State the law of conservation of electric charghne9/uq61kk:-jz xx z bz61o pe.

  Is it possible for two negative charges to ljlli;yxg:7 am5) ta3attract each other?

  Is it possible for a posit+ nap2)m8fh xwive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk .v5z p3lq3exxt3y aw:. During the process the glass rod acqu :3leav .x3t3qzw5xy pires a positive charge and the silk

  A proton carries a

  The model of the atom uis7cqf,7n1g shows a

  A neutral atom alwayk; 4t 9x84chbe3 gowhys has

  An atom has more electrons than protons. The ato5cmk7krjs-+zj(t : hd m is

  Materials in which the electrons are bound very tightly to the nuclei arqtm2;ag ,v 6n5tvwf(yizl g33 e referredqi 3tgv2nw;3z5yvt,(g fma6l to as

  Materials in which the electrons are bound very loosely to the nucleijy a2 49 m*- *3frf-bci-p8caqhn pfhx and can move about freely within the material archai-- caf94frxn3 y*qj fh-* b 8pm2pe referred to as

  A negatively charged rod is brought near one end of an uncha 7-o:vs8ut . j,,huwd2mml fzhrged metal bar. The end of the metal bar farthest frlu ut7:m z8vsod,wm-2 ,fjh.h om the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra z(s(jieyj47wrzj 0y+ l. They are placed near each other on an insulatrs jj7wyi(z40z (y e+jed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charga)mueoou ,r)n5(vy+v (p(3q s.r ,4cvwlklfse an electroscope positively?

  An originally neutral electroscope is briefly touched wit9mja.pw; 40z tn1inkgh a positively charged jnn4z.p ti 0awm9gk;1glass rod. The electroscope

  An originally neutral electroscope is grounded brie6aw0-8a 6l ov/u5pmnbj p g2lqfly while a positively charged glass rod is held near it. 2jp5 /pl-g8am0 aqvl6bw6oun After the glass rod is removed, the electroscope

  A positive object touches a neuhd2)ce)o w 7ds mar(,atral electroscope, and the leaves separate. Then a negative object is brought nearea2a( dms)hco )drw7, the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on apwd8z*;zz n -zn 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 zzz8np*d -;zwtouch 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 Co-k+ 52ptu lc53j:sefq *kv wioulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerxt5/xwhi3l7i )il 3l d in magnitude than the second chard7 wtill )/xx3 hi5l3ige.

  Sphere A carries a net chanhy/xa z.-bf8pyf/ i2rge and sphere B is neutral. They are placed near each other on an insulated table. Which sf.x h2i-p z8bnf/ y/aytatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. 56mk0o;2cr s xujh d)eIf the charges on both objects are doubu);50mjk s2 xdc ehor6led with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractibirfeo ;ktbv-s ;.fox)r(2t (ve forces of F on each other. vt r)s .bri2fx f;e( -(otbok;If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othue g)mrg -/vddxi9tq)gfp5:3er with a force F. What happens to the force between them if one charge is doubled, the other charge is tripltgg-xr: d u mgv9))q fd5p/ie3ed, 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 disao 66xg+ zu.il;ady9o tance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the faguyi9.lx+; 6 d6oazoirst electron?

  An electron and a proton are separated bu 47 l4yzm9rjdy a distance of 1.0 m. What happens to the magnitude of the force on the first um 4ly7j9 rz4delectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happx:qt/) jhblf4ens to the size of the force on the proton if the electro4h/f) jqx: tbln is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t*z zp-iwdg371w6rss/;zn bjb he center of a square. When a second point charge of -Q is placed at one of thesb;1b 76*i 3zz/ gdwspjr-n wz 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 equilatedk l,w(z t0c:hral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force ofcdz (hw l0:tk, 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 one of the other vertices?

  Which of the following is not a ved0uk(ou m7v:v0k q9h pctor?

  At twice the distancec s+b7odgq, m10q5fvtm2;d fs from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value beina2 q6ipg)mh-n-m: p.pg 10ii * rxfjtween a negative and positive charge along the line joining ti )p 61agqr pig0n.mmip2-fin -h*xj:he two charges?

  Is it possible to have a zer2jhk .5yfmz;s e /o-sto electric field value between two positive charges along the line joining the two chhsmt - of.js2yke z5;/arges?

  Electric field lines near psitive point charges4rbka:bf)l rpm2 xk.-

  The electric field shown +,bh9wmmr7 eq- -c prr

  Can electric field lines intersect in free spacedb5p p50yyx6gl.oq+o g8 fwx)bm jo) 7?

  A solid block of metal in electrostatic equin9.6ir 9 +ccok +rjcl3zhhas98fh zx.librium is placed in a uniform electric field. Give a statement concerning the electric field in the blorcl 98+ih h6zxr.kcz9j9ao c 3sh.+fn ck's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are pd9oqzx7w 3o6ty: x +xeach given the same charge:wxdzox 9+67xp3qyto , 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 a uniform 4).-k/: kr kruajp 5h-xzjier 8xcm0selectric field is directed straight upward. What can be said concerning the charge on the bl - hz jjaxki c5ekr)mk-x/pru4sr:8.0ock's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargen r0opf/0apu,l a*ha0

  A positive point charge ipu+ihc.x9l.:h tv fq9 s enclosed in a hollow metallic sphere that is grounded. As comphvciu+fx9h q9p.l:. tared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condudp/z4s 86rxxbctors in static equilibrium.

State Gauss's law.

  The charge carried by onea)6 3mg*r. iznu7 c1ok9 jbvts 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 ch7k143a y nuke2(oo bjtc *wy5parge of +2.00 mC. How many more protons than electrons does thic5ea2jnykpo k*u 34( bw ty1o7s piece of plastic have?

  What is the charge onvc c; ysgq,e4) 1 kg of protons?

  An atomic nucleus has a ch;/53 ovyt 6eam sy5ikyarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated ba)lanhkxed8ftg e(jf( q -h;4o / 79ehy 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magh-a qxft a8f;(( ghke l94/ h)nedj7eonitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the ;ovs*cbn .s6f force between them is 1.0 N. What is the magnitude of the second charg* vcbs 6fn.o;se?

  Two 1.0-C charges have a force between them of 1.0 N8( a01 hwg(7wvknfq ud. How far apart are they?

  The force between a x gu 3pyi8rl1o/phz :yqm3yu xfab31k07 r/4u $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm av sl661;xhb, dh.;9yzyaq s*lscpen*- s*kw spart, experience a 1.0-N force. If they are moved to a new separation of 8.0 zhhps;askn*v 1sy*sqldes-,.6; 9 x*wlyb 6ccm, what is the electric force between them?

  Three identical point charges of 2.0 mCh-4.fqvo bp4,ighhforjb;v ,bqq8(c1. b d w 2 are placed on the x-axis. 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. What are the magnitude and direction of the electrostatic force which acts on the charge at tovhqp,i8ff;h (gb4boqdvw -,q14b 2 r c b.jh.he origin?

  Three point charges are placed on the x-axis. A: /xsf3on9zh z 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 elz/o:s3h9fn xzectrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =9sdrn)m4l*)i(s2 2gs p eyi+wuw)ejn 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x)ue swin*d4)2i9)w s( mlpg+ 2sr jeny = -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 centerbf:5l)rhlf; wn 4(biyx aen0 8 of a square, and a second point charge of -Q is placed at the upfhybinbewrf 8:l4n0l;a 5)(xper-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 (0, 0.10 m); Q3 = 5 7wm b uh4p5 ,gtpt(a7n(f0nnv.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargmv477nnpuwh5 f ,(0(bttpa nge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nsfhv:fzu2t q7 *uhqa-6r/ dp; C is at (0, 0). What s d/u6tha rh72p vu;f*qqfz-: is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thxo dc.z;i/9u .( sm2xpm3oicke vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude 3../2s(;odium kxpcixmcz9 o of the electrostatic 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., eik :v*q 2p:e/ fp tkhvi;(nadl2zo point, 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 wouldp2v,nk e *2:: ealv( q.i;p k/thfizdo be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =n1i)) u sffd z3:sey0i 4.0 m. Where on the x-axis can a third charge be placed so t3s1efu) f0izdn:ysi) he net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placeuq. al8* , r (ro(g;lpcauys.bd at x = 2a. Where can a third positive chaar;r alc(y*uo,sb q (.u.8p lgrge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t23 u.*bebxzu8nkq) 4 /sop sciotal 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 gra, 6s -u;evusdvvity by the attraction of a fixed proton some distance above it. u,6vu s-;vsd eHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingx1r fha51oo*k u:nmmyz4(g/o threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion o on*oafk4 um(gm/ xy5hrz1:1forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has gms 3,,kanike6/1 zmx a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m froxgm z/ke3,,mk 6nais1m the nucleus?

  What are the magnitude and direction of tc ,j538e: x5tz(atkoksqa; ashe electric field at a distance of 1.50 m from azt(k ;5c,so8skeaqjxat35 : a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thw d2n 6ob68accekhvid6cg e 2 z(,bw::e electric field at the location of the test charge?b86(c2awne2zbi:o6 ged 6 dccwkh ,:v

  A 5.0-C charge is 10 m from a small test charge. What --+npz m.lbqm is the direction of the electric fi.lmm-b-znp q+ eld?

  A 5.0-C charge is 10 m from a small test charge. Whatdv if2qkp/v.1 is the magnitude of the force experienced by a 1.0 nC charge placed at the loc2fpvk i1.v q/dation of the test charge?

  Two point charges each have a vana86r5 ,ngfz4no2 m ya(ra dm.lue 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 cha(mam fn,gnd582.aa 6rzyno r4 rges?

  A 5.0-mC charge is plajfhvf2-1y rl+ pz 2fmg+8g ;zkced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What iv mfk+-fgg;lh1pzzf2+jry28s 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 -yl ; p1w1t bck;g1a1alzeg /+c4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the tcagkby1a;l g +c1pew/ 1lz;t1wo charges is the electric field zero?

  Two point charges of +3.+nv9h0b:+1rpz idqk k 0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?ikhqn9k pbdv :+1z0+r

  Three 3.0 mC charges are at the three corners xicp/pf8u7xv/ w ,nl/ of a square of side 0.50 m. The last corner is occupied by a -wiu7 xxvp/ fpc8/nl, /3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0ezn.whq).x *g m on a side. 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.xez .qg) hwn*, 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 e;6p8o6j0 +0rxru k o)1y jkjj gc8pht5.0 mC when it is placed in a uniform electric field. What isjo;86tc0+r ep6rx gjy 10kuopjj k8)h the magnitude of this electric field?

  A particle with a charge ob,*, o9bg,w lzi cn2xvf 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 an electrib1 c7icwijw*:n beez-hp8 5f1c field of 6000 N/C pointing downwar8:*i1jicebcwef h-bpw15 z 7nd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a char:m4ehgw :x p6xvot4c+ge of -2.00 nC. The ball is placed inside a uni+g4 wt e4:vhomcxx 6p:form electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm ca0:ibd)9 x -2 pvtjgpirshtu1/rries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thex pisj ig) h- t0/2:t9rpuvdb1 sphere's surface?

  A metal sphere of radius 2;2zb -md j v5c528c*ncxkjaic.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from tv c2mx 55*ji2ckcza ncd8-;jb he center of the sphere?