State the law of conservation of lm:l6n vu.8 .m 7ssbzy.: ;za8agvaomelectric charge.

  Is it possible for two negative charges to attract eacxzq- +izall( hb7u7-ch other?

  Is it possible for a positive and a negative charge to attract each oti z2jlcvyt(xz pw2w.170r 8oaher?

  A glass rod is rubbed with a piece of silk. During the process the /szh6m wf:f h- ukeii hr,83 ,9ouwuq7glass rod acquires a positive chaw6qkwfuer uh/,s 9-78hf iu m3:hzo,irge and the silk

  A proton carries a

  The model of the atom showsa h ,uvkvxdj2q,ew58* a

  A neutral atom alway n 5+rik zaix5 nsh3.orgr4 n99ix68ufs has

  An atom has more electro-r lidas5r 6) d2wmbkk 0h4ctm3rjo/(ns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refewnqabda r)79-t -g-larred qt 7 ag-na)d- brl9aw-to as

  Materials in which the electrons are bound veryvdg 3-yi(vxen 9 b48(pkz;nxt loosely to the nuclei and can move a-t;i8n (9nvz x pyvbg(34 edxkbout freely within the material are referred to as

  A negatively charged rod is brought near one end ofkejqnzv k72ys n4v;)2 an uncharged metal bar. The end of the metal bakvsn e4ky7v2qz2 ) ;njr farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neapwqh +3)dzz :p.los fp5 (5gmutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groo(p.da3fq5s z m w+:)zglp5 phunded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po9rz 7bd0xcxmq l7c g0/-im ef+sitively?

  An originally neutral electroscope is briefly touched :,v3wpf on.s:z8f bmnwith a positively charged glass rod. f : 3nw.m zs:f8b,vpno The electroscope

  An originally neutral electroscope is gfw)* uftd 9yj8rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrufj)9wf yd* t8oscope

  A positive object touches a neutral electroscope, and the leaves separate. e:(c6sm9 8 lq+,msn7fyrwom j Then a negative object is brought near the electroscope, but does not nly e cmomr j6fs 7:w8,qm(9+stouch it. What happens to the leaves?

  A large negatively charged object is placed on an7/d)hp n+s -op qhtm;y2wgp4 d 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 the negative object. At no time does either ball touch th w s47pphgt;q)h m/yo n+2d-dpe negative object. What is the final charge on each ball?

  Charge is

  What are the units ofdo. j6w +kuhtrj/x m(0 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha. gzu t:wl*gh :,*gkvt;zp.es4qy ;sf rge is larger in magnitude than the second chvsy*u ,4qthz .wt;.*fs e gg:k:gp zl;arge.

  Sphere A carries a net cilboek)) 6dh 8harge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwk)d 6b) lehoi8een them?

  Two charged objects attract each other with a certain force. If the char h,9*kz .hvyfages on b.h a9 zkhf*yv,oth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert9;3w pjjo3se 7mlu4dm mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual f7 4m9w ojsdum3jel;p3orces?

  Two charged objects attract each opg3ob :k+wj, qther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the s,+w:pobk jqg3 eparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton st ) lk/,kbv8:uoc*ltu olv2/are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second eusv*t k,2)/8 b cvull/l: tokolectron is placed next to the first electron?

  An electron and a pr p+;s6dl/p1 sxred:v poton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electrons+del p 6ps;r1:d/xpv is placed next to the proton?

  An electron and a proton are separated by,ex ds pon9loeca( +2* a distance of 1.0 m. What happens to the size of the force on the protonca es (p2lxo9+ *e,don if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed r)mb m3lipw/3at the center of a square. When a second point charge of -Q is placed at one of)3mb / p3imrwl 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 placed at the centroid of an equilateral trapkk-7 ; 8a3rhdyuunvxruu :i d)z 1omu++ m-+iangle. 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 to o:uv+u zrkiah +k uxmuur+-m-d38;p)n71 yada third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector -y2cruai):a6lg. ieo?

  At twice the distance from a pointuqlfyqc;/*: xkra 8/vd*oa 9n charge, the strength of the electric field

  Is it possible to have a zero electri0rq4 oncuar)i53fu/ j c field value between a negative and positive charge along the line joining the t r)ri/ 0fjqun5oa3c4 uwo charges?

  Is it possible to have a zero elec9-0uk juh a3oq jkg8cynh9 75otric field value between two positive charges along the li8o09yu -hnhgk9qo7 5ku3jajc ne joining the two charges?

  Electric field lines near psitive poye 5th-h;bnk) int charges

  The electric field show/ ih76y/hks:uybmsl d ca6y,/n

  Can electric field lines intersect i1c+ 8 z;yvvxsux; s;lmn free space?

  A solid block of metal in electrostatic equilibrium is placeq:h;gj: as /ugtq,6 dfd in a uniform electric field. Give a state s6: g/qaqdjuth :;f,gment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersq(r c,vle 9i7s are each given the same charge, the electric field (E) v,r lcqs7ie 9(midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wl*1y y) lf.pqro oev*7here a uniform electric field is directed straight upward. What can be said cor .e1p) vfo*l 7ly*qoyncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nearu6 rde ) w7 hhcjyc(c4;5ggy(l an electric charge

  A positive point charge is enclosed in a hol pvnmury07( pno7,mv ,low metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere hav,my, (7npmnup 7r0vos

State three properties of conductors in syawu xwomn) o 9 1ju2g+e(:oz2tatic equilibrium.

State Gauss's law.

  The charge carried by one elecyt-: lm5+zowtd 0mb7h lv0 s5otron 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 charg d 5j-ys72mlxee of +2.00 mC. How many more protons than electrons dlxdme 7yj2s -5oes this piece of plastic have?

  What is the charge on 1 kg of prrr3l 6 cy)6edyotons?

  An atomic nucleus haxq8bh7h1bb o 4e5fv5r s a charge 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 of 2.0 and -4.0 ex071pe6- z7m6qo, 5mpd9fbmw5; wvpaiwnyj mC, respectively.fw,nizmdew9 6y 56pwmox5jm0 ;pb1a7qve - p7 What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m.21i qh+ lyb iz.aaw,q from a second charge, and the force between them is 1.0 N. What is the magnitude of the secondq+ 1lw2azi ia. hy.bq, charge?

  Two 1.0-C charges have a force between them ogofyg 7:+w n(df 1.0 N. How far apart are they?

  The force between a mdek ltee/3hz08;9h dc3lg 6h $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia6qk9p08wi y hslly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whwskqp 0h 9y6i8at is the electric force between them?

  Three identical point charges of 2.0 mC are plac.zv+.o*bawc ye o:f* zed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thi y *wezo.*f+o: abcvz.rd 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 +2.0 mC is p )pwy+egh8kh1c(fey abzq 2:5 zgt0e:laced 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 wht2:z e k bgw1yeh5(z yca0h:pf)+qe8gich acts on the charge at the origin?

  Three point charges are located at the following positions: r b o)b(kqzhvof0 h* f0 bhwk:hm 7xk+,v7zo5;Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x vhfhfoq+ x0m5ov:ko0zb)r,h (w ;77*k b zhkb= -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 a second pohuhs 1awhslo2ntge/g5x m3c *+.sl7 * int 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 censhxgsaet 7 *1.53w+oulm/hc2*nlgs hter. 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 o )m;gwij:f43-a j5.di lqi vjnC is at (0, 0). What is the magnitude of the net force;w .v54dio3gi ia)jjfl:j q -m 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); Q3ez- a/hsh4 +ns = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.h4/ -na+ss hze0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatersbvugy 3uth.3wb i )y1./c0y bal t wbht3b03 .y1/guy)us.byci v riangle which measures 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, which are separated 3b4 ,l-ws ki/ og0dh ckfs0vzr+lsa-+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 electrostatic force h+kcwv-z+rk lo bd-f/ 3s,0i4 l gsa0sacting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C c;,cu+jhr2 ,in ms+ny qharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero? n ,j+,2+isrhcyqunm;

  Charge +2q is placed at the origin -s7c6-xcz9o*nzcd iq and charge -q is placed at x = 2a. Where can a third positive charge +q be xzcq-c96 ci n d-zs*o7placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tns 2sti 0ppegalx1qc9 0,k1)motal 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 fon w3+fr /q,pw(lizl1rrce of gravity by the attraction of a fixed proton some distance above it. Ho nr( frwlw,3l1 izq+/pw far above the electron is the proton?

  Two 0.20-g metal spheres ajfxharp,w238v d dnded*b162re hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untin1 3xrpd6d,f2 dh ebd*aj2wv8 l the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a char(ms7dv lr;2fzg0 ja p0ge of +40e. What is the magnitude of the electric fip7sgz;jr2 m0l (0 dvafeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a diw-jby6 o;j,dk1zr t1juj (1m lstance of 1.50 m from a 50jd1 myj,j1l uj tk-b16oz(; rw.0-nC charge?

  A 5.0-C charge is 10 m from a smallbjmd260j as /t test charge. What is the magnitude of the electric field at the location of the test charg/ 6a0 bj2tjsmde?

  A 5.0-C charge is 10 m from a small test charge. What p7i0gr4o/ xr rg y1j5zis the direction of the electric fzp5gyr1r gjr 470/i oxield?

  A 5.0-C charge is 10 m from a small test charge. What i zf0 +bp;k:jf-ieyoob a-nq42 s the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charg-4ifoajqy20;e-+bob :kn pf ze?

  Two point charges each have a value of 3.0 C and are separa tu;yp( 7jat)3s3z-fq fntz /uted by a distance of 4.0 m. What is the electric field at a point midway between the tw-( ;y as qz zj/ft3t37)puuntfo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met z3kzhnf i:dp 9j2*2iqer stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm m2hjf 3qn 2*zk iz:idp9ark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0jp wi8 pr9(4le mC charge is placed at the 50 cm mark. At what point on a line joining48 (jrpp ew9il the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC.bk pml2/ c/w5rxqr(f are placed at x = 0 and x = 0.20 m. What is the magnitude of thkwrc l 2m5.pfxr //b(qe electric field at the point midway between them?

  Three 3.0 mC charges are at r6 h/m zsy)6df8ujnq4 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 field at the center mu jhzf/8 n)6 d6yrsq4of the square.

  Consider a square which is 1.0 m on a side. q.r8( j;xlj8x he 3w43xua etdhne6m. Charges 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 e uq(83wxnxjtxreh.md38 j6a4;el . h electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform h/+wf klx9uhjmm*8lfr1*ryp6 gn- 5telectric field. What is the magnitude of this electric fiel+kj*rfp 6 l9hgu1w r/f*5ytnl 8m-xmhd?

  A particle with a charge ouv0 z/ hs cej26eo9f+ h(0wfptf 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 placed in ayy*+0cbnvvbgp hlant;v 2/id/(o8a : n electric field of 6000 N/C pointing downward. What charge must bovvya +8y(cn2*:a/l bb ; ipdgt/h n0ve placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b4sf e,nw;)k gu-dg3hyall is placed inside a uniform electric field, and is suspended agf;e4yd hgkgn-,u)s 3wainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chalfr j)k*hwl,p6:s 5us rge of +2.0 mC. What is the magnitude of the elrj6ps5su l ,w*f: kh)lectric 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 is)wkw/c05fdv w82nqe s the electric field /0qsc8wf 2 w)v5kdewn6.0 cm from the center of the sphere?