State the law of conservation of electri+ i 7h,)8rej jdqaq.r) umq;atc charge.

  Is it possible for two negatives. t4r *3 wxo33pdeogq charges to attract each other?

  Is it possible for a positive and a negative chargemjk03 mosik s x133v4y to attract each other?

  A glass rod is rubbed with a piece of s m1woye jhi:aj 48-o8hilk. During the process the glass rod acquires a positivhei 4m8oo8hjwj- :ay1 e charge and the silk

  A proton carries a

  The model of the atom kijzy hlm:.g9i s /ip34 bnt,8shows a

  A neutral atom always hc6jko,9 g 3k nwc0e7ao3ur w3mas

  An atom has more electrons than protons. Thly e m5ivl41d9e atom is

  Materials in which thv go-t-kw ebaq90n8 s/e electrons are bound very tightly to the nuclei are referred -skeo g9tw qn 8/0b-vato as

  Materials in which the electrons are bound very loosely :c kbw 7yx-ou.to the nuclei and can move about freely within the m-boy wcuxk.:7aterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b0cz+ +-mxc,ihxafg1p r u,vy.ar. The end of the metal bar farthest from the chai 0,-yzmxc, ph.1 +arucv fgx+rged rod will be charged

  Sphere A carries a net positive charge, and sphere B bwjgxwiskc :g qb1:* / xzr:;:is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemer xg *j/ xzb:1iwkq;w::g:bscnt is correct?

  How can a negatively ;v xy( 3ah+tf-j,ufkacharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positisjhrf.gr 6prl; :s. r1vely charged glass rod. The elecr.sl :rpf jhr.16sr ;gtroscope

  An originally neutral electroscope is grounded briefly while a ouw 8u+ no1sdd ;tco )y;xy;-wpositively charged glass rod is held near itu dudo8-;w;o n;owxsy) +1yct. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavesa- 9s. /r)g gxvony8wjve;w(+wd bkh5 separate. Then a negative object is brought near the electroscope, but does not touch it. What happenx)h kva.g ew5 ywvwo+rgnj(/9 -db;8ss to the leaves?

  A large negatively charged object is placed on an insulawjcw (b7w*xgn pdecb7/4o .h; ted 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, striknpwwd4*cb( hj7xgo wc/b. e;7 es 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 constanp 8ap.bts0;8 ik2jef9i/c hzyt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha3cz5pe+94ci . k)t eu; es8idht:mryvrge is larger in magnitude than the tp5mu38i4.+ ecsek ihvz) ty9r ;dec: second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placei+4s6 b0c wgmcxt0vfkji1+,w d near each other on an insulated table. g0ib0x+w m4j i+1fk,6 vtccswWhich statement best describes the electrostatic force between them?

  Two charged objects twrk5 2xj;alj2p5:*eizar( aattract each other with a certain force. If the charges on both objects are doubled with no change (atkl 25x5p:*arez w ari2;jjin separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fordnw m *46ile6bces of F on each other. If the charges are separated by wl ei n646b*dma distance of d/3, what are the new mutual forces?

  Two charged objects attract +vdw:8ts 9m ii/xap 8idddjpgc9 7y/ ,each other with a force F. What happens to the force between the/gpijtc+imyd9v8a,/ iwdx 8d7p:ds 9m 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 pr3f vtop21l+b noton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secp1ot 3f+ 2nlvbond electron is placed next to the first electron?

  An electron and a proton are separh-( yerh( 7vkh28(fxzfcjyw/ated 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 nehyf8wrc-vh 7 yex k(fh/(zj2(xt to the proton?

  An electron and a proton are2dfo.3eo5nzwbw(ue c m 4(qcjv+9x t+ 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 closer to the x(w+2dj4nm+zco eteqcb f5 .v9 uw3(oproton?

  A point charge of +Q is placed at the cent yxe0t1k 60eokp (gqguyg6:j4 er of a square. 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 ofq0k e60(:ujyk1go6 te xgpyg4 -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 placed at the centroid of an;a il3s q*h;jj equilateral 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 j3 iajqsh;* l;the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following i p2 ajz6 1:wjexv)s27 nwe5ifis not a vector?

  At twice the distancesjll; x*kpb65 from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwezq9dmzqh(. r. zk s+1j 6,hwgyen a negative and positive charge along t h.6rs mkhgzdz.(,y1z 9j+wqqhe line joining the two charges?

  Is it possible to have a zero electric field value between two pq+mlf or xj 4fj4tn1+6ositive charges along the +fmt nj61oq+4 x4frjl line joining the two charges?

  Electric field lines near psipslcji-t) 8tam. 04.4hfrjv/mlu x3ytive point charges

  The electric field sho(nim c5e al 51e9kb+wywn

  Can electric field lines in8gvbs8 m ;rv+y5hs dx,tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elelg4jiiatu jja(+m*zlp 2(s79ctric field. Give a statement concerning the electric field in the block's jj (uzm 7g29*a+isjplial 4t (interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gig6 x g 7ef1onz57musf5vefz 67ef5ngsu 1 5xog7mn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where o .phiwdel0e6 f48.tca uniform electric field is directed e h.fow6c8 i4 l0dpe.tstraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium w rac;-f-lkrb 4fjmz (u b)61nnear an electric charge

  A positive point charge is enclosed in a hollow 81hc yuft n+p0m01ozt th *8gpmetallic sphere that is grounded. As compared to the case without the hollow sphere, thgfz h8 p n tyo11*t+08tcmuph0e electric field at a point directly above the hollow sphere has

State three properties of p wg551x q989h(jtt *aqpkjmr conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrmer3 s (g6hgp()zej+ ron 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 aic5x bx( 8hk,v net charge of +2.00 mC. How many more protons than electrons i8x5x(ch bk ,vdoes this piece of plastic have?

  What is the charge on 1 kg of protons?/v*iwe hpll48

  An atomic nucleus has a cp-ugbmi2e 8h19svzdc /6vfpi8 4n u+pharge 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, havkhbzk(*kc,bhecm u.38 h ahzo :i/ l8(e charge values of 2.0 and -4.0 mC, respectively. What is the hz:b c,3zb8(h/.h 8umk ek*hlao ick(magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force befd i ,(m 5,:xip7inllctween them is 1.0 N. W,,fn:mixl(i pil7 5d chat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart qp9z0,5s08i vji.b 0p gikypz are they?

  The force between a eq gss0wzm1hj*+l-8 h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expfk8v4sqa(,ywn3vau y2zlk.) erience a 1.0-N force. If they are moved qa8 lka2)k,ysfwnvyu 3.4 v(z to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed p qztqq2w5wp8 8sf: j3on the x-axis. The first charge is at the origin, the second to tj325wppz:w qq8qst 8fhe 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-axisd(qjp4a 0sulr/,o u,i. 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 the magnitude and direction of the electro,qo,4uupsail 0/j (drstatic force which acts on the charge at the origin?

  Three point charges are locaxy42 kx-9iyw7xvam 3wted 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 force x7w xw2a3k-im4x9vy y on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point chaktc+h.4kdou ;fb -aw 00/tyhez t2on(rge of -Q is placed abf4n-tuh;2 t/a(0ko. t0+zd yk ho wect 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 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 (u) ol+6nbnxh (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 n )n 6hb(xuol+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 nC ion qpdb7 /npna ;9e:5rs at (0, 0). Wh/bdn5 onapen9;7 pq:rat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilab: il2jist3 1qrezdh)q,r t 74teral triangle which measures 30 cm on a side. What is the magnitude of r,j ):bsihier1l7dt z42q t q3the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, w h g*tn2bj wr8:5(mk*gqmf0b*2i qtx thich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge o 0 n:t*rth mmqktf*i*bwjqb5(xgg822 f -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 mp:0 ce i 1xpw rc5fj.dk/q-x,znj q7f). Where on the x-axis can a third charge be placed so the net force on it i 0w7jipq/e-n 1fz rkcp, f.xcj)xq: 5ds zero?

  Charge +2q is placed at the origi0; y eaoxlo yx rv1k5 *x.l*njicw+0r+n and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tx0wr+l*0 iev+co *;ly1ky5xarnj x. ohat the force on it is zero?

  A copper penny has a mass of: k n6x; q3vw8pku(bysea/u y; 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 aga*p8d bwmo-do+6p kv+ ainst the force of gravity by the attraction of a fixedp8o-*6bw+pvdmo +ad k proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondmai3 gtmpnx07+/6nk p o -qnte:4t px*ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsiqnmg tp0 x-6o ektta/ *:nx37pn4m+ipon 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 +40r5y tji,a+zmf,a v l+j3uw ka.u4c*28ji yod.e. What is the magnitude of the electric field at a distance of 1.. jk5om i+jjv,f 42cluu, aida.y3yzw*t8a+ r0 m from the nucleus?

  What are the magnitude and direction of *nq1xv:.asy mw e(z,nthe electric field at a distance of 1.50 m from a 50. n nwy*.zx amqs,e1v:(0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni st,rg17 0d.0az(ulrzw zy kw+tude of the electric field at the location of. (garwy7u,z+ skrl w10ztz d0 the test charge?

  A 5.0-C charge is 10 m from a small test charge. W5t 9 ffx*d4otehat is the direction of the electridt5t *9fo e4fxc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude z,;waw wrg4eq *bmm93uhzp 55of the force experienced by a 1.0 nC charge whwm*a3 ,p5z; bgmq9r ez5uw4placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance.tixmo, 46ihx45 rgso of 4.0 m. What is the electric fito6g4moh si.,4ir5xx eld at a point midway between the two charges?

  A 5.0-mC charge is placefvt1+k )fp 2fo0p)pc b; 5gqasd at the 0 cm mark of a meter stick and a -4.0 mC charge 2b;o0+5acf)p1tsfgv pk qpf)is 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 and a -4.0 mC chargdmg,3t9u-udb 4y+p 9iy p1cb pe is placed at the 50 cm mark. At what point on a line joining tdgpyi+b9 p bc3,uum194 - ptydhe two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedco/5st. t i*kbr1 urz- at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway ber- ir boz5st*t.uc1/ktween them?

  Three 3.0 mC charges are at the three corners of k0yflr l2x4+o a square of side 0.50 m. The last corner is occupied by a4+x yl2f klor0 -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. Chd,j zvr4tbi5zb( 3d6xeby8 q .arges 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 the squar,bd bv8bqr ( jz4ti6z.yx5ed3e's center?

  A force of 10 N acts -:mezs 6-lss3xuh oh2 on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this eu2hse3o6lz:msxs - -hlectric field?

  A particle with a charge8 jw;ofp 5 s /,,gw aeoj5m-swuy0hk-m of 4.0 mC 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 placeayim en1kfmh y, mlk4 6(.x5v*d in an electric field of 6000 N/C pointing downward. What charge must be4ni ,1(*5k hlxm6av ymf.myk e placed on the ball for it to be suspended?

  A foam ball of mass 0.15bt: 4q.(oy3(4w) k 8 df glmaszslwlh(0 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 magnitude and direction of the e) b:4fa s8(y.do lglw3zq(lw(4tksmh lectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magqoy*wk.r;r n .nitude of the electric fr ;wnqyrk.o* .ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm ca6 o 5x4atbshi.rries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spheras6.oh b 5t4xie?