State the law of conservation of ele 0xfs4brh4b g;ypy2wpa tr /;(apmr)* ctric charge.

  Is it possible for two negative charges to attract ednua-:s beh ( aucc8 z9to520-5h5nuwbkx nm /ach other?

  Is it possible for a positive and a negy)rr spk,o1 g4gb e+0mative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glas)uue/w74v vyur3x ;mms rod acquires a positiv7wr4vymxv m/;uuu )3e e charge and the silk

  A proton carries a

  The model of the atom shoefdsy4 0h2ud. ws a

  A neutral atom always has;z7zg p.m)jrh.j -i9o6 ;ip k jnnby(v

  An atom has more electrons than protons. Thqof 3ym1 x.;udehn(eg3ez: q 8e atom is

  Materials in which the electrons are bou3 ,0mkkplnu g8nd very tightly to the nuclei are referred to asu 8km0k g,pnl3

  Materials in which the electrons are bound very loosely to t ggqbm;kd7t,ih gt3t m6wo*s+ 0jg, y1he nuclei and can move about freely within the material are referred t7 o,,t bjt01kgs3g+ mg gqyihw*d;mt6o as

  A negatively charged rod is brought near one end of an uncharged metal bar.:h+nq4qwghrs 4s3mfudh 8h9 zlf7(j ( The end of the metal bar farthest from the charged rod will be charn hjr9h8wuh mfqzhq ( g:f+3l4s4s(7 dged

  Sphere A carries a net positive *ndd:ubn+csrew1 ,,ocharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brwnb rdeuo,,*1cs+nd :iefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively psfao +d;0p7+rh5okccharged rod charge an electroscope positively?

  An originally neutral electroscope is gr *0nus*a a3oo9p 6lpbriefly touched with a positively charged glass rod. The electrol g0pao36r9npuo **sa scope

  An originally neutral electroscope is grounded briefly while a positively c r,i5 pewt0+9ik o6igoharged glass rod is held near it. After the glass rod is rg+i i9 06irtpeoko,5 wemoved, the electroscope

  A positive object touches a neutral electroscope, ad37jcv gc-o9.6htij m nd the leaves separate. Then a negative object ijcdm g .9 3jto6-i7vhcs brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chaltm.j/fg /e )eu oka v5x92)+ipj kd+irged object is 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 forwar 95+ +ifvlp)u.ge eki/ajjtox/ 2dm) kd, 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 of toj if v 6bj49n sgh(tke+41z4rhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated byei 7:-ycn;b5+lc cvxn a distance d. The first charge is larger in magnitude than txyclvcieb ; nc+-75n: he second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea;c01ugtql:bo, -os(f ct :clr r each other on an insulated table. Which statement best desgrtcfcl 0,obo (-st:1 ;ucql: cribes the electrostatic force between them?

  Two charged objects attract each other with a certain force.v0i-n 5jbn 4vc If the charges on -n5nv40ic jv bboth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d a2zu-l warvb4 5nd exert mutual attractive forces of F o4-r5vz u bl2wan each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wit/vyiqy (r9dz,,jnt rj8 ;ta8dh a force F. What happens to the force between them if one charge is doubled, the y;tvnr8d ,qy(rj dji 8,/ta9zother charge 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 b b.:;-u0vfk s.krt 4zshj-d may a distance of 1.0 m. What happens to the magnitude of the force on the 0 4b; askfm uk: .-h-rzd.svjtproton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance2eu s6o1ufd0yjv p43l of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?oj l uv6d41p0 e2fs3yu

  An electron and a protfm wywy966w )hon are separated by a distance of 1.0 m. What happens to the size of the for)fy69w w wmh6yce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pqm+)l*x /j bq;ad( ouboint 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 the square. What is the magnitude of the net electrostatic force acting on the positive charge at the centerlxdu+*a ;() qmjb bo/q of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. :x odpfixyta z s)nd+(/.0s0aWhen a second charge of +Q is placed at ons:yfd0 z+.sp/xo n)atx 0 (iade 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 one of the other vertices?

  Which of the following is not a v+.qqo3 yjrnf, ector?

  At twice the distance from a point charge, the strength of the electri7imr1(9 :x.ufwlsxj9 heywz2c field

  Is it possible to have a zero electric field va+b;(+ dfzc 2klm)vlye lue between a negative and positive charge alyd ;cbv2+e ) kllf+(zmong the line joining the two charges?

  Is it possible to have a zero electric field value vlx35 zrl3be 3between two positive charges along the line joi3x3 5ebvl rlz3ning the two charges?

  Electric field lines near psitive poin;c:lcwjbh4y t t.(an4)u ha9dt charges

  The electric field showg hljdb:bo;u se5wyd/ f0a3x+g .nn5.(x3zbe n

  Can electric field linejge59e8)b zvndjc-5e 1r 5md hs intersect in free space?

  A solid block of metal in elect*e5 qufyhf;i /.q8eqqrostatic equilibrium is placed in a uniform electric field. q ;u/e5fq 8hy*.qfqei Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet9god;t6)xud v ers are each given the same charge, the electric field vx6d9 tdg);ou(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regi 2)vo2/ /nzeqytwe3 fl,p/tmnon where a uniform electric field is directed straight upward. What can be said concerning the charge on the blo/,nnz2evym wf/tt e3l)/qp2 ock's top surface?

  If a conductor is in electrostatic equilibriu11fm frc j5jza(h2)zyta5 k 4qm near an electric charge

  A positive point charge is e)usajk/dtx3p : ;wgpwu 6c,) pnclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above , wx:p 3pu)wgj)c6 kp adtu/s;the hollow sphere has

State three properties of conductors in s d; uk18cb;6qd+xf u* f2ygyuwtatic equilibrium.

State Gauss's law.

  The charge carried by one electron is,x5qarr*76 mm7fjz u xw h2j0u $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has of0 -k9q noh 2wmjij,)a net charge of +2.00 mC. How many more protons than electrons does this piece of 2in mfkjoh0owq-j)9,plastic have?

  What is the charge on 1 kg ofyxd ;+ wsec k-voqa; dj6ek5,(4akr 7k protons?

  An atomic nucleus has wdwf7 rljz:/in9l9(e 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 chacavqv ;h2l9abfduve. 62e 8;vrge values of 2.0 and -4.0 mC, respectively. What is the magnitf8ahvac vvqd.u l96;;e ebv22ude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, a9w4j y-.gr*f-m u4w6z xyh9v4rdqdjcnd the force between them is 1.0 N. Whj9u4wr x4v6 qr-cym dy*j.wdg4h-zf 9at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0y sjbiyokx55:1 qspk 9dvg, 9- N. How far apart are they?

  The force between a ::bym+ r 9dsxb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ld.jbv *1;k-bz4iioxtwtew.n5h2 9 g apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what itkjeolnb.b1z dt-* 4vh.x wiiw2;95gs the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chag 1/e yopiv:uxev6d5w;z 3o0xrge 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 cp6e5x;vvxi y/d3o gw z:o1e0uharge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at a +;ozc8(uj4 u6xj z5tosl vi2the origin, -2.0 m C to the r2tu;o+ u j zxs84a oj(5civl6zight at x = 50 cm, and +4.0 mC 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 located at the followi fk,d+qj bz;cf,je1e/ ng positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC atdcq/zebkf1fj ,; +e, j x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q ic4z xwk2(2uuas placed at the center of a square, 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 ma 2uckzx42 uaw(gnitude 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 (0.3eswt xuw eh19 :j61)dq0 m, 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 net force on the wsq191 j6ew:ehdu) xt 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qnvzbfyg bjb6x62b .h) 9w(yb 13 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 n (b jg6 y 1zbn9)b6yh2vw.bfbxC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqc zr/q.:. rglzuilateral triangle which measures 30 cm on a side. What i.qzc.grr z: /ls the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargvd1wpc ,;a in (wo/h1ues of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge ovc1hi,npua/d (w ; 1wof -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 eyqr9uh6 i82c on the x-axis can a third charge i2e u 8chy9q6rbe placed so the net force on it is zero?

  Charge +2q is placed at the origin and sz*hy2i+iv q(gz lly7p(.5c y charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fol(l5pyz *qhiicv.2gsy+ (z7yrce on it is zero?

  A copper penny has a mass dvg 9t-*ncbe6 m:t9llw g o*gkz70uz0 of 3.0 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 :p1 p9 ,.vfox1f 7ud sjkhin0pof gravity by the attraction of a fixed proton some distance above it. How far above the electron isphdk f 0p19o suv:p,f7j n.i1x the proton?

  Two 0.20-g metal sphy8o9k r+g:2rqb6bsj;n bzu ( heres are hung from a common point by nonconducting threads which are 30 cm long. Both are8o rsbkz :+gru6bn;jyh9bq (2 given 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 of +40e. What is tq6+.v q7dl91p vlfganhe magnitude of the electric field at a distance o6p19+dg qv.nvaf 7lq lf 1.0 m from the nucleus?

  What are the magnitude and dirfi 3mqsl9hb; ,f (z:f ,rsx9yoection of the electric field at a distance of 1.50 mmi fz; bf9hs3f ly: (sqox,9,r from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o;(de: (q erkdpf the electric field at the location of the test c(;: ed dpq(kerharge?

  A 5.0-C charge is 10 m from a small *c iwv6tymbfzny.3 1. lqburk;4/h x; test charge. What is the direction of the elect vh4rbmw.1bly xy;/i ;q.zc3tnf k6*uric field?

  A 5.0-C charge is 10 m from a small test charge. What is thea2kgg+ (uh rumz 6j96.+u eqta magnitude of the force experienced by a 1.0 9+rgtm2 qjhueuk.g+a6 6a(u znC charge placed at the location of the test charge?

  Two point charges each have a value ohocg-/- dv9 yuf 3.0 C and are separated by a distance of 4.0 m. What is vcuo/- ygdh-9the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a 13 bn6+ arhsy u+nww7mic *1krmeter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the e7 i* m+c1rnww a3b+nhy16sur klectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andvmct (e a,g+:n a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges ivag:(, m+etn cs the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed )js0u bw*gia:8ffm: qq,b ep3at x = 0 and x = 0.20 m. What is the magnitude of the electric jfqp )i eu baqw,8mf*gb:s3:0 field at the point midway between them?

  Three 3.0 mC charges 2j7-ky medbzk6r82*pam oj*i are 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 ata my26jj*dm* pbek ki-r o782z the center of the square.

  Consider a square which is 1.0 m on a side. Ch.,x hifx-ca.;j(at oqarges 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 x.xa(iq ;c h otf.-aj,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 uwzbqwvcqw9vu.w :8r x* z7 2(lniform electric field. What is the magnitudvu (qw.w8l*2zwr z9 cb :7xwqve of this electric field?

  A particle with a charge of 4.0 mC has a mast 5suva(y/b lh0s6y: qs 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 electric fi cj5 fv wf10m9fm or8qa;ka+n/eld of 6000 N/C pointing downward. What charg/q+ acfn afvmo1095 r 8fjwkm;e must be 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 ball is plawsvr6 (3 k99 c)zsm1p.jbya dxced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction6 dbs c pksm jr9axvz3y(1).9w of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wh1p 72 k fe)fcf-)y sk3uj k+r5wvkcni8at is the magnitude of the electric field 5.0 cm fromcnp)5 v wy +8euif-k kc1ksf72rf)k3 j the sphere's surface?

  A metal sphere of radius 2.0 cm carries4nzdesfm7x.ygblf mf f+3-u;q9 2+cg a charge of 3.0 mC. What is the electric field 6.0 cm from the center of tx gu +s+4dc27f.qmmnb-lff3y9zf; e g he sphere?