State the law of conservation of electric charge7gka1 k) erd vu*qo;wir ep(:/.

  Is it possible for two negative chp3yfg y1 sg0e-qwh1hqs )f 9o4arges to attract each other?

  Is it possible for a positive and a negat6khi 4eyb bu/w u+tlahk46*)y)svds)ive charge to attract each other?

  A glass rod is rubbed with a piej6mii8nnjpmy jkvvt0 hgx124r (2.i6 ce of silk. During the process the glass rod acquires ak6 x0m jypmgtj4.i8rji6nvi ( v2n2h1 positive charge and the silk

  A proton carries a

  The model of the atom showpp v3h))l hd8)gt)yf hs a

  A neutral atom always hag8c;u l3/3oj al:ztk hs

  An atom has more electronsp.:eig2*)a myszy (j q than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucle,b f d/katqpv+:n52 wei are referred to nabwftp2, /kq5 v +:edas

  Materials in which the electrons are bound very looselw8:9, m 3 cxlxf: gyxkv)qaei3y to the nuclei and can move about freely within the material are wx, 98 3cma e3xig) :kflqxvy:referred to as

  A negatively charged mjs jx9i(a(a.wy ):ir m7e t/equ mb54rod is brought near one end of an uncharged metal bar. The end oyw9( um7.j5j t(/smbiam)i4rq ax e:ef the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge,;s dtkp5b,tsit p/(t5 and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thi(tp5 t btd5; p,sts/kat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p3 hqui :3rlri)rd(y35fk; /p nsv6uq zu3a6 dsositively?

  An originally neutral electroscope is briefly touchevigq7;mq4 :ymd with a positively charged glass rod. The electrosqviqmm4y 7g; :cope

  An originally neutral electroscope is grounded briefly while a positi1w/ajpb7;t g fvely charged glass rod is held near it. After the glass rod is removed, the electroscop b;at71f jwpg/e

  A positive object touches a neutral electroscope, m20azgc2j3-to0 phf ma/j7 vzand the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thm j3zc/oav gzatp00f 27mj -2he leaves?

  A large negatively charged object is placed on agm6or+ lb7 ax0n insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball r r+l 0m7xbgoa6olls 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 o9,f zzves/jark3 6,xmf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by huuqev+129st a distance d. The first charge is larger in magnitude than the 2h1qvtu9s +ue second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed rn,d/ y 0soq )w9.dydp (-dlrfnear each other on lp-, s )/. (wrd9o0dfdnyrqdyan insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ceo0mp)iqhyd h jpilm4 w/9d -12rtain force. If the charges on both objects are doubled with no change in separation, the force betweenq wo- dljh9ii/21 p)ydh4p m0m them

  Two charges are separated by a distance d a 5 )efe6xjh.(y5ssmuj:o pm/bnd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what /mm sb.yo6 e5)ups5 x(fe:hjjare the new mutual forces?

  Two charged objects attract each other with a force F. Whaoty,uk9 a;w2vjpw f 64t happens to the force between them if one charge is doubled, the other chargf ;ut,vk69 o2w4apjyw e 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 proton are separated by a distance of 1.0 m. What happkx ,fvc *z3an;ens to the magnitude of the force on the proton if a second electron is placed next to the fiz fx3v*k ,c;narst electron?

  An electron and a proton are separated by a distance of 1.0 m. What:hqe 9p:w dzo6sm0xs+:aj de: happens to the magnitude of the force on the first electron if a second electron is placee psd :o z ::6jwxsea0d+qmh:9d next to the proton?

  An electron and a proton are separated by a diw1ik-4 mr 8lbtstance of 1.0 m. What happens to the size of the force on the proton if the4imr18b tl-kw electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cen (d7i0lcbxzlpfxj kg: z8ob5+q* pa97 ter 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 of -Q are placed at the other three corners of thpja0+8z79b 7g*b:lopxfcl 5 dkixz( qe 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 l-k)hvm8kt6k ki(q73m9sgk: yy.cniplaced at the centroid of an 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 the center charge due to a third charge of +Q placed at o) m.c( -ykl6tmy:qig3k89s7 kkhv nikne of the other vertices?

  Which of the following is not a vgn iv d1v+os; 3(y-,d bz+lxuhector?

  At twice the distance from a point charge, the strength of-ab 9j 5:cscoo the electric field

  Is it possible to have a zero electric fieljc6gk k/ce (.hd value between a negative and positive charge along h(6.c/ckk ejg the line joining the two charges?

  Is it possible to have a zero electric field vaajal*nx+6 bb 9lue between two positive charges along the linlb6+ax n *ab9je joining the two charges?

  Electric field lines near psitp)i:dsp mc47c ive point charges

  The electric field shdjub,mvl ) geepv52 s.z4x c(0own

  Can electric field lines intersect in frel)aoq zl +);le-mkq5 )p. olzqe space?

  A solid block of metal in electrostatic equilibrium is placeme ddf +q:r*i z+ /(eb8pyxk3nd in a uniform electric field. Give a statement concerning the electric field in the block'i+ ey d*:(nrdp/x m3 qfeb+kz8s interior.

  If a solid metal sphere andvt+.t)t ivy97 jqayi 7eyh 8i/ a hollow metal sphere of equal diameters are each given the same charge, the electric fiel )jv7 y t+/t78aihyeivt.i9yqd (E) midway between the center and the surface is

  A cubic block of aluminuy ,f2v;gwoziu 31e6awm rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge oyoz61e 2w3 guivw ,a;fn the block's top surface?

  If a conductor is in electrostatic equilibrijlmg8k kkrx3cbf l:nc* +a00, um near an electric charge

  A positive point charg3h bze6ku m8*ne is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dbnmzehu 3*6 k8irectly above the hollow sphere has

State three propertie/o + j a0+2wm6dkkkhdis of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is l:fj+9i0; r qs: gfbob$e = -1.6 \times 10^{-19} \; C$. 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 protoprr 0*f9 ry7 +kjga+fqns than electrons does thip qj09frr+ fr+ga*k y7s piece of plastic have?

  What is the charge on 1 kg of protons?(5yhcz-s z ;- j fjsu-erx71qb

  An atomic nucleus has a(2 r y8kbmk3-w3qqmhi 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 2h:6 r(-onwuc5ju)0ew niyd: z.0 and -4.0 mC, respectivz )r :oucu wiy6d -5en0hn:(jwely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charonx 2fu uy(8d5ge, and the force between them is 1.0 N. nxoy8u 5u2f(d What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are zkxdcbxf*. - 9they?

  The force between a fy+gwnskf,c q+g; 6-f$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force.p3; gevs uh :8ywql5/x If they are moved to a new separation of 8.0 cm, wha5 ;v:8ps3xyh uelq/w gt is the electric force between them?

  Three identical poinliy zcy;u. w5r/ml55d t charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, an;/5 crwz .yyd5 lm5iuld 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. b)d+v3 i2 h9lfv(u h lw1l6tauuk ,os/ 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 direcia6t 31vb+flk/o usv (lu9)h ,dh 2wultion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located1pp;c/n9ouqb :le)y z 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 pz q) pye:n1c;bol9/u = -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 ce utx7l-l0.s:- f 2f;c iuvfwfwnter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observ0uff-ffsl.-wvu 2;7w t lcx:i ed 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 (0, 0.10 m:qk4+g r*3yjdyfbm+r w8 4 rad); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.04f:4dbqrm *ygar 3jrky+8w+ d nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = p d +yevd4th1*5.0 nC is at (0, 0). What is thed d4pv+*ye h1t direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertic;auojqu ow go.z3 )(9hes of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic u oo.jw9) qgha z;3ou(force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3dko+s4la 7hnx y kay03)+t1mx.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 fohxym43t 71okay+dsl0ka +) xnrce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charg)i*g w7o )rv5isg*mntq gkb, .e is at x = 4.0 m. Where on the. 7g *qmvi)rggino,*s wt) b5k x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin iy (l70dra 3xmw /la6gand charge -q is placed at x = 2a. Where can a third positive charge +q bga3i / ( md6lw0yx7rlae placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totbn326 wiwm u7eat0j2wal 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 al5uc 5.4r5f/6m oczydj dtdf,;9wv yp fixed proton some distance above it. How far d/o 6d,cf5w;5c.m z9t54rfu ljyydpv above the electron is the proton?

  Two 0.20-g metal spheres are hung vf0x*ue ign.ta60* jc from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsionn00e6cv.ja* ut *f xgi 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 +40e. What is the magnitude ou8jmt he1dme6i m4f6-f the electric field at a distance of 1.0 m fu1m-4f jde6 e68mitmhrom the nucleus?

  What are the magnitude and direction of the electric field at a distance oamy98ubqho;l9 / ph1pf 1.50 m fromlbmyhp1h;q 9op a8u/9 a 50.0-nC charge?

  A 5.0-C charge is 10 m from cyf9m ixz 5u97f1rv7ga 0udp8a small test charge. What is the magnitude of the electric ff 1u87099am 7cg dpui zvx5yfrield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio +(ci0 6qxsmmp ww:qu:n of the elecxi+mu: :06s pqmw(wcq tric field?

  A 5.0-C charge is 10 m from a small test charl5 dncn3x-x gy 6(f7rlge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location ofrl l dx 5g-3fc(7ynxn6 the test charge?

  Two point charges each have a value of 3. b)4+a-cy zckh/rhad20 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweeh/a)2k zh yr-db ac4+cn the two charges?

  A 5.0-mC charge is placed at the 0 cm ma:pomwdj8 hl l0l8z p ge+x:*/krk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the d:zekp mph8:x0lllg+jw/ *o8 electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cqk9 t h6a0g,3 e9rka bgtm+5exm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a3m6 hak+9g5ek ag,erx b0qt9t line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 mkv27 b juji3t4. What is the magnitude of the electj24 v73ujbki tric field at the point midway between them?

  Three 3.0 mC charges are at theg u2s2+ umno1eh3wai xwd3,)v three corners of a square of side 0.50 m. The last corner is occupied by a -3.3i2+wsax 1hd u2wm ovnu), ge30 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges aebu wdz 7d+kbi4(g*9are placed at the corners of the square as follows: 4abzd +edu( i7kb*gw9 +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 aghhsde2fdf75pz ):c;s fuc+y 4 . v5qb charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudecspde yfg5h:2q.v+ b7fs4)h dzuf ;c5 of this electric field?

  A particle with a charge of 4.0 mC has a ma;tl,cn4gz s)rlx7 ia 1io2ti 9ss 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 0.120zpb-,mey yk +4 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fkz+,b- e ym4pyor it to be suspended?

  A foam ball of mass 0.150 g carries a mk 9,*cd xkf2xcharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of k9xcxm2 f *d,kgravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge 0y. t22c tr ykt(rrl*pof +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spheret0r r r(t.2y*kt2cyp l's surface?

  A metal sphere of radiuscp54 zhaw.z/v4 sdoh6 2.0 cm carries a charge of 3.0 mC. What is the electriz zhhd.va544/p o6cws c field 6.0 cm from the center of the sphere?