State the law of conserva f olkmy1r6 h88yr/jf1tion of electric charge.

  Is it possible for two negative charges to atsc5hca )g5 *j0x6d/ efa/ip catract each other?

  Is it possible for a positive and a negative charge to ak x+d2qog / dm- ,xpyv77fh2oottract each other?

  A glass rod is rubbed with a piece of silk-pm1-b0dwvx tkk9 .sj . During the process the glass rod acquires a vk.k -w9 t j0sb-pd1xmpositive charge and the silk

  A proton carries a

  The model of the ato4qna7 r h:qx7j5d)sex*n e ;azm shows a

  A neutral atom always hasi6w7 fzkl r 79u5zle9(p xvu1s

  An atom has more electrons thanb41j0mmp4 ood protons. The atom is

  Materials in which the electrons are bound very tighta+ a+ge2s:5cm.g rneif s n-4vly to the nuclei are referred to ase5m+r ia gsvcsfg4+ -:2nne a.

  Materials in which the f8ajk) )8 az*epome,aelectrons are bound very loosely to the nuclei and can move about freely withi)oaea ea)*m zj8f,8 pkn the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal hbr a3pq lijmj:tg/-v .n6+6ex ,a/vsbar. The end of the metal bar farthest from the charged rodr:p+.qan3, svm/g athe6j/- x lvi6jb will be charged

  Sphere A carries a net positive charge, and s2sao9 20g,he* s ojshophere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grouno9jssgo0*,sh oe 22 ahded. Which statement is correct?

  How can a negatively charged rod charg71t+qkfz99+9cyb w ( mptedezix4uy. e an electroscope positively?

  An originally neutral electroscope is briefly touchd a6rv6 oiauok9rh5)n7 3nc7med with a positively charged glass rod. The electrovk 69 )crhi na57od6m3u7naro scope

  An originally neutral electroscope is grounded bry., ;ek0i yewas: t)ge;-jtnniefly while a positively charged glass rod is held near it. After the glass roj ;,yt:eg-es)e; t.iaykn0 wnd is removed, the electroscope

  A positive object touches a neutra nzfo3dk1j9;jcy22db l electroscope, and the leaves separate. Then a negoc 3ddbz jyn2j12 f;9kative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placl9 4w4 xk;dup/ sbi.ysed 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 thebw;/pdil4s x4 .s9 kuy 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 Co6r pk 7an4bcx; *sw+ioulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated tz)v kp + vnoiy6hg-58el36mc by a distance d. The first charge is larger in magnitude than the second lgn 3cv p5yiv z66okm)8hte -+charge.

  Sphere A carries a net charge and sphere B is neutral. Theyk)-/ 2uelvaob njq4jr ,9a xb9 are placed near each other on an insulated table. Which statement best describes the electrostatic force beoj-lkav 249bb9ra,e qn jux )/tween them?

  Two charged objects attract each other with t0 d 07gkcd8naa certain force. If the charges on both objects are doubled kdcda7n 0g08t with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fo1lah ,q 2n,eibrces of F on each other. If the charges are separated by a distance oe,balh2nq,1 if d/3, what are the new mutual forces?

  Two charged objects attract eacv1j47su5 p 0vxz(dcoq k ,6ow aeyr/9twqs/8 gh other with a force F. 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-fouo0s8k p9 ( dvcao tzxg/j1 v5u/6r7y4s,wqqewrth its original value? The force is now equal to

  An electron and a protoe))mpza;/an d ,u4ekyn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n/nde a p)u,ke)m;zay4 ext to the first electron?

  An electron and a proton are separated by a distance of 1.v6vllp)u uyp1ko, *( l0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton? pp yv*1u)l (6k,louvl

  An electron and a protoyob ctrg;mq: 69spq-4n are separated by a distance of 1.0 m. What happens to the size of 4;pcgq- 6r 9m:qsbtoy 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 square. When a second poin )2qak4 vf2iikt 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 the magnitude of the net electrostatic forcef2iq2vki4) ak acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an e69g u /a/fx jep zij/f j)kmf)c:k)2k;jv:hyequilateral triangle. When a second charge of +Q is 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/v i fk):kuxjgp f)a:j/hm9/2jc 6yzje;)fek to a third charge of +Q placed at one of the other vertices?

  Which of the followingun x +ike-u2e: is not a vector?

  At twice the distance from a point char3hh y2ckptkb/h4kc 22 ge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative f(e8 xtxubh5/ and positive charge along the line joit5e x8ubf x/h(ning the two charges?

  Is it possible to have a zero electric field value between two positive p n ufch( ilah28+u*(pcharges along+upih(*(a8hlup nfc 2 the line joining the two charges?

  Electric field lines near psitive0x: 8fo 2v39:bx 6/z8q zzdgz 2ahtxonlu)bc u point charges

  The electric field shown/ lqat+zo3ux2

  Can electric field lines intersect in free spazc t/)- 4a.isjrxney(ce?

  A solid block of metal iq *h h/dbg akdmk:c,gc68l)* in electrostatic equilibrium is placed in a uniform electric field. Give a statementqc: a/lgd,ghikm)6k*8 *d ch b concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g5mja-z8n k3jtbx 2*nbpot ,z.iven the same charge, the electric field (E) midway betweenno tk z*. 5n3j,m2jp-8xbbzt a the center and the surface is

  A cubic block of aluminum rests on a wz . scs4d zbry45 t)ky(wgar;,ooden table in a region where a uniform electric field ;g rsac4. dy)t5,r bk(zywz4s is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostati ncfkufx fhko2go7:(;k 0j9w4c equilibrium near an electric charge

  A positive point charge is enclosed in a h4wr7 )d bs6pgjollow metallic sphere that is grounded. As compared to the case without the hollow sphere, thj6 4 dgwr7bsp)e electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibz1dk *wyo s/i6rium.

State Gauss's law.

  The charge carried by one electrong /ac-x)uo sk9-jyzy- 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 than ele8+85kaek qz viclej34ctrons does this piece of plastic havqzk3 li5848jc+ ev aeke?

  What is the charge on 1 kg 2pv j os)ke*k6)o,(we6vqccuof protons?

  An atomic nucleus has a charge ohyohsk83mf2: gm wh97 f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated+.0gu7jkymnsj xc81vg j*6 tr7+ ipvq by 1.5 cm, have charge values of 2.0 and -4.0 mC, respective16g.i7q u0j*jcpsny+vj + 8 rgmx7 vtkly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m frkp;a1/f mz z2qk f1-ehom a second charge, and the force between them is 1.0 N/eapfh zq;21m1zk-k f. What is the magnitude of the second charge?

  Two 1.0-C charges havejzj i0h8:zikd ,ofr;ic365 uz a force between them of 1.0 N. How far apart are they?

  The force between a +kjhf3cu lo:-a9al7 u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia8(h vl7(cl3 be6djrqtsr l/w ,lly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwe( v/8bwdesj637 h,rr(t cq lllen them?

  Three identical point charges of 2.0 mC are placed on the v:c*b r))w;jsf7tpre 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 thec; r j*tv7 ep:)rsfwb) electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge)v*ch lo-3s8y2h.lk )do 02 r*v ozflux, qmnf 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 ori,c.zlkodvfx lhfy mso3- 2 * vur h0ol2qn*8))gin?

  Three point charges are locatetz2- yn4;u wqyted9bqov:2q-; z9g xf d at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at wx tefqyu-qqt9 o -d92bvny:;g42 ;zzx = 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 +Qt8av.inc yrkjgz:1 37(rmyu . is 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 positia. m1. ( v:j87gnckztyyu3rri ve charge at the 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 = -15vl zh t7lp)h6.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of th p lh65vtz)7lhe 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 j6yl w:br(pg+.0 nC is at (0, 0). What gl( pw6b+r:yj is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at gybaqdcibe8u,5qb1- 67 c :uqthe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wc87, 5a e bu6b:qdy 1cqgb-iquhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are/ni)bjdc6wya5 5ua, q separated by 3.0 m. At what point, on a line betwej)qd5 ic6ay au5/ wnb,en the two charges, 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-C charge is at x = 4.w0m63u/ hac 2b0m4 buczw6zve 0 m. Where on the x-axis can a third 3 0ambcwc2z4hwm/u vu ze66b0 charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chay*q-z*v bha-jjtidmli7 29 5qq3 kfb;rge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force*kql 2mv fa 7i9-*jtq qi3j-d5ybz;hb on it is zero?

  A copper penny has a mass of 3.0 g.tg4s qps54lks3m e(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 aga c dvw14fz52ckinst the force of gravity by the attraction of a fixed proton some distance above it. How far 2zv 1cdwf 5c4kabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pa/r,7 y g0pihdoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between therpdi0/7 gay,h threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e.ng 1+o o-a*qai ek0d72ugnmd) What is the magnitude of the electric field at a distance of 1.)d dn12*ke0-gag7qmo a o ni+u0 m from the nucleus?

  What are the magnitude and direction of 5tkk8:zie5c rthe electric field at a distance of 1.50 m from a 50.05ktc8i 5r:zek-nC charge?

  A 5.0-C charge is 10 m from a small test ch5yn )0ae5ucpl4tx 6iearge. What is the magnitude of the electric field at the location o uy6)ixl5 ta5e pce0n4f the test charge?

  A 5.0-C charge is 10 m from a small test charge. What yp o- z9l1kxv4ha) q+zis the direction of the electric fi)a9qp+-khzyz 1 4voxl eld?

  A 5.0-C charge is 10 m from a small test charge. Wh .jsjur9i,fd 3kpiw)5s fhkvl:a.:8 tat is the magnitude of the force experienced by a 1.0 nC charge placed at the locas.r d ukai:)w.9,fj85jktf: s3phivl tion of the test charge?

  Two point charges ea j6h/cvzu1wr5ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chwuzc65 hvr1/j arges?

  A 5.0-mC charge is place +zw ruqsxvh b*1k83a6d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3+ qbz*ka8hws6x r 3v1u0 cm mark?

  A 5.0-mC charge is placed at the 0 p 8c3 o5wj +)mfnm-igvcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point omm-ipwn )8cv5 3foj g+n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC areo)rv t.t 1e9c dzoc,;q43z .bqq zvds( placed at x = 0 and x = 0.20 m. Whatztqv;o)1zc (br.9,oeq dzdq tv.4 sc3 is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corneij7pr* ac,ic0 rs of a square of side 0.50 m. The last corner is occupied by a ic0rai*c7,jp -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners)gl ,,k3xhoza2gb 8 -mc9.dixu6uds n of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0lkc nm,a3 ). d8uuh -b9oxgxis6zd,g 2 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 io du*)srma9v:8mntt )t is placed in a uniform electric field. What is the magnmdv:rua 9m8 )* )tostnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of 9s 9vmw;y i0kq$5.0 \times 10^{-3} \; kg$. 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/C po,wzepv qkd:+ .8 m-xpn*v9vyointing downward. What charge must be :v-p yp+8.vvm9n*xoweqzk,dplaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charto(qu43xx dcqx7e/ z:ge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of (ezoq7/x3dxq cu4 xt: gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of+ c3 ;doiqtfg1 +2.0 mC. What is the magnitude of the electric field 5.0 cm from t1qgc+df to;3i he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.xfs*euoe7)7zil g,f9. y.lc gwjv, )v+v vi k- What is the electric field 6.0 cm from the center of the spher.7)9 seweg gvy+ )-v.j*u7fkclvz,,iif lox ve?