State the law of conservation of6pptc 9p7e4fn aie0/a electric charge.

  Is it possible for two negative charges to attrasd-o x3i f(haf)dp37eavga /)ct each other?

  Is it possible for a positive and a negative charge tor ,ex3.mif)(w k ws7si attract each other?

  A glass rod is rubbed with a piece of silk. During t z-,5ltqj vuu;he process the glass rod acquires a positizluj-u5q vt;, ve charge and the silk

  A proton carries a

  The model of the atom shows a+f9tq6ul -+lw) nnsgc

  A neutral atom always 4kv 9xk:71i.nz/ xxlx 1opbnwhas

  An atom has more elec/pxd8s+u z5jub 26zb.oqh8ek trons than protons. The atom is

  Materials in which the electrons are bound very tightly to tz vbrvwdy5/ *,vlz6n9 he nuclei are referred to a/5rv6 *vz9 zvwd,ylb ns

  Materials in which the electrons are bound very loosely to ll 53g.nhc1 tj:a,bas0m v6zathe nuclei and can move about freely within the material are refer msalcj6:bz0 3.h1n gltv5a ,ared to as

  A negatively charged rod is brought near one end of an unchaeaxv. :z*j9tl at/ jh16adpv*rged metal bar. The end of the metal bar farthest from the charged rod will be chj *d6x t/*av9aj:ve h la.tp1zarged

  Sphere A carries a net positive chargymqgby2an: 3( i 9atr8e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brb9m2 qt8yygn3:a(i a riefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively u(g/w8/ghr4sn hs 2cw charged rod charge an electroscope positively?

  An originally neutral electroscop:xjr utiv /9b kdw65-de is briefly touched with a positively charged glassr xvk:5udtb w/j9 6di- rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positive e 3/tpzlw):wgly charged glass rod is held near it. After the glass rod is removwz3/ pw):el tged, the electroscope

  A positive object touches a neutral electro4-n)pigkhum r exe v.3ux185wyq 0d.wscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happensg yq4-e.pd kx.r1u )nhewi0u58mw vx3 to the leaves?

  A large negatively charged object ie /z t:q 4kbqncv1ubf5 -o4.kxs placed 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 the negative object. At no time does eithez4k14t .q o/kbq:nb-ex5fcuv r ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of ,s u ln)opqb)7the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by t ni2t4i24ihk a distance d. The first charge is larger in magnitude than the secii24k2 it h4ntond charge.

  Sphere A carries a net charge and sphereg f;; xstue 3tbc,x wa9gl3x46 B is neutral. They are placed near each other on an insulated table. Which statement best describes the electros xt3;,; l3efxtwg casgb6x 4u9tatic force between them?

  Two charged objects attract each other with a certain force. If the chargp2;nwb-/yktf c.up8az5 rco (es on both objects are doubled with no change in r. tpf by5- k;8o (ncp/a2uwzcseparation, the force between them

  Two charges are separated by a distance d and exen6a g9lc20-bk5,eb thnla bn)rt mutual attractive forces of F on each other. If -l), gen65hnbl2at90 nkb cba the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eacsow+(c0 +y zreh other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and thow(zs0+ r+ycee 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 happens to.)wk bzvf:/7wkul k6 ca5bff5ts.mb; the magnitude of the force on the proton if a second electron is placed nextu7f:kb/5wbkkfc ).mbs5f.azv6;tl w to the first electron?

  An electron and a proton areu(jc6g :;gu*cq .;a(jb tzqd g asr4y1 separated by a distance of 1.0 m. What happens to the magnitude of the force on the sj q;.gazg u:q ca4* cbrg;j(uyt1d6(first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.k;/z4yu .c0, bhj fiav0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closeubh /04y, .cajk;fivzr to the proton?

  A point charge of +Q is placed at the center .dmvy s3ze7gj fn-f ),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, idenye f z.m,3gjnvf-ds)7tical 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 ce /h)l.rz mk d/jo*i;fbntroid 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 placbid*hkm./l )z; r/ ojfed at one of the other vertices?

  Which of the following is not 3s- *j8hqu)0kg a jdtha vector?

  At twice the distance from a point charge, the strength of thi 0m r i0hc4xw,0jsux-e electric field

  Is it possible to have a zero electric field value between9o5 sy kvy87 qvq0zq/w a negative and positive charge along the line v/s5oz yk7q98 vqq0ywjoining the two charges?

  Is it possible to have a zero electric field value between two poswri x75/y4b9zm q* dmcitive charges along the line joining the two chargermx5diz ym4b* wqc/79s?

  Electric field lines near psitive point charg( 7wiuevje,fy 3p./ nfes

  The electric field shor uzy)e2t6.j ewn

  Can electric field lines intersect in fr(c 94yiop*gkhr nil *2ee space?

  A solid block of metal in electrostatic equilibrium is placed in a4r v6g pw*)5wy eo0i y54utnhp uniform electric field. Give a statement concerning the ehvgw ewo5)4p46it pn50ry uy*lectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters:- ggbeb.r , 3ngcg.wx are each given the same charge, the electric fielgb wn-gbx3g,r.cg:e. d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t4wt8:krxg o.fable in a region where a uniform electric field is dirert.f:o8g 4xkw cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an z 3mni 94;lwuoelectric charge

  A positive point charge is enclosed zv/j gwbr phjq4*hoob:w- )71in a hollow metallic sphere that is grounded. As jhjg/b1z*o p4h w-:)oqwr7bv compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in,c tcdl9jj1x3 static equilibrium.

State Gauss's law.

  The charge carried by o3.shl f;m1gexs 6wqg x8cm 5;wne electron 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 +21 m5wl5dg,(k o//lb spcxr-ne.00 mC. How many more protons than electrons doebxrdl pns, /lco5e km51(g-/ws this piece of plastic have?

  What is the charge on 1 kij85ycw dot3l )sv:,ikm:p rvq y*mjc *e4(h1g of protons?

  An atomic nucleus has a charge s -lkp9i7iwo;b ,u4umof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separzlu*2rpsh lc*8i73xfated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrxhc8su2rlpil 7* fz*3ic force between them?

  A 1.0-C charge is 15 m from a second chargea ,g9) 9.gd6xgpy t,ra3-uuv a czw*fq, and the force between them is 1.0 N. What is the magnitude of the second charaggpvt cxaa9dz ,wyu. 3f-)qur 96g*,ge?

  Two 1.0-C charges have aw v77si+ w c+c2mxoq h,,jp;xf force between them of 1.0 N. How far apart are they?

  The force between a j1w+yti0wckx-z3l)8x cd :f k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm f shrxe-js2+ tjdw -83apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between themeds82hxr jjft3 w s+--?

  Three identical point charges of 2.0 mC are placed on the x-axhfdi)6 sm4*hna pf816p4a fvl is. 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.64i hf*fs )famvd p68an4p1h l What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges 6pzay: p:4h nhare placed on the 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 magni4ah6hzpn : y:ptude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = htz) :yube) p/1.00 m; Q2 = 3.00 mC: )/u) bpzehty at x = 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 +Q is placed at the center of a squq37a,75 7rlakdqn xc zare, and a second point charge of -Q is placed at the upper-left corner. It is observed that 7ldxaan3 q7kq 75rc, zan 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 m99h0 l3+ q5ikhhvipcg, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n hq cil99pg3ivh+5h k0et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0rttes * ) veebm6m1-:j nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0r*me b-e)v1em 6:tjst nC charge?

  Three identical charges of 3.0 mC are placed at5-v2:,tghganeao))yzgj2xj8 u 7 p no the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ele, z7j 2ago-g8e:pgnhy utx2a nj5o) )vctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what po-pltb 9a )7ncoint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would bel9tab-n) ocp7 zero?

  A +3.0-C charge is at the origin a0ohgx arbc)- ( s;0jtvnd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the netsa (;tx v0h-b)o0rj cg force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x shheo5: b1k)2a y(u xo= 2a. Where can a third positive charge +q be placed so that the force on it hbouo2 x1s(:)yhe 5akis zero?

  A copper penny has a mass of 3. 7gsrg bd)0evpa udvu ly8*,-10 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 against the force of gravity by the avw5ce/ r bsn-;(*u jszgi qn,/ttraction of a fixed proton some distance above it. How far above ss-unqe j cr ;b*5zgi/v /w,(nthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc9zmkamvg n:+:j/vk g/d;kd 1sting threads which are 30 cm long. Both are gijd gv vdkm sgk/m /:n+;19:zakven identical 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 ofn-4 m-j8lzwi7ldwl n- +40e. What is the magnitude of the electric fnlz -w7w8ld 4-i-nljmield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1/qpeu nfowo( i+7,vp 4.50 m from a 50.0-nC cha einv+w(fqo4 p,7u o/prge?

  A 5.0-C charge is 10 m from a small test charge. Whcm4x.-e/5a ,pta*bp klv0k**tt np i jat is the magnitude of the electric field at the location of the test cha-p bavt m.pa5*ijnxl *ce* ,0p/tkt4 krge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of y i9zpa8 3/y e, eqtkk6vfh4k4f40onnn* fcm4 the ele/, cfk6ek 4ye *n44 a0i9hknv yfnfq38opz4mtctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the may zut* 225uki 0u *ubt-ko.szcgnitude of the force experienced by a 1.0 nC charge placed at the locatio2k0 tub iu. y2kt*z-uc5sz*uon of the test charge?

  Two point charges each ha ,ljxkby m8-a 9de4lg6ve 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 charges,- j ay8k6xl9lm dgbe4?

  A 5.0-mC charge is placed at thrgx nlv v9rky; ,m5;) sa5gvv.e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the ,. r;nvv mlgx )vk5rg vs;a5y9electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mivzdhqf sq5q,-t /);nark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electris5,q q fnqzv td;/)hi-c field zero?

  Two point charges of +3.0 mC and -7.0 pib+i7qn5swuvma qxrp .y70 -;or. - dmC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwqrr-+.mqs ua i 7-0vpw7.do5;nyip xbay between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l1f0pbxa . 0gb62xh0h qsn pvupmo1)-last corner is occupied by a -3.0 mC charge. Find the electric field at the center of10. pxv uo-0h qhsx120gnpalf 6m)pbb the square.

  Consider a square which is 1.0 m on a side. Cn.zl qm3 v/ d*wl*p8vjy.r3sc e p+ sov/5-tmcharges are placed at the corners of the square as follows: +4.0 mC at (0, 0ldvcpmync8 sevrjp. v l-3t //*m+w. 3zos*q5); +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 a charge of 5.0 mC when it is placed in a uniform elo6fy8 2zxn *egectric field. What is*8on2 ezf g6xy the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of u)ub2dn(v,(,zkfclr$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of j u(5y k mlcw,vhc9g:-mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on thc,:vm ck(j uh9 gwl-y5e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pfim/ r 8pdz-sb s)07xxlaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direxd/7x mf si)s0-8pbzr ction of the electric field?

  A metal sphere of radius 10 cm carries a charge z xe:4m yo(goz:ln6v+ of +2.0 mC. What is the magnitude46loon(z :mv + zex:yg of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 vz.w7:z4fmx0n oyo*y cm carries a charge of 3.0 mC. What is the electric field 6.yzf4om:.* zwo 0nvxy70 cm from the center of the sphere?