State the law of conservation of elect3 0g5tr8zw r/7qf yfzcric charge.

  Is it possible for two negative charges to attract each 5bd3a9mork ev2 8uuz*other?

  Is it possible for a positive and aia;1 1px83w8nrxzxck negative charge to attract each other?

  A glass rod is rubbed with a lj31yn 1as7cd* ql+z upiece of silk. During the process the glass rod acquires a positive charge and the sil y*sda117+ujq3 cln zlk

  A proton carries a

  The model of the atom sho-s5g ij; p3czpws a

  A neutral atom always hadtqoea w66 ti uxsf;dxqvv9 (5d)) 1e/s

  An atom has more electrons than pronr 4qxew s1g/8tons. The atom is

  Materials in which the electrons ara: .h qy2ki n,(rz 9mh+-ileyfe bound very tightly to the nuclei are referr.inq-he z r 9,(:mih2 alfyky+ed to as

  Materials in which the electrons are bodf(i33 uw3lnqund very loosely to the nuclei and can move about freelqluf3 iwdn (33y within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metnclb *.*x7 2ac*bausuf9tl oir xota10/ge )2al bar. The end ofb0st*/ a2ua 7 cn1gea .i* oul2xltx)c9fr bo* the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neu puhl k/6wb+g2u3j u m5wcz5-otral. They are placed near each other on an insulated table. Sphere B is brief5+5 ub/gm3lw2 w-cpkjozuuh 6ly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop2+p fee.ngnccxvm *(dk y4s,qp4h1x ,e positively?

  An originally neutral electroscopekr.5t3unm, (.y)bapfg x3cw8tx0 uau is briefly touched with a positively charged glass ( ,xmyf5b3)wu c3tgr .aau.np k 8u0txrod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char r; 6gp3q snx*)sxfnb(ged glass rod is held near igqxxp b)*rs 3nn6;(s ft. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The734h- wg dl ic*g.zoqxn a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?d 7hw-gizco4lq *x3.g

  A large negatively charged object is b+ es4 u)hx.pfplaced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops hbpsf u+x).e4before 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 each ball?

  Charge is

  What are the units of the Coulomb constant bnb/sr9phy4 ,j 7*xh h$k$, which appears in Coulomb's law?

  Two charged objects are separatecsz/f)y;)hmrjvs 8q 9ll )y+l d by a distance d. The first charge is larger in magnitude than the second charg)/9m+ l qsy y;fr8vll cj)shz)e.

  Sphere A carries a net h8wipf0umq. . charge and sphere B is neutral. They are placed near each other on an insulated table0iwum8 .f pq.h. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ceg/j8i q htg o9e,m3/surtain force. If the charges on both obj tegu 9sj3gim/8/hq,oects are doubled with no change in separation, the force between them

  Two charges are separated by a distancejk 89u.ko kcmckej s4+ (dkz.*yl1r0ev (9ywz d and exert mutual attractive forces of F on each other. If the ( 8.yjoy(+zc k z04dl*kmcw s1kk j.kur9ev9echarges 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 the ford:0/jj6 sf stjbb:+k(ejvz nfpn;//mce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced t fkej/ ;jn:0j6+:bpfsb( sz m/j vnd/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 vp/b3, wrhr 5vrf atn67zrw3;m. What happens to the magnitude of the force on th7zp/r5v,wratnrbv3 ;f hr3 6w e proton if a second electron is placed next to the first electron?

  An electron and a proton are sea:f; l+t* +q hlmog-qz9vmac7parated by a distance of 1.0 m. What happens to the magnitude of the force on the firsoq hml +lmv a faq+-;:zcg9*t7t electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of f i*c 1r-n2g7-brc ul-y:ydpy1.0 m. What happens to the size of the force on the proton *u:p d-rny-cglfy1- ri27 ybcif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wzive,.0(ny2ie c1 ds ghen a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic forccy0ie2dgs1ve.n iz, ( e 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 equilateral triangle. kmimd0- ;,hiy/vbx+tdxwidv( 3g 90y 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 fiy,xy3gbm(d-d dx+k 0whi;/ 9itvv m0orce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin--mgys ff -(mcvr+v(z g is not a vector?

  At twice the distance from a point charge, the sto xghvj6fxn 0o/r3110hk dgr8 rength of the electric field

  Is it possible to have a zed1b v3j1 edf4g4p3punz 9:kiv ro electric field value between a negative and positive charge along the linbjekd v3pg4i d pf3 9uv1zn1:4e joining the two charges?

  Is it possible to have a zero electric field value b 2viw2;uz8eitzv f3 y1 21znzwetween two positive charges aloi13w 8z2y vti21f z2; vzewunzng the line joining the two charges?

  Electric field lines near psitive point chargeho(1subf0bt / h (wkm;s

  The electric field showr,1u/xr9q/ nbxto2m6p5m rl- mbpw-o n

  Can electric field lines intersect in free space o1mp()-rvo*c i*;ru0 wzmc sh?

  A solid block of metal in electrostat3ulfrljn2 1xl+7 k,rkic equilibrium is placed in a uniform electric field. Gi l3,7rlf2 1l xjk+ruknve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacgcirfpjr6/ r5m0i s44h given the sa4rimg 6scijpf54 r/ r0me charge, 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 unuh o,: q(w,y3j. hhyfiiform electric field is directed straight upwiqf :.y (yhh3,h w,ojuard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neav* vmosb1(dkx:1lb i8 x8sjsb gd0 3 noq7tv49r an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is rdwqn6 65- d)js7vy2yi w+ey2 vly3f ngrounded. As compared to the case without the hollow sphere, the electric field at a vqedlsynrin6d56 f ww)2y yjv27+y3- point directly above the hollow sphere has

State three properties of conductors in static equo5yel08q s 5u2 hb2cap6wop4vilibrium.

State Gauss's law.

  The charge carried by one z6tjquv.a*0emy d5 p k: 9vv+selectron 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 +2.00 mC. How many mhi9fhm:yhu*f , tz3t zgzz5. lq3hg6 7ore protons than electrons does this pi3:zgg, qi hhyuz6f39tz. m7 tf*h5hlzece of plastic have?

  What is the charge on 1 kg of pr(j9a d 1u-ehxbtvit u,gaazl4(e4-4h0 krdz4otons?

  An atomic nucleus has aj*wv2ky *ji +s 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 vasc0jktr :pk6hw 9wh)( lues of 2.0 and -4.0 mC, respectively. What is the magnh)t sk:r6hcw j(90pkw itude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargq4z4lcj4xp b o49 1ct0-uesg se, and the force between them is 1.0 N. What is the magnitude of the second charge?14jgu-x 49 qccse0lpsbz 4 o4t

  Two 1.0-C charges have a force between them of 1.0 N. How far apart0).y0 6 f a ur:ev .g4tk)oxph6mzeddc are they?

  The force between a vv721zdgae) e 3dy/xm $30 \; mC$ 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.c + jpk. j5w e7jiknl;oq3nn.jc0b1b1 If they are moved to a new separation of 8.0pnb ;w j0cc7nb1n.ijj 1l.e3qk+ o5jk cm, what is the electric force between them?

  Three identical point charges of 2.0 m.*q8qqdhw g w9y kgesfz +m 2qrx1*5,aC are placed on the x-axis. The first charge is at thdwq1zq 2e,swqh.y gqk r9*g85x+ m*fae 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 the x-axis. A charge ofx.w1+ c2;ji4 brzye5p y szu)h +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 dir.zi+1 p y;be)hc u5xyr 2zswj4ection of the electrostatic force which acts on the charge at the origin?

  Three point charges ezn9tw.b (,zf are located 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 = -1.00 m. What is the magnitude of the f9.bez( z,twnf orce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point c pbyqv/e3+u jmt0 x+p4harge of -Q is placed at the u3y+40u m qpe j/txbp+vpper-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,)rgad+b yj/av 6yb7 btf3r6 d( 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force oby6/7gfa6(bjy3ra v b+d tr )dn the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,nvo 6aqg ;f/huj6/fv3h xm+v/ 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dirn//uqmv/x 6ho hv 3;ffga+j6v ection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placby.ixe vpdf:1s/ h9c.ed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thefvcsix9 /: .bdp.hy1 e charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At sdzjg2/uz+ (cs4x mdg6n.im, what 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 i.d(z s2c+jm g snu ,6m4zd/gxit would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge i0 wt:ydlgk4+oax94gke1 +ests at x = 4.0 m. Where on the x-axis can a third cha4k4o+s1e dwx: t ltaeg+gy k90rge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. kxc *ng:h wo-9kv8i susl0 i*:Where can a third positive charge +q be placed so that the force onl ng8-*0 s:i kuh:kxvwio9*c s it is zero?

  A copper penny has a mass of 3.0 g g(m5ev+f -elo. 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 attraction of a fixmtzd,kb/-x sg0p)zj)ed proton some distance above it. How far above the electzm )tb,k x/0p)-szjdgron is the proton?

  Two 0.20-g metal spheres are hung from a f6r(h,zdr*r r)xkvm2common point by nonconducting threads which are 30 cm long. Both are given identical c(*krr 6mfxvh) r,2dzrharges, 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. Whav2y*m 2jhmn6ni9 w:aft is the magnitude of the electric field at a distann6yfim2*j v2:hw m9ance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.508gb7 tpv vtliv :xwriy +c2:/3 m f7ir3tyt2:+vv p:/l xcg vb8iwrom a 50.0-nC charge?

  A 5.0-C charge is 10*vf 0buk+eg,b0 ser7cdh)ib1 m from a small test charge. What is the magnitude of the electric 7e1h0,b)*be+cdv0 kufsb irgfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small tdozu; io3p2frhs6h- y50g) n lest charge. What is the direction of the electric fierhuo3)h0i f-lzos g6pnd; 25y ld?

  A 5.0-C charge is 10 mz,6dsxx,o03:e jxe xnyq ba02 ma2g x( from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cqj yeg ,dm2b 3xxx e0,a620a: zsxxo(nharge?

  Two point charges each have a value of 3.0 C and are seyxxu b:8+pm-afjwf5 2 parated by a distance of 4.0 m. Wa y+xfp mfjb:8 -wu25xhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is pldjs46q9t /ooc aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thej4ts d/69o coq 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter2fjb ar7+ta qsp4qf:k o8.(qw csq6 cn4z-y6j stick and a -4.0 mC charge is placed at wocsqr+(-j2qq4: aa f87p 6scq4.n bzj tfyk 6the 50 cm mark. At what point on a 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 = 0.20fv5 c:/w wpugyem+ /;f+ hr2no m. What is the magnitude of the electrew+fr :/yf+c/mhn g uo5;2vpwic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sq*e2tof2*,hb;zq0n+o3i mlno ph: vle uare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente0p to*nef3iol*,+zv he22mn o:l;q hb r of the square.

  Consider a square which is a6zce9wuh8 ;2 li,vbfrr1v-c1.0 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); +3.0f;hlui92- zarcc6bwv, e8r v1 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 pla+1pf3msuf4+ rnu tr -g*p uy:iced in a uniform electric field. What is tpt u+r1u3m+g*npif4rus : yf- he magnitude of this electric field?

  A particle with a charge of 4.0 mC ezxkaq2o6bo: 61a4zb 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 electric fielz:r:-tiiw/(k:g vxcyc2x.u* g n;wbj d of 6000 N/C pointing downward. What charge must be placed on the g cgik(x.*;jxr:w c-tb zuwi :nv/y:2 ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isvarrla -hj,x0crt6 .cyp pa: 8e)p* ,v placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric rcyv)rh* ejp0pv,ca8a6,axt:p.l-r field?

  A metal sphere of radius 10 cm carries a charge of.k n m,ywo7nhg2t 9-ze +2.0 mC. What is the magnitude of the electric f,t. khn 2z-9wyo7eg mnield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries m; h*9ldjqvxw y5:fm fi*o)w5w.nwy1 a charge of 3.0 mC. What is the electric field 6.v1j *5)x* 5mwwfm : dyho;w9 w.liynqf0 cm from the center of the sphere?