  An atom has more electrons than protons. Txmb nclq ,4u-7he atom is

  Materials in which the electrons are bound ver hbz) qko9vxz,jaf+v1p,j/ . qy tightly to the nuclei are referred toq 91+.zpfho,bq)/vj,zav xjk as

  Materials in which the electrons are boe9u vtu:d6 ;-5hmsopsund very loosely to the nuclei and can move about freely within the material are uo:6mvsht -5 e;9udps referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T 37v*zz6vtc cj s6 t5gv sc*zr-ted25che end of the metal bar farthest from the cha27rev5 vzj3tv65c6z*tsg*t c c czd-srged rod will be charged

  Sphere A carries a net positive charge, and sphere B ijfv3 s9+2+z5x uzlzr9nhee q4s neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is cq+5ex z9zv uz 3nr j+2s4lfe9horrect?

  How can a negatively charged rod chy:4*we9 ru *;bsde dqharge an electroscope positively?

  An originally neutral electroscq4z 86fvrd es-z7vhd*ope is briefly touched with a positively charged glass rod. Th8hz fdq*-svdv 6erz47 e electroscope

  An originally neutral electroscope is grounded briefly while a positively cha erzss-9 ah9m4rged glass rod is held near it. After the glass rod i r4mzs ha-s99es removed, the electroscope

  A positive object touches a nekl.gdns)w v;l,94bz xucn.8qutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the .lnw)xvbc;ungkl qd.9 s4 z,8leaves?

  A large negatively charged object is placed on an insulated table. A neu81q2bg55afwnre1 +n vetqz 2vtral metallic ball rolls straight toward the object, but stops beforqtfwq5av1 nbv e8ng2+1 25ezre 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 is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constan zi9 bqv1f7w6)t ,bkcrt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dgmd-p9id t0xs5s3 r+a istance d. The first charge is larger in-+m ddpg 9txai50r s3s magnitude than the second charge.

  Sphere A carries a net charge and s.lbdq6t b)gsox t+07 lphere B is neutral. They are placed near each other on an insulated table. Which stateq .ot7 t6bgxbsl 0dl)+ment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc/xcnr0e 6p-wje. If the charges on both objects are doubled with no crw /60n-cepjx hange in separation, the force between them

  Two charges are separated by a distance d and exert mut-jlk.e ml8 qpen*7,mbual attractive forces of F on each other. If the charges are separated by a distance o- em. kb,lm7*j lnpq8ef d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the for3jev q;9ml b)e8nr)k bce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to ob)r bev m)3n;9kq j8lene-fourth its original value? The force is now equal to

  An electron and a proton are separated bc;eewlsyy(7r.x1 s;o y a distance of 1.0 m. What happens to ;l w1s(cxy ee;s. ry7othe magnitude 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 of 1.0 m. What happens 0 84xkx d,*iac ,;z1ofzjrj f, kh;ouqc7u-ugto the magnitude of the force on the first electron if a second electron g-oc rxc4d ,kujax; uj*i0z8uf; f7o,zq 1kh ,is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatr 4. r1ryh v.fhen7myrc 7tx;; happens to the size of the force on the proton if the electron is moved 0.50 m closer to v;hh 1em 7;r y7y. frtr4xr.ncthe proton?

  A point charge of +Q is placed at thezzm+i5eo*h 1as9a :op center of a square. When a second point charge of -Q is placed at omaza op1he9i+5* :zsone 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 is pl+hkwfm1un1+h aced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle+1h ufnhkwm1+ '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 followir 73oulxib/3wng is not a vector?

  At twice the distance from a point charge, the71cdrc xsxtk h85f 2,hom yl:0 strength of the electric field

  Is it possible to have a zero el jr9l9v*;hgve8m9rqt/b /n dqectric field value between a negative and positiveemb 9g9l/ jht/rq8 ;q9 vv*nrd charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive char ((3yk)wqs c xw6pqz0eges along the line joining the two char qw weck0 6zqp)3sxy((ges?

  Electric field lines near psitive point(dj iw(o*5yspq20ou x charges

  The electric field shoccboj ;4:,cdw2l8 f jswn

  Can electric field lines intersect in free spac,dl 8x smp7)8sef ah6fe?

  A solid block of metal in electrostatic equilibr(p 3vdaqti)lkd859v oium is placed in a uniform electric field.8(ivt5lpk9v 3a d oqd) Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal g7hw thmu jba3;6gchvaq46g ra0 q)** sphere of equal diameters are each given the same charge, the electric field (E) midwa* ag qhb)aj0;hcga36 vr6ghtu m47w*qy between the center and the surface is

  A cubic block of aluminum rests on a wooden table k5,q e;/ yzcjiat(d*pin a region where a uniform electric field is directed straight upward. What can be said concerning thk/jtd(z , iceyq*a;p 5e charge on the block's top surface?

  If a conductor is in electrostatic hubyvh1v 91,w equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphermr-p bz0.jm:ftr 32s0pmi+iz0eac 9oe that is grounded. As ztpfr90be03zsoi2jir+mmcp 0a.-:m compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equiliv3s q hahtr(tx76,c7zbrium.

State Gauss's law.

  The charge carried by one electron is/4 mhc1tp e;mdfcif d5,b t)*k $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has l) 1f5awt aly 9xt6b12me ql/za net charge of +2.00 mC. How many more protons than electrons does thimf9 zte65) alwxb1/l lqaty21 s piece of plastic have?

  What is the charge on 1 kg of protons1 atua4:3 mtjd?

  An atomic nucleus has a ue (oa yp+if1nuxuj gi)4/ 0r7charge 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 values jjx/(mqcxy6*ek4r7wof 2.0 and -4.0 mC, respectively. jw x(4c7ykqej* mr6/x What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between em 85 i8(:mmhkn2g4p lfftmx+them is 1.0 N. What is th5: mf ptgk mlnxe ih+m84(mf28e magnitude of the second charge?

  Two 1.0-C charges have a force befo*u3-ea*8m 4zd s11bqjpptgtween them of 1.0 N. How far apart are they?

  The force between a wlonngkj hp:02rr9 /:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiop5) uw/k/vs5xyc * onally 2.0 cm apart, experience a 1.0-N force. If they are movedc /5ywknx)/oso pu5v * to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2(0v5v )wo z r: zt-bep*dm:aiu.0 mC are 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 magnitude and direction of the electrostatic force which acts on the charge b*vowpv(a :0t5-u)m dzr:eiz at the origin?

  Three point charges are placed on the x-axis. A charge ofasmq,:.6pt - p8emnt5s 3nlec +2.0 mC is placed at the origin, -2.0 m C ,m-tns8eepmt6qp 3.sc5: a lnto 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 origin?

  Three point charges are located at the following positions: Q1 =n ad mvp a0qop1+(5j6h 2.00 mC at x = 1.00 m; Q2 = 3.00 p (mo1jh nad56q a0p+vmC at x = 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 placed at the center of a squar 9ta )daozj7v+ -7k5ba4stga7a b wav-e, 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- 77 -5jao vaa9dtazbkva7ta+bgw 4s) 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 = 5.0 nCg4 h w:y3hpjm7wd- -ji is at (0, 0). What is the magg: mph 7-jd3wh ijw-y4nitude 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 o0y9hrdsqdrxo5(7- qga,vy/ C is at (0, 0). What is the directio rd,/ohq70vd(as y oy-xqg59rn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verbd- h 8(+txgr/vlt1: at-pn zktices of an equilateral triangle which measg1 nah/tv8 dlk- t+:r z(p-bxtures 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 and +4Q, u rnmhz3wb7 cr. (pr1z/ tbc q;m-7o8hwhich are separated by 3.0 m. At what point, on a line between the two chp hbr-wqc7m;bczz 3ohru8mt7(n r. /1arges, 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-Cl bw,gvpl pb -,czd48;mu6e a, 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 zeroamp,, uldgw vc,6-p;el 8bzb 4?

  Charge +2q is placed at the origin b9m +bsy-ho-k7)/ls z1bqn cband charge -q is placed at x = 2a. Where can a third positiveo ssbm -zhl/c-+b7nk9y1qbb ) charge +q be placed so that the force on it is zero?

  A copper penny has a ma3gmgv u3s d1 /r6/ )dl9pheyzbss 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 the force of gravity by the attraction ;l7uuyph.y:(269b zainu bm zof a fixed proton some distance above it. How far above the mbi yup92u7;hbu .l(6za:zn y electron is the proton?

  Two 0.20-g metal spheres are hw/ne tmhdz /l/ -6f kl1ey:cn1fm4k2 p4 fg/guung from a common point by nonconducting threads which are 30 cm long. Both are given identical char//eu 1e n:26/kld kfg z-4tymwh 4fncgp1 lfm/ges, 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 f/4*:w ug e ndz9oypocvl.;9 g+40e. What is the magnitude of the electric field at a distanc*cgvoo l.99p: ygd;4zw eu/ fne of 1.0 m from the nucleus?

  What are the magnitude and directig*( 5-itxab6ni zhn6 zon of the electric field at a distance of 1.50 mzhx6ntib5- *a g(6 niz from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test ;orj.1)lsfdu 3lr+t j6a ,rsecharge. What is the magnitude of the electric field at the location of the test chargejrut1j le,6dfs a. 3lo;rrs+)?

  A 5.0-C charge is 10 m from a small test charge. What is the diri;8)9 qo qkazlvzp,ml*.nj lgrqe4 :f- h2b6dection of the electric fielj4 qd; 2fg h8ol * 9m:zabzl)ri.qle -p,n6vqkd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theo )wvd+-wx3nb bx tj+3 force experienced by a 1+x 3)bowvt+ j 3-wnbdx.0 nC charge placed at the location of the test charge?

  Two point charges each4 -u/b .zznd fw-z 2pv;pgxh0z have a value of 3.0 C and are separated by a distance of 4.0 m. Whp -;zdz4bv z f02-g/xn hpuw.zat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sj nqwy,o2o64ea8 5bzc tick and a -4.0 mC charge isqb ,2e48nw5 ya6j ozco placed at the 50 cm mark. What 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 +bf0 8v-kmo0z ec2 uqland a -4.0 mC charge is placed at the 50 cm mark. At what point on a obm8v0-qf e02 zklc+u line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ze,w3:x d.+soajj3 eg )5jdg pand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electro3jdjdsx:ej p, g3az.+5e)gwic field at the point midway between them?

  Three 3.0 mC charges 5 6+hrzzl::)dpficr vare at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fir5:hpiv:6z f c)rzld +eld at the center of the square.

  Consider a square which is 1.0 m on vgoi z95snhw6ez()53nxf0mih c 6 0n za side. Charges are placed at the corners of the square as follon 3 c6(0xhv 5ezh05wznnii gs fo6)9mzws: +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 plakr6fa7wks yt*xo1 e*o2qw (5wced in a uniform electric field. What isxwk(t7s* 1ow*6rf e5yq o a2wk the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha3haw5t4 *qtx;t.ujz f s 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 i . m,r8,ua1wu3rhc. 5dkc fqq0n2auzts placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspend,cu2u1 rqtqk h.zna,58wd0rf 3m .c uaed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedb.oyni02 0g9/8vhxonyn tqo , inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudyy0 9,hoonn ngtv.b/i8 qx2 o0e and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnf o;4xxd*bxysz;o9z -itude of the electric fi4*;xobf9z y-; osx dzxeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge mm6y1xfe4jwm f(u08qof 3.0 mC. What is the electric field 6.0 cm from the center of the s eju 4mq0ywffm168 xm(phere?