State the law of conserva sf 0+ohkwz48fen, bf(tion of electric charge.

  Is it possible for two negative chargen: )fd4ia :n ;ptax3zts to attract each other?

  Is it possible for a positive and a negative charge to at6 ,q*h wep2lp (vxqg1stract each other?

  A glass rod is rubbed with a piece of silk. Dur ju 3,znq37vq g8q qsqle7-6dring the process the glass rod acquires a positg u8 6erjlq 37zsqq,3-dqvq n7ive charge and the silk

  A proton carries a

  The model of the atom shows av:d439j.gmii m zw,;jk- 7jnbn+ktha

  A neutral atom always has(m5or*w6 eztdl cp h jhu4/f9*

  An atom has more electrons than protons. The atom mw4;,ys3 i9nt xzef4fis

  Materials in which the electrons arehnu h8vjox;b//* w(lg bound very tightly to the nuclei are referred toj vox*/u; gnwh/l8hb( as

  Materials in which the electrons are bound very lo41-jm knqil r4osely to the nuclei and can move about freely within the mate1ij-k 4 q4nrlmrial are referred to as

  A negatively charged rod is brought near one end of an uncfhkvk jfc;3;w8gl77 wharged metal bar. The end of the metal bar farthest from the charged rod wi cw 7;3 gff7vlj8;khkwll be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placeq)/te,e g-jlk d near each other okjtqgle)/,e- n an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscos*zpln;d; (7kvyybu 2pe positively?

  An originally neutral electroscopegt-df- cutxb2c8v* o. is briefly touched with a positively charged glass rod. The ecgbd28- *.-ufcxovttlectroscope

  An originally neutraloybf 2j)tga drmu0 12* electroscope is grounded briefly while a positively charged glass rod is held ne)12af 0*j god2muy rbtar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thn0rs8(elt c/.wsoz rg mio:*0e leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whag r0o(w/t8 re*:mol . zcsins0t happens to the leaves?

  A large negatively charged oakungnd u:+ d2y 3r..s x3qlo8i-kn-r fri2m7bject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutra:ron-annx 3di.82+s- ulm qk3kuryi gfd7.r 2 l 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 ncc1te6zs5sv,t 0: s qCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge (/spl w)dv/+)o yabnyis larger in magnitude than pl/so ab)wy( +d/) vynthe second charge.

  Sphere A carries a net charge and sphere B fb 3l7filt,p*-:. k+ g* xx mzfoj1trgis neutral. They are placed near each other on an insulated table. Which statement best describes the elecbxo llf7*mxk.r i, z1jtg t*gf f3:-+ptrostatic force between them?

  Two charged objects attract each other with a certain ao0pi o16uhj5q16 rpn force. If the charges on both objects are doubled with no change in separation, the force betao16nj5 i0op q6uph 1rween them

  Two charges are separatehx(m ra h(vvcmvu- .24d by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are th.2r(auh xhv4cmmv-(v e new mutual forces?

  Two charged objects attract et 1a-,+ w.osjsp*m+ wms*veqyach other with a force F. What happens to the force betweeo t+m ws1s*-w,y+.*vsjam epqn 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 is now equal to

  An electron and a proto7-yfjrd 91vf( mcek 3dn are separated by a distance of 1.0 m. What happens to the magnid-k(13dyffv7jc 9rm e tude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatxr39h+.f o 6,0 0c jeejralwjyed by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton ece0ay .wj0 xh3l6j9 ,rrjf+o?

  An electron and a proton are separated by a distance of 1.0 m. Whatdp0 dp;ivekr9u2 --8py )sda r happens to the size of the force on the p0)8 pp;yi9svkred d-prd2 -uaroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squa gt1qiva+j72b. kr4 6rbzp* lpre. 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 corv*t2qkzg. rbilbjrp1+a6 7p4ners 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. Whed ;hp/l+e+6.v2 btezz ua1uajn a second charge of +Q i z e2hpuz e.+uva1d/6+jal bt;s 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 4sel ani23 5whvector?

  At twice the distance from a point charge, the strength of tx3b ibil5y5 ,p) )bikq3d 2 rcrn+u7rwhe electric field

  Is it possible to have a zero electric field value between a negative and posi.qj9 yany .t7c,um9 ymtive charge 9yy9jun,q tm. 7y.amcalong the line joining the two charges?

  Is it possible to have a zero electri/p v-88mhtw qvc field value between two positive charges ahvt 8vm-/8q wplong the line joining the two charges?

  Electric field lines near psiti8t0e ny,ht1 r gii7vk/ve point charges

  The electric field shownrhf e(b;whz /z *0m33kypmvd,

  Can electric field lines intersectr6ce*/m4zx 8vdgt 0(ce6zn ok in free space?

  A solid block of metal in electrostatic eqb 94,xv,9ndbke, ru lfuilibrium is placed in a uniform electric field. Give a sta,,d4 9 kf9 rvenblu,bxtement concerning the electric field in the block's interior.

  If a solid metal sphere and a ;oj x:(x+z ,d jyuqjd:/k9fxo hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betw ooju 9 xxqdzyf,xj(+;: :jk/deen the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where vr;7dwaauji nob2kn/2 3:su wu*16/fsiw (pva uniform electric/iw 26bvnrsn v(:koja 3pu*i2; 1 wuuswaf d/7 field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele7vgb3ehjx k/-i r yasiv.e;/1ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metall +i lwan8rx6f)ic sphere that is grounded. As compared to the case without wl+fr)i 6an8 xthe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriud*;yn,q)u qjc m.

State Gauss's law.

  The charge carried by one electron iszlbxdyca6/-ceq;dv *2xa,wv 1 v5zz3 m: rpf2 $e = -1.6 \times 10^{-19} \; C$. 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 th4xq- zg s4kn/vbmy1hf; c5-7q7 wuauhan electrons does this piece of plas/74 -nq ubuhq4agz w5xv1 -shmcf;y7k tic have?

  What is the charge oj6bfj)fgh; 8k n 1 kg of protons?

  An atomic nucleus has a charge5eb;znv8 zq-grqa:2 g 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 charges9dwrys) 5e gxw4qfg8ax )6/p values of 2.0 and -4.0 mC, respectively. What s) 6 5prfgx gy4)e9dqwwa8 /xsis the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargezl7b g)uo)k 0t, and the force between them is 1.0 N. What is the magnitude of the second btz 0k ul)og7)charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparq a 2yzvzhh. p6 ,+r.dsu0xkh/t are they?

  The force between a *qnho s1 k82mt$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apu 62 pcy5oygxt::ihh1 art, experience a 1.0-N force. If they are moved to a new separy6:1:ohighctxuy 5 p2ation of 8.0 cm, what is the electric force between them?

  Three identical point charges :l/v; ld-slx u s+e9ubq+si5tof 2.0 mC are placed on the x-axis. The first charge is at the origin, the sec+bil+sdq-5ve: t s9u s /;lxluond 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 at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0qw*9 :c;znoeu mC is placed at the origin, -2.0 m ;9* uzoe:wnqc 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 origin?

  Three point charges are located at the following posit xlgn6oxsnkk422 lx x la6ay7 8o+83caions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0l2676 loogn8axy +2knxakxx sla3c 48; 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 square, and a02f20opkqkpjzc e5 4y 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 4 kpj52qy2foz0e 0pckthe center. What is the magnitude 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 = 5.0 nCk4ey0ec6 dl:t 9n u;jzor 8y7hql)4mu is at (0, 0). What is le0ukq 7ject)8 44: myrhznul 9;yo6 dthe 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 is0gmeo ,a ,4+6nbobjnmso a b(3 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direct,(sb b m oe0g4najom3ab6,+ noion of the net force on the 5.0 nC charge?

  Three identical charges ofho8xej 6s. j(y 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the ch(js6 x yoj8e.harges?

  Consider point charges of +Q and +*9es,t8ti7wkj u5 2rt7w xkga 4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electroti 578t ra * txw9jg2sukk,w7estatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargexw9n+;r 1 antw is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on innt+9wa1 rw;x t is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. hjxu50ev /6hz/ t;yqx Where canu xhjx6;/h y5zteq0/v a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a gvf() a8lir,fmass 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 of a fixa) 6lj;id dk6wp1f x5ned proton some distance above it. How far 1ka 6dd lifwn;x)6j 5pabove the electron is the proton?

  Two 0.20-g metal spheres are hun5nlxk77tlev 6 +5l 9 uejt3i3xt0gm axg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces lkl37v+x36mtxel9t 5jga 05nxui 7 tethem 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 +40e. What is the magnitudewkhmd (cqq0aqj1 e 8w t--:gu+ of the electric fuh- dg8a ( k :-qq1+wcetjmw0qield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distvgwxk jl .9*9u1pri /eance of 1.50 m fkiwp x1l *9r.jv/9geu rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test 8kx+ra6k z y3:agoa2i charge. What is the magnitude of the electric fie 62+ogkraaakz :8x3yi ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofp3mm s,v17 tjy the electr mpvtysm31j7 ,ic field?

  A 5.0-C charge is 10 m from a small tesj+ oi;pn5em;yt charge. What is the magnitude of the force experienced by a 1.0 nC c5;ynoj;i e+ pmharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Cowhk x qy9-prjoq9y/, jvb5/4 and are separated by a distance of 4.0 m. What is the electric field at a point midway betweenrwo 9 q4p/yko9qh5byx vj-,j/ the two charges?

  A 5.0-mC charge is plawttcw1c f 1f5/ rg+;lmced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed / ctcg t1ff;w+1m r5wlat 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 stickdj4 :8phj jw*d and a -4.0 mC charge is placed at the 50 cm mark. At what pj jwhd8d: *j4point on a line joining the two charges is the electric field zero?

  Two point charges of +3. mpm7-hepgzz. - a2o 5/e*nsmp0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magsp-ma-zm/2op gep5n h .m *7eznitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of8q ddu n+zv+p0 a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fivnu+d0pd+8 z qeld at the center of the square.

  Consider a square which is 1.0 m on a side. Charg/*+u hzi )mda u2g)ufgtn(/byes 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). What is the magnitude of the electric field at i)ua *t (dzhyf b)/gu2ug+ mn/the square's center?

  A force of 10 N acts on a charge of 0re3i(sfu -lji0q j5e5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electr0(qiisee0lr 3 fju5 -jic field?

  A particle with a charge of 4.0 mC has a mass ofe x/r 8fvot ekdfpydb/,gf0hx7)rvv e.77:y + $5.0 \times 10^{-3} \; kg$. 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 elec*h 5pvhfv;ba y1*t q8mtric field of 6000 N/C pointing vb;q*m f1vht ya8hp *5downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cfw/ 6mtdq -ui1y lht85arries a charge of -2.00 nC. The ball is placed inside a uniform6/8 i- luy qdtf5m1htw electric 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 cm carries a charge of +2.0 mC. Whaq85:uw0u ,l f oqypokqe-lf)8d5k,qu t is the magnitude of the k yw8d, e-qq0) o5ouuqp 8:q lf5lkf,uelectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What-w ahiyr0(xj;j+z3 f p is the electric field 6.0 cm from the center of the sphejiraj0xf3( zp+; why-re?