State the law of conservation of electric chargeakb 6iobg62( k pm9to99 b4qpfo+-yvk.

  Is it possible for two negative charges to attract each op:xf(bafl6 / vther?

  Is it possible for a positive and a negative charge to attract each ot+9*iw w(uktydher?

  A glass rod is rubbed with a pitv ha:- .) 9tdu2r5wiqb k/mlwece of silk. During the process the glass rod acquires a positive charu bi-ktvd9whr la25.w ):m /tqge and the silk

  A proton carries a

  The model of the atom shows a, 256jzbk-qgh7/ t hhdlm1w bc

  A neutral atom alway 2a1skflpa 4e rl5y/e,s has

  An atom has more electrons t1g6 j4iuxzgwe(pr,c +han protons. The atom is

  Materials in which the electrons are bound very tightly tzbw53uf)dc k+ o the nuclei are referre5 ) k3zfcbud+wd to as

  Materials in which the electrons are s33niv) zu;e0 sd :ndjbound very loosely to the nuclei and can move about freely within the material are referred to annv0e usisjd;3:d) z3 s

  A negatively charged rod is brought near one end of an uncharged metal bqt-wir xr3gd cy0owc*44: v+v d fj9d8ar. The end of the metal bar farthest from the char4dc:r8i d*yovf -qdjv ww0 43t+x g9rcged rod will be charged

  Sphere A carries a net positive charge, andl-fc1 hj buyft)4i1 .l sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gr4fcuh.)tl 1 y-if jl1bounded. Which statement is correct?

  How can a negatively char;osp lene-7 j:ged rod charge an electroscope positively?

  An originally neutral electrohty.5vng9f6 e +cyvrtc21z 4nscope is briefly touched with a positively charged glazct 952+hrtn6y ce vvgyn1 f.4ss rod. The electroscope

  An originally neutral electroscope is grou,z; fd7c4xk cnjgti( pt*l,qz afm ,8-nded briefly while a positively charged glass rod is held near it. After the glass rod is rtixtzd*cgp;, qa,m n7( j8fc z4f-,klemoved, the electroscope

  A positive object touches a neutral electro s1e)l8:; jg ebst1kncz* yz3yscope, and the leaves separate. Then a negative object is brought near th;y z c:tsy 1*n81)s3jblkzgeee electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 0xf8nzly: cvci ;/ei/s /,vyytable. 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 the negative object. What is the final charge on efe yv /vc l/08yi:/z;c, nyxisach ball?

  Charge is

  What are the units of cgk3h9 jv25 prhicd4l:r7ly1the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Theqi vq241sxtsd05zel9n + o 7rviip+8b first charge is larger in magnitude than the sec7++02tbe v8 sq1zio5i pivr4n l sxqd9ond charge.

  Sphere A carries a net charge and sphere B is neutral. They lw(hbo,i 25iib5bdg9 4 ye3be+.m mjm are placed near each other on an insulated table. Which statement best describes the electrosd,bi4 ymjob32 i eb9.+imhml5gw5b e( tatic force between them?

  Two charged objects attract each other with a certain force. If the cham+,v r/, veghql1rz x:rges on both objects are doubled with no q+h,, 1vr erzv :g/xmlchange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attralhnao1 asjjib0/p6+ /ctive forces of F on each oth0l/hs1b o6njj+ /piaaer. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th4)tagw7 *pipve force between 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 forcepva4)ip t7*g w is now equal to

  An electron and a proton are separated by a disj2nzodk*wk+ 7tance of 1.0 m. What happens to the magnitude of the force on the proton if a second en *zwk +7k2jodlectron is placed next to the first electron?

  An electron and a proton ar7i px aunj.bp/2e3,+ scqbic- e separated by a distance of 1.0 m. What happens to the magnitude of the force onjxn p7 +aiseq .,2bc/bu -i3pc the first electron if a second electron is placed next to the proton?

  An electron and a proton voffj8+0b 5e 4(,dudfpmjif8 are separated by a distance of 1.0 m. What happens to the size of t +dom bv4 edjijp 8fu5,08fff(he 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 x y vnl 404/ur5da)pqkcenter 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 squarenq/vx5d ury 40kpal4 )'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 h6 op/2uax, xi :+*r1hyej mvncentroid 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 theo irn 2u :+,hxv he/*1xaypjm6 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 ve+ ve:gwzz 6p2a6f.dx pctor?

  At twice the distance from a point charge, the strength n xwx pnj2,fdk2:r66dof the electric field

  Is it possible to have a zero electric field value between a nehg.gxnfw 2w y esnc(:3wz9x8( gative and positive charge along the line28n: h9wxs3eny.fgw(x w cz(g joining the two charges?

  Is it possible to have a zero electric field value between two positive ci1u q(cz+wd+g uh74v0dd;ttoharges along the line joitutduhg4zo ;1di( q0 vw++cd7ning the two charges?

  Electric field lines near psitdd/ (7c e 7h ux8qp4f.q1uuvz1nrs;yw ive point charges

  The electric field showb3iszb6 t0uc,a0o hd 4n

  Can electric field lines intersect in free space? 5cyqb+qd 8p (,rf;ybt

  A solid block of metal in electrostatic equilibrium is placed in a uni,n k+f4f5oo bkform electric field. Give a statement concerning the electric field in the block's kn5o ,kfo +f4binterior.

  If a solid metal sphere p rxge*nzd;(gfnnn.gm5)(v 1 and a hollow metal sphere of equal diameters are each given the same charge, the electripn dx) n*mv.n;(g gfg1r ne5(zc field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden taj0pqbrq p7s d.(e(,ewble in a region where a uniform electric field is directed stpb( w7edqq(rje0, p. sraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibril(oiwta ks.2we;8a1 1y uz:xcum near an electric charge

  A positive point charge is enclosed in a h9l4w:( ) elnqndyvrv8ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electdnv 4l(8: n lreyw)vq9ric field at a point directly above the hollow sphere has

State three properties of conductors in staticz(+qls+j06..stv 7mcx aa scx;p kb( p equilibrium.

State Gauss's law.

  The charge carried by one electron issmr4.n 1(44r(sqe ofszchrs2g p.y* d $e = -1.6 \times 10^{-19} \; C$. 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 thah n-8ibdy*kd3 nm**vgn electrons does this pdknm* bidn-*y 8h*3vgiece of plastic have?

  What is the charge on 1 kg of protonsp-c z:u)5 bpcm?

  An atomic nucleus has a charge o1p4+ 4spg al/j/di+tsda ajxg -i 9*ylf $+40e$. 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 -gv(t dbw nvmc0:+vq 104.0 mC, r (dtg00vv :vn+ qmwb1cespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from ef6 xntb,nz *0vu* fi:a second charge, and the force between them is 1.0 N. Whate,v6 tf fbnnxi* z:u*0 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 the+16)bki ziixo y?

  The force between a zf;lwjz3d(dsp* t 6, z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc(dwdbx) .+p yud;2+irs 2eu nwvzr5*re a 1.0-N force. If they are moved to a new se).rsvr+(bp5i nud2wwe2x; y+ d r*uzd paration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.kol62 l8co*9f/ie fmx y1 w/nsm0s;sh 0 mC are placed on the x-axis. The first charekl;091f/fo cms* olw nx8sym2i/ s6hge 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 the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thei)x-tkc,e 5 pu x-axis. 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 mag5p )icxu-, etknitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follkv ro3s n-it)9.alz6(k:kxsdowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =.k3lt ns6doar)k-sz9:k( x iv -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 squarozw2pbl6 nea5sdqw/ j3 ip938e, 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 positive charge at the center. What is the magnitude of the force that acts on the center charge 9 l 3si6/w nzj5p b8adoew2qp3if 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, la,j.r88 n c/vnnjdqqvm nwv4 1*- )kg0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude d1n- kcv.l q*wnmjq nv8 8n,jg/4)rav of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -( vpcn+bw., jh1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction p vwnch.j+b, (of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thej/-;-jl ta)gl2z0 vwspy 0osn vertices of an equilateral triangle w-gjn ;lw s/tvy20spa0 o)zj -lhich 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 lhwybxfzcb.9r:1no.gi8yaac/ * 6 ,w, which are separated by 3.0 m. At what point, on a line between the two chlg1cy*9w b ho6wry8z ,.i./a af xc:bnarges, 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 = 4.0 m. Where y ,lhx1 8iic3von the x-xivlh3 i81y c,axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed atvt72d:bjjr7 7- amcvonwd+)r the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the -ro7cbw27:d) mvdjta v7rn j+force on it is zero?

  A copper penny has a mass of 3.0 g. A*thhzr*0z 38- vfnwwo 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 tc uc0ocb 0s4,hs7rw1k3w8 cqxhe force of gravity by the attraction of a fixed proton some distanceux r cw8csb,14oh qs7c3ck0w0 above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are 1f488 g+euyou-ss a+an mh/ju hung from a common point by nonconducting threads which are 30 cm long. Both are given idenny 4a+osu-mujsg88/ ef+h1a utical charges, and the electrostatic repulsion 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 is860;cc i- oc j avw4fvelmo4:g the magnitude of the electric field at a distance of 1.0 m from thcl fvw6;oj c4 ae4ci8 0mgvo-:e nucleus?

  What are the magnitude and direction of the electr d(w g(rq7whk5n fx5b9 9cw-vmz:fgn )ic field at a distance of 1.50 m from a )9wwnnqvr c :h (5f-bgmg5d(fk w79xz50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chartdq(+ j ho68nznw0 t.jge. What is the magnitude of the electri 6hownj8 (qnz+t.0j tdc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. ),da,fh9 z dccWhat is the direction of the ecdf,)d9 c,hazlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f-phhz7 psv.7 xorce experienced by a 1.0p . -hszxvh77p nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a disttj+y(cppg r5 6ance of 4.0 m. What is the electric field +(j6g5r ypctp at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0)a58+8 z vabq w6bgn,tdowb/v m)z1 ux cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm markw8uw)61ax)bg b zdta/b58 vv,z +qomn. 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 cha c*xbu -d+u+ezrge is placed at the 50 cm mark. At what point on a line +ex cz+*uu-db joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at tjmjy,i 5 co*x4jgn/,x = 0 and x = 0.20 m. What is the magnitude of the electric jog j4nyxtc,5 ,*/imjfield at the point midway between them?

  Three 3.0 mC charges are;n6,toi(teh 5q,qy/d pj kg m7 at 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 of the s d7/ymqn 6q5p k,ttg(oj;i,e hquare.

  Consider a square which is 1.0 m on a side. Chargbe+ 7bobz ld(*es 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 th(de7ob*z bbl+e electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whenj ei; yq e.laj eb bndji/7./i7(iiy40 it is placed in a uniform electric field. What iyeni; b e.qd47jl(j.iyibj0 e/7a/ i is the magnitude of this electric field?

  A particle with a charge of 4.0 m 1:5 to p-zz6mg4vb5h 04ciixxzyhp -lC 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 mayx wqiegm,6 ),u auoacv2*p 9*ss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be2m*9ig ua),avwqopx, c* y6ue suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p:7uym2n59mqt wv xjj,laced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of79 2,jynmqtum v:x wj5 the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mado0ttr x6amc,1(kbvs ,x/ewc zy 9d*3gnitu /m(rx6cea3 x,dvckt0d*1w ,szbt oy9de of the electric 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 the h7 gjir:w9zy1electric field 6.0 cm from the 97 r:ijw1z yhgcenter of the sphere?